diff options
author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/clk/ux500 | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski:
"Core:
- Add dedicated kmem_cache for typical/small skb->head, avoid having
to access struct page at kfree time, and improve memory use.
- Introduce sysctl to set default RPS configuration for new netdevs.
- Define Netlink protocol specification format which can be used to
describe messages used by each family and auto-generate parsers.
Add tools for generating kernel data structures and uAPI headers.
- Expose all net/core sysctls inside netns.
- Remove 4s sleep in netpoll if carrier is instantly detected on
boot.
- Add configurable limit of MDB entries per port, and port-vlan.
- Continue populating drop reasons throughout the stack.
- Retire a handful of legacy Qdiscs and classifiers.
Protocols:
- Support IPv4 big TCP (TSO frames larger than 64kB).
- Add IP_LOCAL_PORT_RANGE socket option, to control local port range
on socket by socket basis.
- Track and report in procfs number of MPTCP sockets used.
- Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
manager.
- IPv6: don't check net.ipv6.route.max_size and rely on garbage
collection to free memory (similarly to IPv4).
- Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).
- ICMP: add per-rate limit counters.
- Add support for user scanning requests in ieee802154.
- Remove static WEP support.
- Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
reporting.
- WiFi 7 EHT channel puncturing support (client & AP).
BPF:
- Add a rbtree data structure following the "next-gen data structure"
precedent set by recently added linked list, that is, by using
kfunc + kptr instead of adding a new BPF map type.
- Expose XDP hints via kfuncs with initial support for RX hash and
timestamp metadata.
- Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
better support decap on GRE tunnel devices not operating in collect
metadata.
- Improve x86 JIT's codegen for PROBE_MEM runtime error checks.
- Remove the need for trace_printk_lock for bpf_trace_printk and
bpf_trace_vprintk helpers.
- Extend libbpf's bpf_tracing.h support for tracing arguments of
kprobes/uprobes and syscall as a special case.
- Significantly reduce the search time for module symbols by
livepatch and BPF.
- Enable cpumasks to be used as kptrs, which is useful for tracing
programs tracking which tasks end up running on which CPUs in
different time intervals.
- Add support for BPF trampoline on s390x and riscv64.
- Add capability to export the XDP features supported by the NIC.
- Add __bpf_kfunc tag for marking kernel functions as kfuncs.
- Add cgroup.memory=nobpf kernel parameter option to disable BPF
memory accounting for container environments.
Netfilter:
- Remove the CLUSTERIP target. It has been marked as obsolete for
years, and we still have WARN splats wrt races of the out-of-band
/proc interface installed by this target.
- Add 'destroy' commands to nf_tables. They are identical to the
existing 'delete' commands, but do not return an error if the
referenced object (set, chain, rule...) did not exist.
Driver API:
- Improve cpumask_local_spread() locality to help NICs set the right
IRQ affinity on AMD platforms.
- Separate C22 and C45 MDIO bus transactions more clearly.
- Introduce new DCB table to control DSCP rewrite on egress.
- Support configuration of Physical Layer Collision Avoidance (PLCA)
Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
shared medium Ethernet.
- Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
preemption of low priority frames by high priority frames.
- Add support for controlling MACSec offload using netlink SET.
- Rework devlink instance refcounts to allow registration and
de-registration under the instance lock. Split the code into
multiple files, drop some of the unnecessarily granular locks and
factor out common parts of netlink operation handling.
- Add TX frame aggregation parameters (for USB drivers).
- Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
messages with notifications for debug.
- Allow offloading of UDP NEW connections via act_ct.
- Add support for per action HW stats in TC.
- Support hardware miss to TC action (continue processing in SW from
a specific point in the action chain).
- Warn if old Wireless Extension user space interface is used with
modern cfg80211/mac80211 drivers. Do not support Wireless
Extensions for Wi-Fi 7 devices at all. Everyone should switch to
using nl80211 interface instead.
- Improve the CAN bit timing configuration. Use extack to return
error messages directly to user space, update the SJW handling,
including the definition of a new default value that will benefit
CAN-FD controllers, by increasing their oscillator tolerance.
New hardware / drivers:
- Ethernet:
- nVidia BlueField-3 support (control traffic driver)
- Ethernet support for imx93 SoCs
- Motorcomm yt8531 gigabit Ethernet PHY
- onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
- Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
- Amlogic gxl MDIO mux
- WiFi:
- RealTek RTL8188EU (rtl8xxxu)
- Qualcomm Wi-Fi 7 devices (ath12k)
- CAN:
- Renesas R-Car V4H
Drivers:
- Bluetooth:
- Set Per Platform Antenna Gain (PPAG) for Intel controllers.
- Ethernet NICs:
- Intel (1G, igc):
- support TSN / Qbv / packet scheduling features of i226 model
- Intel (100G, ice):
- use GNSS subsystem instead of TTY
- multi-buffer XDP support
- extend support for GPIO pins to E823 devices
- nVidia/Mellanox:
- update the shared buffer configuration on PFC commands
- implement PTP adjphase function for HW offset control
- TC support for Geneve and GRE with VF tunnel offload
- more efficient crypto key management method
- multi-port eswitch support
- Netronome/Corigine:
- add DCB IEEE support
- support IPsec offloading for NFP3800
- Freescale/NXP (enetc):
- support XDP_REDIRECT for XDP non-linear buffers
- improve reconfig, avoid link flap and waiting for idle
- support MAC Merge layer
- Other NICs:
- sfc/ef100: add basic devlink support for ef100
- ionic: rx_push mode operation (writing descriptors via MMIO)
- bnxt: use the auxiliary bus abstraction for RDMA
- r8169: disable ASPM and reset bus in case of tx timeout
- cpsw: support QSGMII mode for J721e CPSW9G
- cpts: support pulse-per-second output
- ngbe: add an mdio bus driver
- usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
- r8152: handle devices with FW with NCM support
- amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
- virtio-net: support multi buffer XDP
- virtio/vsock: replace virtio_vsock_pkt with sk_buff
- tsnep: XDP support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add support for latency TLV (in FW control messages)
- Microchip (sparx5):
- separate explicit and implicit traffic forwarding rules, make
the implicit rules always active
- add support for egress DSCP rewrite
- IS0 VCAP support (Ingress Classification)
- IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
etc.)
- ES2 VCAP support (Egress Access Control)
- support for Per-Stream Filtering and Policing (802.1Q,
8.6.5.1)
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- add MAB (port auth) offload support
- enable PTP receive for mv88e6390
- NXP (ocelot):
- support MAC Merge layer
- support for the the vsc7512 internal copper phys
- Microchip:
- lan9303: convert to PHYLINK
- lan966x: support TC flower filter statistics
- lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
- lan937x: support Credit Based Shaper configuration
- ksz9477: support Energy Efficient Ethernet
- other:
- qca8k: convert to regmap read/write API, use bulk operations
- rswitch: Improve TX timestamp accuracy
- Intel WiFi (iwlwifi):
- EHT (Wi-Fi 7) rate reporting
- STEP equalizer support: transfer some STEP (connection to radio
on platforms with integrated wifi) related parameters from the
BIOS to the firmware.
- Qualcomm 802.11ax WiFi (ath11k):
- IPQ5018 support
- Fine Timing Measurement (FTM) responder role support
- channel 177 support
- MediaTek WiFi (mt76):
- per-PHY LED support
- mt7996: EHT (Wi-Fi 7) support
- Wireless Ethernet Dispatch (WED) reset support
- switch to using page pool allocator
- RealTek WiFi (rtw89):
- support new version of Bluetooth co-existance
- Mobile:
- rmnet: support TX aggregation"
* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
page_pool: add a comment explaining the fragment counter usage
net: ethtool: fix __ethtool_dev_mm_supported() implementation
ethtool: pse-pd: Fix double word in comments
xsk: add linux/vmalloc.h to xsk.c
sefltests: netdevsim: wait for devlink instance after netns removal
selftest: fib_tests: Always cleanup before exit
net/mlx5e: Align IPsec ASO result memory to be as required by hardware
net/mlx5e: TC, Set CT miss to the specific ct action instance
net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
net/mlx5: Refactor tc miss handling to a single function
net/mlx5: Kconfig: Make tc offload depend on tc skb extension
net/sched: flower: Support hardware miss to tc action
net/sched: flower: Move filter handle initialization earlier
net/sched: cls_api: Support hardware miss to tc action
net/sched: Rename user cookie and act cookie
sfc: fix builds without CONFIG_RTC_LIB
sfc: clean up some inconsistent indentings
net/mlx4_en: Introduce flexible array to silence overflow warning
net: lan966x: Fix possible deadlock inside PTP
net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
...
Diffstat (limited to 'drivers/clk/ux500')
-rw-r--r-- | drivers/clk/ux500/Makefile | 18 | ||||
-rw-r--r-- | drivers/clk/ux500/abx500-clk.c | 126 | ||||
-rw-r--r-- | drivers/clk/ux500/clk-prcc.c | 159 | ||||
-rw-r--r-- | drivers/clk/ux500/clk-prcmu.c | 400 | ||||
-rw-r--r-- | drivers/clk/ux500/clk-sysctrl.c | 225 | ||||
-rw-r--r-- | drivers/clk/ux500/clk.h | 96 | ||||
-rw-r--r-- | drivers/clk/ux500/prcc.h | 19 | ||||
-rw-r--r-- | drivers/clk/ux500/reset-prcc.c | 181 | ||||
-rw-r--r-- | drivers/clk/ux500/reset-prcc.h | 23 | ||||
-rw-r--r-- | drivers/clk/ux500/u8500_of_clk.c | 618 |
10 files changed, 1865 insertions, 0 deletions
diff --git a/drivers/clk/ux500/Makefile b/drivers/clk/ux500/Makefile new file mode 100644 index 000000000..c29b83df4 --- /dev/null +++ b/drivers/clk/ux500/Makefile @@ -0,0 +1,18 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for ux500 clocks +# + +# Clock types +obj-y += clk-prcc.o +obj-y += clk-prcmu.o +obj-y += clk-sysctrl.o + +# Reset control +obj-y += reset-prcc.o + +# Clock definitions +obj-y += u8500_of_clk.o + +# ABX500 clock driver +obj-y += abx500-clk.o diff --git a/drivers/clk/ux500/abx500-clk.c b/drivers/clk/ux500/abx500-clk.c new file mode 100644 index 000000000..b2ddbf08f --- /dev/null +++ b/drivers/clk/ux500/abx500-clk.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * abx500 clock implementation for ux500 platform. + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#include <linux/err.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/mfd/abx500/ab8500.h> +#include <linux/mfd/abx500/ab8500-sysctrl.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <dt-bindings/clock/ste-ab8500.h> +#include "clk.h" + +#define AB8500_NUM_CLKS 6 + +static struct clk *ab8500_clks[AB8500_NUM_CLKS]; +static struct clk_onecell_data ab8500_clk_data; + +/* Clock definitions for ab8500 */ +static int ab8500_reg_clks(struct device *dev) +{ + int ret; + struct clk *clk; + struct device_node *np = dev->of_node; + const char *intclk_parents[] = {"ab8500_sysclk", "ulpclk"}; + u16 intclk_reg_sel[] = {0 , AB8500_SYSULPCLKCTRL1}; + u8 intclk_reg_mask[] = {0 , AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_MASK}; + u8 intclk_reg_bits[] = { + 0 , + (1 << AB8500_SYSULPCLKCTRL1_SYSULPCLKINTSEL_SHIFT) + }; + + /* Enable SWAT */ + ret = ab8500_sysctrl_set(AB8500_SWATCTRL, AB8500_SWATCTRL_SWATENABLE); + if (ret) + return ret; + + /* ab8500_sysclk2 */ + clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk2", "ab8500_sysclk", + AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF2REQ, + AB8500_SYSULPCLKCTRL1_SYSCLKBUF2REQ, 0, 0); + ab8500_clks[AB8500_SYSCLK_BUF2] = clk; + + /* ab8500_sysclk3 */ + clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk3", "ab8500_sysclk", + AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF3REQ, + AB8500_SYSULPCLKCTRL1_SYSCLKBUF3REQ, 0, 0); + ab8500_clks[AB8500_SYSCLK_BUF3] = clk; + + /* ab8500_sysclk4 */ + clk = clk_reg_sysctrl_gate(dev , "ab8500_sysclk4", "ab8500_sysclk", + AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_SYSCLKBUF4REQ, + AB8500_SYSULPCLKCTRL1_SYSCLKBUF4REQ, 0, 0); + ab8500_clks[AB8500_SYSCLK_BUF4] = clk; + + /* ab_ulpclk */ + clk = clk_reg_sysctrl_gate_fixed_rate(dev, "ulpclk", NULL, + AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_ULPCLKREQ, + AB8500_SYSULPCLKCTRL1_ULPCLKREQ, + 38400000, 9000, 0); + ab8500_clks[AB8500_SYSCLK_ULP] = clk; + + /* ab8500_intclk */ + clk = clk_reg_sysctrl_set_parent(dev , "intclk", intclk_parents, 2, + intclk_reg_sel, intclk_reg_mask, intclk_reg_bits, 0); + ab8500_clks[AB8500_SYSCLK_INT] = clk; + + /* ab8500_audioclk */ + clk = clk_reg_sysctrl_gate(dev , "audioclk", "intclk", + AB8500_SYSULPCLKCTRL1, AB8500_SYSULPCLKCTRL1_AUDIOCLKENA, + AB8500_SYSULPCLKCTRL1_AUDIOCLKENA, 0, 0); + ab8500_clks[AB8500_SYSCLK_AUDIO] = clk; + + ab8500_clk_data.clks = ab8500_clks; + ab8500_clk_data.clk_num = ARRAY_SIZE(ab8500_clks); + of_clk_add_provider(np, of_clk_src_onecell_get, &ab8500_clk_data); + + dev_info(dev, "registered clocks for ab850x\n"); + + return 0; +} + +static int abx500_clk_probe(struct platform_device *pdev) +{ + struct ab8500 *parent = dev_get_drvdata(pdev->dev.parent); + int ret; + + if (is_ab8500(parent) || is_ab8505(parent)) { + ret = ab8500_reg_clks(&pdev->dev); + } else { + dev_err(&pdev->dev, "non supported plf id\n"); + return -ENODEV; + } + + return ret; +} + +static const struct of_device_id abx500_clk_match[] = { + { .compatible = "stericsson,ab8500-clk", }, + {} +}; + +static struct platform_driver abx500_clk_driver = { + .driver = { + .name = "abx500-clk", + .of_match_table = abx500_clk_match, + }, + .probe = abx500_clk_probe, +}; + +static int __init abx500_clk_init(void) +{ + return platform_driver_register(&abx500_clk_driver); +} +arch_initcall(abx500_clk_init); + +MODULE_AUTHOR("Ulf Hansson <ulf.hansson@linaro.org"); +MODULE_DESCRIPTION("ABX500 clk driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/clk/ux500/clk-prcc.c b/drivers/clk/ux500/clk-prcc.c new file mode 100644 index 000000000..b85ee0930 --- /dev/null +++ b/drivers/clk/ux500/clk-prcc.c @@ -0,0 +1,159 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PRCC clock implementation for ux500 platform. + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#include <linux/clk-provider.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/types.h> + +#include "clk.h" + +#define PRCC_PCKEN 0x000 +#define PRCC_PCKDIS 0x004 +#define PRCC_KCKEN 0x008 +#define PRCC_KCKDIS 0x00C +#define PRCC_PCKSR 0x010 +#define PRCC_KCKSR 0x014 + +#define to_clk_prcc(_hw) container_of(_hw, struct clk_prcc, hw) + +struct clk_prcc { + struct clk_hw hw; + void __iomem *base; + u32 cg_sel; + int is_enabled; +}; + +/* PRCC clock operations. */ + +static int clk_prcc_pclk_enable(struct clk_hw *hw) +{ + struct clk_prcc *clk = to_clk_prcc(hw); + + writel(clk->cg_sel, (clk->base + PRCC_PCKEN)); + while (!(readl(clk->base + PRCC_PCKSR) & clk->cg_sel)) + cpu_relax(); + + clk->is_enabled = 1; + return 0; +} + +static void clk_prcc_pclk_disable(struct clk_hw *hw) +{ + struct clk_prcc *clk = to_clk_prcc(hw); + + writel(clk->cg_sel, (clk->base + PRCC_PCKDIS)); + clk->is_enabled = 0; +} + +static int clk_prcc_kclk_enable(struct clk_hw *hw) +{ + struct clk_prcc *clk = to_clk_prcc(hw); + + writel(clk->cg_sel, (clk->base + PRCC_KCKEN)); + while (!(readl(clk->base + PRCC_KCKSR) & clk->cg_sel)) + cpu_relax(); + + clk->is_enabled = 1; + return 0; +} + +static void clk_prcc_kclk_disable(struct clk_hw *hw) +{ + struct clk_prcc *clk = to_clk_prcc(hw); + + writel(clk->cg_sel, (clk->base + PRCC_KCKDIS)); + clk->is_enabled = 0; +} + +static int clk_prcc_is_enabled(struct clk_hw *hw) +{ + struct clk_prcc *clk = to_clk_prcc(hw); + return clk->is_enabled; +} + +static const struct clk_ops clk_prcc_pclk_ops = { + .enable = clk_prcc_pclk_enable, + .disable = clk_prcc_pclk_disable, + .is_enabled = clk_prcc_is_enabled, +}; + +static const struct clk_ops clk_prcc_kclk_ops = { + .enable = clk_prcc_kclk_enable, + .disable = clk_prcc_kclk_disable, + .is_enabled = clk_prcc_is_enabled, +}; + +static struct clk *clk_reg_prcc(const char *name, + const char *parent_name, + resource_size_t phy_base, + u32 cg_sel, + unsigned long flags, + const struct clk_ops *clk_prcc_ops) +{ + struct clk_prcc *clk; + struct clk_init_data clk_prcc_init; + struct clk *clk_reg; + + if (!name) { + pr_err("clk_prcc: %s invalid arguments passed\n", __func__); + return ERR_PTR(-EINVAL); + } + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) + return ERR_PTR(-ENOMEM); + + clk->base = ioremap(phy_base, SZ_4K); + if (!clk->base) + goto free_clk; + + clk->cg_sel = cg_sel; + clk->is_enabled = 1; + + clk_prcc_init.name = name; + clk_prcc_init.ops = clk_prcc_ops; + clk_prcc_init.flags = flags; + clk_prcc_init.parent_names = (parent_name ? &parent_name : NULL); + clk_prcc_init.num_parents = (parent_name ? 1 : 0); + clk->hw.init = &clk_prcc_init; + + clk_reg = clk_register(NULL, &clk->hw); + if (IS_ERR_OR_NULL(clk_reg)) + goto unmap_clk; + + return clk_reg; + +unmap_clk: + iounmap(clk->base); +free_clk: + kfree(clk); + pr_err("clk_prcc: %s failed to register clk\n", __func__); + return ERR_PTR(-ENOMEM); +} + +struct clk *clk_reg_prcc_pclk(const char *name, + const char *parent_name, + resource_size_t phy_base, + u32 cg_sel, + unsigned long flags) +{ + return clk_reg_prcc(name, parent_name, phy_base, cg_sel, flags, + &clk_prcc_pclk_ops); +} + +struct clk *clk_reg_prcc_kclk(const char *name, + const char *parent_name, + resource_size_t phy_base, + u32 cg_sel, + unsigned long flags) +{ + return clk_reg_prcc(name, parent_name, phy_base, cg_sel, flags, + &clk_prcc_kclk_ops); +} diff --git a/drivers/clk/ux500/clk-prcmu.c b/drivers/clk/ux500/clk-prcmu.c new file mode 100644 index 000000000..4deb37f19 --- /dev/null +++ b/drivers/clk/ux500/clk-prcmu.c @@ -0,0 +1,400 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PRCMU clock implementation for ux500 platform. + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#include <linux/clk-provider.h> +#include <linux/mfd/dbx500-prcmu.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> +#include "clk.h" + +#define to_clk_prcmu(_hw) container_of(_hw, struct clk_prcmu, hw) +#define to_clk_prcmu_clkout(_hw) container_of(_hw, struct clk_prcmu_clkout, hw) + +struct clk_prcmu { + struct clk_hw hw; + u8 cg_sel; + int opp_requested; +}; + +struct clk_prcmu_clkout { + struct clk_hw hw; + u8 clkout_id; + u8 source; + u8 divider; +}; + +/* PRCMU clock operations. */ + +static int clk_prcmu_prepare(struct clk_hw *hw) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + + return prcmu_request_clock(clk->cg_sel, true); +} + +static void clk_prcmu_unprepare(struct clk_hw *hw) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + if (prcmu_request_clock(clk->cg_sel, false)) + pr_err("clk_prcmu: %s failed to disable %s.\n", __func__, + clk_hw_get_name(hw)); +} + +static unsigned long clk_prcmu_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + return prcmu_clock_rate(clk->cg_sel); +} + +static long clk_prcmu_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + return prcmu_round_clock_rate(clk->cg_sel, rate); +} + +static int clk_prcmu_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + return prcmu_set_clock_rate(clk->cg_sel, rate); +} + +static int clk_prcmu_opp_prepare(struct clk_hw *hw) +{ + int err; + struct clk_prcmu *clk = to_clk_prcmu(hw); + + if (!clk->opp_requested) { + err = prcmu_qos_add_requirement(PRCMU_QOS_APE_OPP, + (char *)clk_hw_get_name(hw), + 100); + if (err) { + pr_err("clk_prcmu: %s fail req APE OPP for %s.\n", + __func__, clk_hw_get_name(hw)); + return err; + } + clk->opp_requested = 1; + } + + err = prcmu_request_clock(clk->cg_sel, true); + if (err) { + prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, + (char *)clk_hw_get_name(hw)); + clk->opp_requested = 0; + return err; + } + + return 0; +} + +static void clk_prcmu_opp_unprepare(struct clk_hw *hw) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + + if (prcmu_request_clock(clk->cg_sel, false)) { + pr_err("clk_prcmu: %s failed to disable %s.\n", __func__, + clk_hw_get_name(hw)); + return; + } + + if (clk->opp_requested) { + prcmu_qos_remove_requirement(PRCMU_QOS_APE_OPP, + (char *)clk_hw_get_name(hw)); + clk->opp_requested = 0; + } +} + +static int clk_prcmu_opp_volt_prepare(struct clk_hw *hw) +{ + int err; + struct clk_prcmu *clk = to_clk_prcmu(hw); + + if (!clk->opp_requested) { + err = prcmu_request_ape_opp_100_voltage(true); + if (err) { + pr_err("clk_prcmu: %s fail req APE OPP VOLT for %s.\n", + __func__, clk_hw_get_name(hw)); + return err; + } + clk->opp_requested = 1; + } + + err = prcmu_request_clock(clk->cg_sel, true); + if (err) { + prcmu_request_ape_opp_100_voltage(false); + clk->opp_requested = 0; + return err; + } + + return 0; +} + +static void clk_prcmu_opp_volt_unprepare(struct clk_hw *hw) +{ + struct clk_prcmu *clk = to_clk_prcmu(hw); + + if (prcmu_request_clock(clk->cg_sel, false)) { + pr_err("clk_prcmu: %s failed to disable %s.\n", __func__, + clk_hw_get_name(hw)); + return; + } + + if (clk->opp_requested) { + prcmu_request_ape_opp_100_voltage(false); + clk->opp_requested = 0; + } +} + +static const struct clk_ops clk_prcmu_scalable_ops = { + .prepare = clk_prcmu_prepare, + .unprepare = clk_prcmu_unprepare, + .recalc_rate = clk_prcmu_recalc_rate, + .round_rate = clk_prcmu_round_rate, + .set_rate = clk_prcmu_set_rate, +}; + +static const struct clk_ops clk_prcmu_gate_ops = { + .prepare = clk_prcmu_prepare, + .unprepare = clk_prcmu_unprepare, + .recalc_rate = clk_prcmu_recalc_rate, +}; + +static const struct clk_ops clk_prcmu_scalable_rate_ops = { + .recalc_rate = clk_prcmu_recalc_rate, + .round_rate = clk_prcmu_round_rate, + .set_rate = clk_prcmu_set_rate, +}; + +static const struct clk_ops clk_prcmu_rate_ops = { + .recalc_rate = clk_prcmu_recalc_rate, +}; + +static const struct clk_ops clk_prcmu_opp_gate_ops = { + .prepare = clk_prcmu_opp_prepare, + .unprepare = clk_prcmu_opp_unprepare, + .recalc_rate = clk_prcmu_recalc_rate, +}; + +static const struct clk_ops clk_prcmu_opp_volt_scalable_ops = { + .prepare = clk_prcmu_opp_volt_prepare, + .unprepare = clk_prcmu_opp_volt_unprepare, + .recalc_rate = clk_prcmu_recalc_rate, + .round_rate = clk_prcmu_round_rate, + .set_rate = clk_prcmu_set_rate, +}; + +static struct clk_hw *clk_reg_prcmu(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags, + const struct clk_ops *clk_prcmu_ops) +{ + struct clk_prcmu *clk; + struct clk_init_data clk_prcmu_init; + int ret; + + if (!name) { + pr_err("clk_prcmu: %s invalid arguments passed\n", __func__); + return ERR_PTR(-EINVAL); + } + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) + return ERR_PTR(-ENOMEM); + + clk->cg_sel = cg_sel; + clk->opp_requested = 0; + /* "rate" can be used for changing the initial frequency */ + if (rate) + prcmu_set_clock_rate(cg_sel, rate); + + clk_prcmu_init.name = name; + clk_prcmu_init.ops = clk_prcmu_ops; + clk_prcmu_init.flags = flags; + clk_prcmu_init.parent_names = (parent_name ? &parent_name : NULL); + clk_prcmu_init.num_parents = (parent_name ? 1 : 0); + clk->hw.init = &clk_prcmu_init; + + ret = clk_hw_register(NULL, &clk->hw); + if (ret) + goto free_clk; + + return &clk->hw; + +free_clk: + kfree(clk); + pr_err("clk_prcmu: %s failed to register clk\n", __func__); + return ERR_PTR(-ENOMEM); +} + +struct clk_hw *clk_reg_prcmu_scalable(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags, + &clk_prcmu_scalable_ops); +} + +struct clk_hw *clk_reg_prcmu_gate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags, + &clk_prcmu_gate_ops); +} + +struct clk_hw *clk_reg_prcmu_scalable_rate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags, + &clk_prcmu_scalable_rate_ops); +} + +struct clk_hw *clk_reg_prcmu_rate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags, + &clk_prcmu_rate_ops); +} + +struct clk_hw *clk_reg_prcmu_opp_gate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, 0, flags, + &clk_prcmu_opp_gate_ops); +} + +struct clk_hw *clk_reg_prcmu_opp_volt_scalable(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags) +{ + return clk_reg_prcmu(name, parent_name, cg_sel, rate, flags, + &clk_prcmu_opp_volt_scalable_ops); +} + +/* The clkout (external) clock is special and need special ops */ + +static int clk_prcmu_clkout_prepare(struct clk_hw *hw) +{ + struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw); + + return prcmu_config_clkout(clk->clkout_id, clk->source, clk->divider); +} + +static void clk_prcmu_clkout_unprepare(struct clk_hw *hw) +{ + struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw); + int ret; + + /* The clkout clock is disabled by dividing by 0 */ + ret = prcmu_config_clkout(clk->clkout_id, clk->source, 0); + if (ret) + pr_err("clk_prcmu: %s failed to disable %s\n", __func__, + clk_hw_get_name(hw)); +} + +static unsigned long clk_prcmu_clkout_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw); + + return (parent_rate / clk->divider); +} + +static u8 clk_prcmu_clkout_get_parent(struct clk_hw *hw) +{ + struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw); + + return clk->source; +} + +static int clk_prcmu_clkout_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_prcmu_clkout *clk = to_clk_prcmu_clkout(hw); + + clk->source = index; + /* Make sure the change reaches the hardware immediately */ + if (clk_hw_is_prepared(hw)) + return clk_prcmu_clkout_prepare(hw); + return 0; +} + +static const struct clk_ops clk_prcmu_clkout_ops = { + .prepare = clk_prcmu_clkout_prepare, + .unprepare = clk_prcmu_clkout_unprepare, + .recalc_rate = clk_prcmu_clkout_recalc_rate, + .get_parent = clk_prcmu_clkout_get_parent, + .set_parent = clk_prcmu_clkout_set_parent, +}; + +struct clk_hw *clk_reg_prcmu_clkout(const char *name, + const char * const *parent_names, + int num_parents, + u8 source, u8 divider) + +{ + struct clk_prcmu_clkout *clk; + struct clk_init_data clk_prcmu_clkout_init; + u8 clkout_id; + int ret; + + if (!name) { + pr_err("clk_prcmu_clkout: %s invalid arguments passed\n", __func__); + return ERR_PTR(-EINVAL); + } + + if (!strcmp(name, "clkout1")) + clkout_id = 0; + else if (!strcmp(name, "clkout2")) + clkout_id = 1; + else { + pr_err("clk_prcmu_clkout: %s bad clock name\n", __func__); + return ERR_PTR(-EINVAL); + } + + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) + return ERR_PTR(-ENOMEM); + + clk->clkout_id = clkout_id; + clk->source = source; + clk->divider = divider; + + clk_prcmu_clkout_init.name = name; + clk_prcmu_clkout_init.ops = &clk_prcmu_clkout_ops; + clk_prcmu_clkout_init.flags = CLK_GET_RATE_NOCACHE; + clk_prcmu_clkout_init.parent_names = parent_names; + clk_prcmu_clkout_init.num_parents = num_parents; + clk->hw.init = &clk_prcmu_clkout_init; + + ret = clk_hw_register(NULL, &clk->hw); + if (ret) + goto free_clkout; + + return &clk->hw; +free_clkout: + kfree(clk); + pr_err("clk_prcmu_clkout: %s failed to register clk\n", __func__); + return ERR_PTR(-ENOMEM); +} diff --git a/drivers/clk/ux500/clk-sysctrl.c b/drivers/clk/ux500/clk-sysctrl.c new file mode 100644 index 000000000..702f2f8b4 --- /dev/null +++ b/drivers/clk/ux500/clk-sysctrl.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Sysctrl clock implementation for ux500 platform. + * + * Copyright (C) 2013 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#include <linux/clk-provider.h> +#include <linux/mfd/abx500/ab8500-sysctrl.h> +#include <linux/device.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/err.h> +#include "clk.h" + +#define SYSCTRL_MAX_NUM_PARENTS 4 + +#define to_clk_sysctrl(_hw) container_of(_hw, struct clk_sysctrl, hw) + +struct clk_sysctrl { + struct clk_hw hw; + struct device *dev; + u8 parent_index; + u16 reg_sel[SYSCTRL_MAX_NUM_PARENTS]; + u8 reg_mask[SYSCTRL_MAX_NUM_PARENTS]; + u8 reg_bits[SYSCTRL_MAX_NUM_PARENTS]; + unsigned long rate; + unsigned long enable_delay_us; +}; + +/* Sysctrl clock operations. */ + +static int clk_sysctrl_prepare(struct clk_hw *hw) +{ + int ret; + struct clk_sysctrl *clk = to_clk_sysctrl(hw); + + ret = ab8500_sysctrl_write(clk->reg_sel[0], clk->reg_mask[0], + clk->reg_bits[0]); + + if (!ret && clk->enable_delay_us) + usleep_range(clk->enable_delay_us, clk->enable_delay_us + + (clk->enable_delay_us >> 2)); + + return ret; +} + +static void clk_sysctrl_unprepare(struct clk_hw *hw) +{ + struct clk_sysctrl *clk = to_clk_sysctrl(hw); + if (ab8500_sysctrl_clear(clk->reg_sel[0], clk->reg_mask[0])) + dev_err(clk->dev, "clk_sysctrl: %s fail to clear %s.\n", + __func__, clk_hw_get_name(hw)); +} + +static unsigned long clk_sysctrl_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_sysctrl *clk = to_clk_sysctrl(hw); + return clk->rate; +} + +static int clk_sysctrl_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_sysctrl *clk = to_clk_sysctrl(hw); + u8 old_index = clk->parent_index; + int ret = 0; + + if (clk->reg_sel[old_index]) { + ret = ab8500_sysctrl_clear(clk->reg_sel[old_index], + clk->reg_mask[old_index]); + if (ret) + return ret; + } + + if (clk->reg_sel[index]) { + ret = ab8500_sysctrl_write(clk->reg_sel[index], + clk->reg_mask[index], + clk->reg_bits[index]); + if (ret) { + if (clk->reg_sel[old_index]) + ab8500_sysctrl_write(clk->reg_sel[old_index], + clk->reg_mask[old_index], + clk->reg_bits[old_index]); + return ret; + } + } + clk->parent_index = index; + + return ret; +} + +static u8 clk_sysctrl_get_parent(struct clk_hw *hw) +{ + struct clk_sysctrl *clk = to_clk_sysctrl(hw); + return clk->parent_index; +} + +static const struct clk_ops clk_sysctrl_gate_ops = { + .prepare = clk_sysctrl_prepare, + .unprepare = clk_sysctrl_unprepare, +}; + +static const struct clk_ops clk_sysctrl_gate_fixed_rate_ops = { + .prepare = clk_sysctrl_prepare, + .unprepare = clk_sysctrl_unprepare, + .recalc_rate = clk_sysctrl_recalc_rate, +}; + +static const struct clk_ops clk_sysctrl_set_parent_ops = { + .set_parent = clk_sysctrl_set_parent, + .get_parent = clk_sysctrl_get_parent, +}; + +static struct clk *clk_reg_sysctrl(struct device *dev, + const char *name, + const char **parent_names, + u8 num_parents, + u16 *reg_sel, + u8 *reg_mask, + u8 *reg_bits, + unsigned long rate, + unsigned long enable_delay_us, + unsigned long flags, + const struct clk_ops *clk_sysctrl_ops) +{ + struct clk_sysctrl *clk; + struct clk_init_data clk_sysctrl_init; + struct clk *clk_reg; + int i; + + if (!dev) + return ERR_PTR(-EINVAL); + + if (!name || (num_parents > SYSCTRL_MAX_NUM_PARENTS)) { + dev_err(dev, "clk_sysctrl: invalid arguments passed\n"); + return ERR_PTR(-EINVAL); + } + + clk = devm_kzalloc(dev, sizeof(*clk), GFP_KERNEL); + if (!clk) + return ERR_PTR(-ENOMEM); + + /* set main clock registers */ + clk->reg_sel[0] = reg_sel[0]; + clk->reg_bits[0] = reg_bits[0]; + clk->reg_mask[0] = reg_mask[0]; + + /* handle clocks with more than one parent */ + for (i = 1; i < num_parents; i++) { + clk->reg_sel[i] = reg_sel[i]; + clk->reg_bits[i] = reg_bits[i]; + clk->reg_mask[i] = reg_mask[i]; + } + + clk->parent_index = 0; + clk->rate = rate; + clk->enable_delay_us = enable_delay_us; + clk->dev = dev; + + clk_sysctrl_init.name = name; + clk_sysctrl_init.ops = clk_sysctrl_ops; + clk_sysctrl_init.flags = flags; + clk_sysctrl_init.parent_names = parent_names; + clk_sysctrl_init.num_parents = num_parents; + clk->hw.init = &clk_sysctrl_init; + + clk_reg = devm_clk_register(clk->dev, &clk->hw); + if (IS_ERR(clk_reg)) + dev_err(dev, "clk_sysctrl: clk_register failed\n"); + + return clk_reg; +} + +struct clk *clk_reg_sysctrl_gate(struct device *dev, + const char *name, + const char *parent_name, + u16 reg_sel, + u8 reg_mask, + u8 reg_bits, + unsigned long enable_delay_us, + unsigned long flags) +{ + const char **parent_names = (parent_name ? &parent_name : NULL); + u8 num_parents = (parent_name ? 1 : 0); + + return clk_reg_sysctrl(dev, name, parent_names, num_parents, + ®_sel, ®_mask, ®_bits, 0, enable_delay_us, + flags, &clk_sysctrl_gate_ops); +} + +struct clk *clk_reg_sysctrl_gate_fixed_rate(struct device *dev, + const char *name, + const char *parent_name, + u16 reg_sel, + u8 reg_mask, + u8 reg_bits, + unsigned long rate, + unsigned long enable_delay_us, + unsigned long flags) +{ + const char **parent_names = (parent_name ? &parent_name : NULL); + u8 num_parents = (parent_name ? 1 : 0); + + return clk_reg_sysctrl(dev, name, parent_names, num_parents, + ®_sel, ®_mask, ®_bits, + rate, enable_delay_us, flags, + &clk_sysctrl_gate_fixed_rate_ops); +} + +struct clk *clk_reg_sysctrl_set_parent(struct device *dev, + const char *name, + const char **parent_names, + u8 num_parents, + u16 *reg_sel, + u8 *reg_mask, + u8 *reg_bits, + unsigned long flags) +{ + return clk_reg_sysctrl(dev, name, parent_names, num_parents, + reg_sel, reg_mask, reg_bits, 0, 0, flags, + &clk_sysctrl_set_parent_ops); +} diff --git a/drivers/clk/ux500/clk.h b/drivers/clk/ux500/clk.h new file mode 100644 index 000000000..91003cf80 --- /dev/null +++ b/drivers/clk/ux500/clk.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Clocks for ux500 platforms + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#ifndef __UX500_CLK_H +#define __UX500_CLK_H + +#include <linux/device.h> +#include <linux/types.h> + +struct clk; +struct clk_hw; + +struct clk *clk_reg_prcc_pclk(const char *name, + const char *parent_name, + resource_size_t phy_base, + u32 cg_sel, + unsigned long flags); + +struct clk *clk_reg_prcc_kclk(const char *name, + const char *parent_name, + resource_size_t phy_base, + u32 cg_sel, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_scalable(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_gate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_scalable_rate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_rate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_opp_gate(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_opp_volt_scalable(const char *name, + const char *parent_name, + u8 cg_sel, + unsigned long rate, + unsigned long flags); + +struct clk_hw *clk_reg_prcmu_clkout(const char *name, + const char * const *parent_names, + int num_parents, + u8 source, u8 divider); + +struct clk *clk_reg_sysctrl_gate(struct device *dev, + const char *name, + const char *parent_name, + u16 reg_sel, + u8 reg_mask, + u8 reg_bits, + unsigned long enable_delay_us, + unsigned long flags); + +struct clk *clk_reg_sysctrl_gate_fixed_rate(struct device *dev, + const char *name, + const char *parent_name, + u16 reg_sel, + u8 reg_mask, + u8 reg_bits, + unsigned long rate, + unsigned long enable_delay_us, + unsigned long flags); + +struct clk *clk_reg_sysctrl_set_parent(struct device *dev, + const char *name, + const char **parent_names, + u8 num_parents, + u16 *reg_sel, + u8 *reg_mask, + u8 *reg_bits, + unsigned long flags); + +#endif /* __UX500_CLK_H */ diff --git a/drivers/clk/ux500/prcc.h b/drivers/clk/ux500/prcc.h new file mode 100644 index 000000000..5b6774d79 --- /dev/null +++ b/drivers/clk/ux500/prcc.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __PRCC_H +#define __PRCC_H + +#define PRCC_NUM_PERIPH_CLUSTERS 6 +#define PRCC_PERIPHS_PER_CLUSTER 32 + +/* CLKRST4 is missing making it hard to index things */ +enum clkrst_index { + CLKRST1_INDEX = 0, + CLKRST2_INDEX, + CLKRST3_INDEX, + CLKRST5_INDEX, + CLKRST6_INDEX, + CLKRST_MAX, +}; + +#endif diff --git a/drivers/clk/ux500/reset-prcc.c b/drivers/clk/ux500/reset-prcc.c new file mode 100644 index 000000000..f7e48941f --- /dev/null +++ b/drivers/clk/ux500/reset-prcc.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Reset controller portions for the U8500 PRCC + * Copyright (C) 2021 Linus Walleij <linus.walleij@linaro.org> + */ +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/slab.h> +#include <linux/io.h> +#include <linux/err.h> +#include <linux/types.h> +#include <linux/reset-controller.h> +#include <linux/bits.h> +#include <linux/delay.h> + +#include "prcc.h" +#include "reset-prcc.h" + +#define to_u8500_prcc_reset(p) container_of((p), struct u8500_prcc_reset, rcdev) + +/* This macro flattens the 2-dimensional PRCC numberspace */ +#define PRCC_RESET_LINE(prcc_num, bit) \ + (((prcc_num) * PRCC_PERIPHS_PER_CLUSTER) + (bit)) + +/* + * Reset registers in each PRCC - the reset lines are active low + * so what you need to do is write a bit for the peripheral you + * want to put into reset into the CLEAR register, this will assert + * the reset by pulling the line low. SET take the device out of + * reset. The status reflects the actual state of the line. + */ +#define PRCC_K_SOFTRST_SET 0x018 +#define PRCC_K_SOFTRST_CLEAR 0x01c +#define PRCC_K_RST_STATUS 0x020 + +static int prcc_num_to_index(unsigned int num) +{ + switch (num) { + case 1: + return CLKRST1_INDEX; + case 2: + return CLKRST2_INDEX; + case 3: + return CLKRST3_INDEX; + case 5: + return CLKRST5_INDEX; + case 6: + return CLKRST6_INDEX; + } + return -EINVAL; +} + +static void __iomem *u8500_prcc_reset_base(struct u8500_prcc_reset *ur, + unsigned long id) +{ + unsigned int prcc_num, index; + + prcc_num = id / PRCC_PERIPHS_PER_CLUSTER; + index = prcc_num_to_index(prcc_num); + + if (index >= ARRAY_SIZE(ur->base)) + return NULL; + + return ur->base[index]; +} + +static int u8500_prcc_reset(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct u8500_prcc_reset *ur = to_u8500_prcc_reset(rcdev); + void __iomem *base = u8500_prcc_reset_base(ur, id); + unsigned int bit = id % PRCC_PERIPHS_PER_CLUSTER; + + pr_debug("PRCC cycle reset id %lu, bit %u\n", id, bit); + + /* + * Assert reset and then release it. The one microsecond + * delay is found in the vendor reference code. + */ + writel(BIT(bit), base + PRCC_K_SOFTRST_CLEAR); + udelay(1); + writel(BIT(bit), base + PRCC_K_SOFTRST_SET); + udelay(1); + + return 0; +} + +static int u8500_prcc_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct u8500_prcc_reset *ur = to_u8500_prcc_reset(rcdev); + void __iomem *base = u8500_prcc_reset_base(ur, id); + unsigned int bit = id % PRCC_PERIPHS_PER_CLUSTER; + + pr_debug("PRCC assert reset id %lu, bit %u\n", id, bit); + writel(BIT(bit), base + PRCC_K_SOFTRST_CLEAR); + + return 0; +} + +static int u8500_prcc_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct u8500_prcc_reset *ur = to_u8500_prcc_reset(rcdev); + void __iomem *base = u8500_prcc_reset_base(ur, id); + unsigned int bit = id % PRCC_PERIPHS_PER_CLUSTER; + + pr_debug("PRCC deassert reset id %lu, bit %u\n", id, bit); + writel(BIT(bit), base + PRCC_K_SOFTRST_SET); + + return 0; +} + +static int u8500_prcc_reset_status(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct u8500_prcc_reset *ur = to_u8500_prcc_reset(rcdev); + void __iomem *base = u8500_prcc_reset_base(ur, id); + unsigned int bit = id % PRCC_PERIPHS_PER_CLUSTER; + u32 val; + + pr_debug("PRCC check status on reset line id %lu, bit %u\n", id, bit); + val = readl(base + PRCC_K_RST_STATUS); + + /* Active low so return the inverse value of the bit */ + return !(val & BIT(bit)); +} + +static const struct reset_control_ops u8500_prcc_reset_ops = { + .reset = u8500_prcc_reset, + .assert = u8500_prcc_reset_assert, + .deassert = u8500_prcc_reset_deassert, + .status = u8500_prcc_reset_status, +}; + +static int u8500_prcc_reset_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + unsigned int prcc_num, bit; + + if (reset_spec->args_count != 2) + return -EINVAL; + + prcc_num = reset_spec->args[0]; + bit = reset_spec->args[1]; + + if (prcc_num != 1 && prcc_num != 2 && prcc_num != 3 && + prcc_num != 5 && prcc_num != 6) { + pr_err("%s: invalid PRCC %d\n", __func__, prcc_num); + return -EINVAL; + } + + pr_debug("located reset line %d at PRCC %d bit %d\n", + PRCC_RESET_LINE(prcc_num, bit), prcc_num, bit); + + return PRCC_RESET_LINE(prcc_num, bit); +} + +void u8500_prcc_reset_init(struct device_node *np, struct u8500_prcc_reset *ur) +{ + struct reset_controller_dev *rcdev = &ur->rcdev; + int ret; + int i; + + for (i = 0; i < CLKRST_MAX; i++) { + ur->base[i] = ioremap(ur->phy_base[i], SZ_4K); + if (!ur->base[i]) + pr_err("PRCC failed to remap for reset base %d (%08x)\n", + i, ur->phy_base[i]); + } + + rcdev->owner = THIS_MODULE; + rcdev->ops = &u8500_prcc_reset_ops; + rcdev->of_node = np; + rcdev->of_reset_n_cells = 2; + rcdev->of_xlate = u8500_prcc_reset_xlate; + + ret = reset_controller_register(rcdev); + if (ret) + pr_err("PRCC failed to register reset controller\n"); +} diff --git a/drivers/clk/ux500/reset-prcc.h b/drivers/clk/ux500/reset-prcc.h new file mode 100644 index 000000000..353c9719f --- /dev/null +++ b/drivers/clk/ux500/reset-prcc.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __RESET_PRCC_H +#define __RESET_PRCC_H + +#include <linux/reset-controller.h> +#include <linux/io.h> + +/** + * struct u8500_prcc_reset - U8500 PRCC reset controller state + * @rcdev: reset controller device + * @phy_base: the physical base address for each PRCC block + * @base: the remapped PRCC bases + */ +struct u8500_prcc_reset { + struct reset_controller_dev rcdev; + u32 phy_base[CLKRST_MAX]; + void __iomem *base[CLKRST_MAX]; +}; + +void u8500_prcc_reset_init(struct device_node *np, struct u8500_prcc_reset *ur); + +#endif diff --git a/drivers/clk/ux500/u8500_of_clk.c b/drivers/clk/ux500/u8500_of_clk.c new file mode 100644 index 000000000..8e2f6c65d --- /dev/null +++ b/drivers/clk/ux500/u8500_of_clk.c @@ -0,0 +1,618 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Clock definitions for u8500 platform. + * + * Copyright (C) 2012 ST-Ericsson SA + * Author: Ulf Hansson <ulf.hansson@linaro.org> + */ + +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk-provider.h> +#include <linux/mfd/dbx500-prcmu.h> + +#include "clk.h" +#include "prcc.h" +#include "reset-prcc.h" + +static struct clk *prcc_pclk[(PRCC_NUM_PERIPH_CLUSTERS + 1) * PRCC_PERIPHS_PER_CLUSTER]; +static struct clk *prcc_kclk[(PRCC_NUM_PERIPH_CLUSTERS + 1) * PRCC_PERIPHS_PER_CLUSTER]; +static struct clk_hw *clkout_clk[2]; + +#define PRCC_SHOW(clk, base, bit) \ + clk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] +#define PRCC_PCLK_STORE(clk, base, bit) \ + prcc_pclk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] = clk +#define PRCC_KCLK_STORE(clk, base, bit) \ + prcc_kclk[(base * PRCC_PERIPHS_PER_CLUSTER) + bit] = clk + +static struct clk *ux500_twocell_get(struct of_phandle_args *clkspec, + void *data) +{ + struct clk **clk_data = data; + unsigned int base, bit; + + if (clkspec->args_count != 2) + return ERR_PTR(-EINVAL); + + base = clkspec->args[0]; + bit = clkspec->args[1]; + + if (base != 1 && base != 2 && base != 3 && base != 5 && base != 6) { + pr_err("%s: invalid PRCC base %d\n", __func__, base); + return ERR_PTR(-EINVAL); + } + + return PRCC_SHOW(clk_data, base, bit); +} + +static struct clk_hw_onecell_data u8500_prcmu_hw_clks = { + .hws = { + /* + * This assignment makes sure the dynamic array + * gets the right size. + */ + [PRCMU_NUM_CLKS] = NULL, + }, + .num = PRCMU_NUM_CLKS, +}; + +/* Essentially names for the first PRCMU_CLKSRC_* defines */ +static const char * const u8500_clkout_parents[] = { + "clk38m_to_clkgen", + "aclk", + /* Just called "sysclk" in documentation */ + "ab8500_sysclk", + "lcdclk", + "sdmmcclk", + "tvclk", + "timclk", + /* CLK009 is not implemented, add it if you need it */ + "clk009", +}; + +static struct clk_hw *ux500_clkout_get(struct of_phandle_args *clkspec, + void *data) +{ + u32 id, source, divider; + struct clk_hw *clkout; + + if (clkspec->args_count != 3) + return ERR_PTR(-EINVAL); + + id = clkspec->args[0]; + source = clkspec->args[1]; + divider = clkspec->args[2]; + + if (id > 1) { + pr_err("%s: invalid clkout ID %d\n", __func__, id); + return ERR_PTR(-EINVAL); + } + + if (clkout_clk[id]) { + pr_info("%s: clkout%d already registered, not reconfiguring\n", + __func__, id + 1); + return clkout_clk[id]; + } + + if (source > 7) { + pr_err("%s: invalid source ID %d\n", __func__, source); + return ERR_PTR(-EINVAL); + } + + if (divider == 0 || divider > 63) { + pr_err("%s: invalid divider %d\n", __func__, divider); + return ERR_PTR(-EINVAL); + } + + pr_debug("registering clkout%d with source %d and divider %d\n", + id + 1, source, divider); + + clkout = clk_reg_prcmu_clkout(id ? "clkout2" : "clkout1", + u8500_clkout_parents, + ARRAY_SIZE(u8500_clkout_parents), + source, divider); + if (IS_ERR(clkout)) { + pr_err("failed to register clkout%d\n", id + 1); + return ERR_CAST(clkout); + } + + clkout_clk[id] = clkout; + + return clkout; +} + +static void u8500_clk_init(struct device_node *np) +{ + struct prcmu_fw_version *fw_version; + struct device_node *child = NULL; + const char *sgaclk_parent = NULL; + struct clk *clk, *rtc_clk, *twd_clk; + u32 bases[CLKRST_MAX]; + struct u8500_prcc_reset *rstc; + int i; + + /* + * We allocate the reset controller here so that we can fill in the + * base addresses properly and pass to the reset controller init + * function later on. + */ + rstc = kzalloc(sizeof(*rstc), GFP_KERNEL); + if (!rstc) + return; + + for (i = 0; i < ARRAY_SIZE(bases); i++) { + struct resource r; + + if (of_address_to_resource(np, i, &r)) + /* Not much choice but to continue */ + pr_err("failed to get CLKRST %d base address\n", + i + 1); + bases[i] = r.start; + rstc->phy_base[i] = r.start; + } + + /* Clock sources */ + u8500_prcmu_hw_clks.hws[PRCMU_PLLSOC0] = + clk_reg_prcmu_gate("soc0_pll", NULL, PRCMU_PLLSOC0, + CLK_IGNORE_UNUSED); + + u8500_prcmu_hw_clks.hws[PRCMU_PLLSOC1] = + clk_reg_prcmu_gate("soc1_pll", NULL, PRCMU_PLLSOC1, + CLK_IGNORE_UNUSED); + + u8500_prcmu_hw_clks.hws[PRCMU_PLLDDR] = + clk_reg_prcmu_gate("ddr_pll", NULL, PRCMU_PLLDDR, + CLK_IGNORE_UNUSED); + + /* + * Read-only clocks that only return their current rate, only used + * as parents to other clocks and not visible in the device tree. + * clk38m_to_clkgen is the same as the SYSCLK, i.e. the root clock. + */ + clk_reg_prcmu_rate("clk38m_to_clkgen", NULL, PRCMU_SYSCLK, + CLK_IGNORE_UNUSED); + clk_reg_prcmu_rate("aclk", NULL, PRCMU_ACLK, + CLK_IGNORE_UNUSED); + + /* TODO: add CLK009 if needed */ + + rtc_clk = clk_register_fixed_rate(NULL, "rtc32k", "NULL", + CLK_IGNORE_UNUSED, + 32768); + + /* PRCMU clocks */ + fw_version = prcmu_get_fw_version(); + if (fw_version != NULL) { + switch (fw_version->project) { + case PRCMU_FW_PROJECT_U8500_C2: + case PRCMU_FW_PROJECT_U8500_SSG1: + case PRCMU_FW_PROJECT_U8520: + case PRCMU_FW_PROJECT_U8420: + case PRCMU_FW_PROJECT_U8420_SYSCLK: + case PRCMU_FW_PROJECT_U8500_SSG2: + sgaclk_parent = "soc0_pll"; + break; + default: + break; + } + } + + if (sgaclk_parent) + u8500_prcmu_hw_clks.hws[PRCMU_SGACLK] = + clk_reg_prcmu_gate("sgclk", sgaclk_parent, + PRCMU_SGACLK, 0); + else + u8500_prcmu_hw_clks.hws[PRCMU_SGACLK] = + clk_reg_prcmu_gate("sgclk", NULL, PRCMU_SGACLK, 0); + + u8500_prcmu_hw_clks.hws[PRCMU_UARTCLK] = + clk_reg_prcmu_gate("uartclk", NULL, PRCMU_UARTCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_MSP02CLK] = + clk_reg_prcmu_gate("msp02clk", NULL, PRCMU_MSP02CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_MSP1CLK] = + clk_reg_prcmu_gate("msp1clk", NULL, PRCMU_MSP1CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_I2CCLK] = + clk_reg_prcmu_gate("i2cclk", NULL, PRCMU_I2CCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_SLIMCLK] = + clk_reg_prcmu_gate("slimclk", NULL, PRCMU_SLIMCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER1CLK] = + clk_reg_prcmu_gate("per1clk", NULL, PRCMU_PER1CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER2CLK] = + clk_reg_prcmu_gate("per2clk", NULL, PRCMU_PER2CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER3CLK] = + clk_reg_prcmu_gate("per3clk", NULL, PRCMU_PER3CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER5CLK] = + clk_reg_prcmu_gate("per5clk", NULL, PRCMU_PER5CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER6CLK] = + clk_reg_prcmu_gate("per6clk", NULL, PRCMU_PER6CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_PER7CLK] = + clk_reg_prcmu_gate("per7clk", NULL, PRCMU_PER7CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_LCDCLK] = + clk_reg_prcmu_scalable("lcdclk", NULL, PRCMU_LCDCLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_BMLCLK] = + clk_reg_prcmu_opp_gate("bmlclk", NULL, PRCMU_BMLCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_HSITXCLK] = + clk_reg_prcmu_scalable("hsitxclk", NULL, PRCMU_HSITXCLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_HSIRXCLK] = + clk_reg_prcmu_scalable("hsirxclk", NULL, PRCMU_HSIRXCLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_HDMICLK] = + clk_reg_prcmu_scalable("hdmiclk", NULL, PRCMU_HDMICLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_APEATCLK] = + clk_reg_prcmu_gate("apeatclk", NULL, PRCMU_APEATCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_APETRACECLK] = + clk_reg_prcmu_scalable("apetraceclk", NULL, PRCMU_APETRACECLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_MCDECLK] = + clk_reg_prcmu_gate("mcdeclk", NULL, PRCMU_MCDECLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_IPI2CCLK] = + clk_reg_prcmu_opp_gate("ipi2cclk", NULL, PRCMU_IPI2CCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_DSIALTCLK] = + clk_reg_prcmu_gate("dsialtclk", NULL, PRCMU_DSIALTCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_DMACLK] = + clk_reg_prcmu_gate("dmaclk", NULL, PRCMU_DMACLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_B2R2CLK] = + clk_reg_prcmu_gate("b2r2clk", NULL, PRCMU_B2R2CLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_TVCLK] = + clk_reg_prcmu_scalable("tvclk", NULL, PRCMU_TVCLK, 0, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_SSPCLK] = + clk_reg_prcmu_gate("sspclk", NULL, PRCMU_SSPCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_RNGCLK] = + clk_reg_prcmu_gate("rngclk", NULL, PRCMU_RNGCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_UICCCLK] = + clk_reg_prcmu_gate("uiccclk", NULL, PRCMU_UICCCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_TIMCLK] = + clk_reg_prcmu_gate("timclk", NULL, PRCMU_TIMCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_SYSCLK] = + clk_reg_prcmu_gate("ab8500_sysclk", NULL, PRCMU_SYSCLK, 0); + u8500_prcmu_hw_clks.hws[PRCMU_SDMMCCLK] = + clk_reg_prcmu_opp_volt_scalable("sdmmcclk", NULL, + PRCMU_SDMMCCLK, 100000000, + CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_PLLDSI] = + clk_reg_prcmu_scalable("dsi_pll", "hdmiclk", + PRCMU_PLLDSI, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_DSI0CLK] = + clk_reg_prcmu_scalable("dsi0clk", "dsi_pll", + PRCMU_DSI0CLK, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_DSI1CLK] = + clk_reg_prcmu_scalable("dsi1clk", "dsi_pll", + PRCMU_DSI1CLK, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_DSI0ESCCLK] = + clk_reg_prcmu_scalable("dsi0escclk", "tvclk", + PRCMU_DSI0ESCCLK, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_DSI1ESCCLK] = + clk_reg_prcmu_scalable("dsi1escclk", "tvclk", + PRCMU_DSI1ESCCLK, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_DSI2ESCCLK] = + clk_reg_prcmu_scalable("dsi2escclk", "tvclk", + PRCMU_DSI2ESCCLK, 0, CLK_SET_RATE_GATE); + u8500_prcmu_hw_clks.hws[PRCMU_ARMSS] = + clk_reg_prcmu_scalable_rate("armss", NULL, + PRCMU_ARMSS, 0, CLK_IGNORE_UNUSED); + + twd_clk = clk_register_fixed_factor(NULL, "smp_twd", "armss", + CLK_IGNORE_UNUSED, 1, 2); + + /* PRCC P-clocks */ + clk = clk_reg_prcc_pclk("p1_pclk0", "per1clk", bases[CLKRST1_INDEX], + BIT(0), 0); + PRCC_PCLK_STORE(clk, 1, 0); + + clk = clk_reg_prcc_pclk("p1_pclk1", "per1clk", bases[CLKRST1_INDEX], + BIT(1), 0); + PRCC_PCLK_STORE(clk, 1, 1); + + clk = clk_reg_prcc_pclk("p1_pclk2", "per1clk", bases[CLKRST1_INDEX], + BIT(2), 0); + PRCC_PCLK_STORE(clk, 1, 2); + + clk = clk_reg_prcc_pclk("p1_pclk3", "per1clk", bases[CLKRST1_INDEX], + BIT(3), 0); + PRCC_PCLK_STORE(clk, 1, 3); + + clk = clk_reg_prcc_pclk("p1_pclk4", "per1clk", bases[CLKRST1_INDEX], + BIT(4), 0); + PRCC_PCLK_STORE(clk, 1, 4); + + clk = clk_reg_prcc_pclk("p1_pclk5", "per1clk", bases[CLKRST1_INDEX], + BIT(5), 0); + PRCC_PCLK_STORE(clk, 1, 5); + + clk = clk_reg_prcc_pclk("p1_pclk6", "per1clk", bases[CLKRST1_INDEX], + BIT(6), 0); + PRCC_PCLK_STORE(clk, 1, 6); + + clk = clk_reg_prcc_pclk("p1_pclk7", "per1clk", bases[CLKRST1_INDEX], + BIT(7), 0); + PRCC_PCLK_STORE(clk, 1, 7); + + clk = clk_reg_prcc_pclk("p1_pclk8", "per1clk", bases[CLKRST1_INDEX], + BIT(8), 0); + PRCC_PCLK_STORE(clk, 1, 8); + + clk = clk_reg_prcc_pclk("p1_pclk9", "per1clk", bases[CLKRST1_INDEX], + BIT(9), 0); + PRCC_PCLK_STORE(clk, 1, 9); + + clk = clk_reg_prcc_pclk("p1_pclk10", "per1clk", bases[CLKRST1_INDEX], + BIT(10), 0); + PRCC_PCLK_STORE(clk, 1, 10); + + clk = clk_reg_prcc_pclk("p1_pclk11", "per1clk", bases[CLKRST1_INDEX], + BIT(11), 0); + PRCC_PCLK_STORE(clk, 1, 11); + + clk = clk_reg_prcc_pclk("p2_pclk0", "per2clk", bases[CLKRST2_INDEX], + BIT(0), 0); + PRCC_PCLK_STORE(clk, 2, 0); + + clk = clk_reg_prcc_pclk("p2_pclk1", "per2clk", bases[CLKRST2_INDEX], + BIT(1), 0); + PRCC_PCLK_STORE(clk, 2, 1); + + clk = clk_reg_prcc_pclk("p2_pclk2", "per2clk", bases[CLKRST2_INDEX], + BIT(2), 0); + PRCC_PCLK_STORE(clk, 2, 2); + + clk = clk_reg_prcc_pclk("p2_pclk3", "per2clk", bases[CLKRST2_INDEX], + BIT(3), 0); + PRCC_PCLK_STORE(clk, 2, 3); + + clk = clk_reg_prcc_pclk("p2_pclk4", "per2clk", bases[CLKRST2_INDEX], + BIT(4), 0); + PRCC_PCLK_STORE(clk, 2, 4); + + clk = clk_reg_prcc_pclk("p2_pclk5", "per2clk", bases[CLKRST2_INDEX], + BIT(5), 0); + PRCC_PCLK_STORE(clk, 2, 5); + + clk = clk_reg_prcc_pclk("p2_pclk6", "per2clk", bases[CLKRST2_INDEX], + BIT(6), 0); + PRCC_PCLK_STORE(clk, 2, 6); + + clk = clk_reg_prcc_pclk("p2_pclk7", "per2clk", bases[CLKRST2_INDEX], + BIT(7), 0); + PRCC_PCLK_STORE(clk, 2, 7); + + clk = clk_reg_prcc_pclk("p2_pclk8", "per2clk", bases[CLKRST2_INDEX], + BIT(8), 0); + PRCC_PCLK_STORE(clk, 2, 8); + + clk = clk_reg_prcc_pclk("p2_pclk9", "per2clk", bases[CLKRST2_INDEX], + BIT(9), 0); + PRCC_PCLK_STORE(clk, 2, 9); + + clk = clk_reg_prcc_pclk("p2_pclk10", "per2clk", bases[CLKRST2_INDEX], + BIT(10), 0); + PRCC_PCLK_STORE(clk, 2, 10); + + clk = clk_reg_prcc_pclk("p2_pclk11", "per2clk", bases[CLKRST2_INDEX], + BIT(11), 0); + PRCC_PCLK_STORE(clk, 2, 11); + + clk = clk_reg_prcc_pclk("p2_pclk12", "per2clk", bases[CLKRST2_INDEX], + BIT(12), 0); + PRCC_PCLK_STORE(clk, 2, 12); + + clk = clk_reg_prcc_pclk("p3_pclk0", "per3clk", bases[CLKRST3_INDEX], + BIT(0), 0); + PRCC_PCLK_STORE(clk, 3, 0); + + clk = clk_reg_prcc_pclk("p3_pclk1", "per3clk", bases[CLKRST3_INDEX], + BIT(1), 0); + PRCC_PCLK_STORE(clk, 3, 1); + + clk = clk_reg_prcc_pclk("p3_pclk2", "per3clk", bases[CLKRST3_INDEX], + BIT(2), 0); + PRCC_PCLK_STORE(clk, 3, 2); + + clk = clk_reg_prcc_pclk("p3_pclk3", "per3clk", bases[CLKRST3_INDEX], + BIT(3), 0); + PRCC_PCLK_STORE(clk, 3, 3); + + clk = clk_reg_prcc_pclk("p3_pclk4", "per3clk", bases[CLKRST3_INDEX], + BIT(4), 0); + PRCC_PCLK_STORE(clk, 3, 4); + + clk = clk_reg_prcc_pclk("p3_pclk5", "per3clk", bases[CLKRST3_INDEX], + BIT(5), 0); + PRCC_PCLK_STORE(clk, 3, 5); + + clk = clk_reg_prcc_pclk("p3_pclk6", "per3clk", bases[CLKRST3_INDEX], + BIT(6), 0); + PRCC_PCLK_STORE(clk, 3, 6); + + clk = clk_reg_prcc_pclk("p3_pclk7", "per3clk", bases[CLKRST3_INDEX], + BIT(7), 0); + PRCC_PCLK_STORE(clk, 3, 7); + + clk = clk_reg_prcc_pclk("p3_pclk8", "per3clk", bases[CLKRST3_INDEX], + BIT(8), 0); + PRCC_PCLK_STORE(clk, 3, 8); + + clk = clk_reg_prcc_pclk("p5_pclk0", "per5clk", bases[CLKRST5_INDEX], + BIT(0), 0); + PRCC_PCLK_STORE(clk, 5, 0); + + clk = clk_reg_prcc_pclk("p5_pclk1", "per5clk", bases[CLKRST5_INDEX], + BIT(1), 0); + PRCC_PCLK_STORE(clk, 5, 1); + + clk = clk_reg_prcc_pclk("p6_pclk0", "per6clk", bases[CLKRST6_INDEX], + BIT(0), 0); + PRCC_PCLK_STORE(clk, 6, 0); + + clk = clk_reg_prcc_pclk("p6_pclk1", "per6clk", bases[CLKRST6_INDEX], + BIT(1), 0); + PRCC_PCLK_STORE(clk, 6, 1); + + clk = clk_reg_prcc_pclk("p6_pclk2", "per6clk", bases[CLKRST6_INDEX], + BIT(2), 0); + PRCC_PCLK_STORE(clk, 6, 2); + + clk = clk_reg_prcc_pclk("p6_pclk3", "per6clk", bases[CLKRST6_INDEX], + BIT(3), 0); + PRCC_PCLK_STORE(clk, 6, 3); + + clk = clk_reg_prcc_pclk("p6_pclk4", "per6clk", bases[CLKRST6_INDEX], + BIT(4), 0); + PRCC_PCLK_STORE(clk, 6, 4); + + clk = clk_reg_prcc_pclk("p6_pclk5", "per6clk", bases[CLKRST6_INDEX], + BIT(5), 0); + PRCC_PCLK_STORE(clk, 6, 5); + + clk = clk_reg_prcc_pclk("p6_pclk6", "per6clk", bases[CLKRST6_INDEX], + BIT(6), 0); + PRCC_PCLK_STORE(clk, 6, 6); + + clk = clk_reg_prcc_pclk("p6_pclk7", "per6clk", bases[CLKRST6_INDEX], + BIT(7), 0); + PRCC_PCLK_STORE(clk, 6, 7); + + /* PRCC K-clocks + * + * FIXME: Some drivers requires PERPIH[n| to be automatically enabled + * by enabling just the K-clock, even if it is not a valid parent to + * the K-clock. Until drivers get fixed we might need some kind of + * "parent muxed join". + */ + + /* Periph1 */ + clk = clk_reg_prcc_kclk("p1_uart0_kclk", "uartclk", + bases[CLKRST1_INDEX], BIT(0), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 0); + + clk = clk_reg_prcc_kclk("p1_uart1_kclk", "uartclk", + bases[CLKRST1_INDEX], BIT(1), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 1); + + clk = clk_reg_prcc_kclk("p1_i2c1_kclk", "i2cclk", + bases[CLKRST1_INDEX], BIT(2), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 2); + + clk = clk_reg_prcc_kclk("p1_msp0_kclk", "msp02clk", + bases[CLKRST1_INDEX], BIT(3), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 3); + + clk = clk_reg_prcc_kclk("p1_msp1_kclk", "msp1clk", + bases[CLKRST1_INDEX], BIT(4), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 4); + + clk = clk_reg_prcc_kclk("p1_sdi0_kclk", "sdmmcclk", + bases[CLKRST1_INDEX], BIT(5), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 5); + + clk = clk_reg_prcc_kclk("p1_i2c2_kclk", "i2cclk", + bases[CLKRST1_INDEX], BIT(6), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 6); + + clk = clk_reg_prcc_kclk("p1_slimbus0_kclk", "slimclk", + bases[CLKRST1_INDEX], BIT(8), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 8); + + clk = clk_reg_prcc_kclk("p1_i2c4_kclk", "i2cclk", + bases[CLKRST1_INDEX], BIT(9), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 9); + + clk = clk_reg_prcc_kclk("p1_msp3_kclk", "msp1clk", + bases[CLKRST1_INDEX], BIT(10), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 1, 10); + + /* Periph2 */ + clk = clk_reg_prcc_kclk("p2_i2c3_kclk", "i2cclk", + bases[CLKRST2_INDEX], BIT(0), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 2, 0); + + clk = clk_reg_prcc_kclk("p2_sdi4_kclk", "sdmmcclk", + bases[CLKRST2_INDEX], BIT(2), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 2, 2); + + clk = clk_reg_prcc_kclk("p2_msp2_kclk", "msp02clk", + bases[CLKRST2_INDEX], BIT(3), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 2, 3); + + clk = clk_reg_prcc_kclk("p2_sdi1_kclk", "sdmmcclk", + bases[CLKRST2_INDEX], BIT(4), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 2, 4); + + clk = clk_reg_prcc_kclk("p2_sdi3_kclk", "sdmmcclk", + bases[CLKRST2_INDEX], BIT(5), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 2, 5); + + /* Note that rate is received from parent. */ + clk = clk_reg_prcc_kclk("p2_ssirx_kclk", "hsirxclk", + bases[CLKRST2_INDEX], BIT(6), + CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT); + PRCC_KCLK_STORE(clk, 2, 6); + + clk = clk_reg_prcc_kclk("p2_ssitx_kclk", "hsitxclk", + bases[CLKRST2_INDEX], BIT(7), + CLK_SET_RATE_GATE|CLK_SET_RATE_PARENT); + PRCC_KCLK_STORE(clk, 2, 7); + + /* Periph3 */ + clk = clk_reg_prcc_kclk("p3_ssp0_kclk", "sspclk", + bases[CLKRST3_INDEX], BIT(1), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 1); + + clk = clk_reg_prcc_kclk("p3_ssp1_kclk", "sspclk", + bases[CLKRST3_INDEX], BIT(2), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 2); + + clk = clk_reg_prcc_kclk("p3_i2c0_kclk", "i2cclk", + bases[CLKRST3_INDEX], BIT(3), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 3); + + clk = clk_reg_prcc_kclk("p3_sdi2_kclk", "sdmmcclk", + bases[CLKRST3_INDEX], BIT(4), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 4); + + clk = clk_reg_prcc_kclk("p3_ske_kclk", "rtc32k", + bases[CLKRST3_INDEX], BIT(5), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 5); + + clk = clk_reg_prcc_kclk("p3_uart2_kclk", "uartclk", + bases[CLKRST3_INDEX], BIT(6), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 6); + + clk = clk_reg_prcc_kclk("p3_sdi5_kclk", "sdmmcclk", + bases[CLKRST3_INDEX], BIT(7), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 3, 7); + + /* Periph6 */ + clk = clk_reg_prcc_kclk("p3_rng_kclk", "rngclk", + bases[CLKRST6_INDEX], BIT(0), CLK_SET_RATE_GATE); + PRCC_KCLK_STORE(clk, 6, 0); + + for_each_child_of_node(np, child) { + if (of_node_name_eq(child, "prcmu-clock")) + of_clk_add_hw_provider(child, of_clk_hw_onecell_get, + &u8500_prcmu_hw_clks); + + if (of_node_name_eq(child, "clkout-clock")) + of_clk_add_hw_provider(child, ux500_clkout_get, NULL); + + if (of_node_name_eq(child, "prcc-periph-clock")) + of_clk_add_provider(child, ux500_twocell_get, prcc_pclk); + + if (of_node_name_eq(child, "prcc-kernel-clock")) + of_clk_add_provider(child, ux500_twocell_get, prcc_kclk); + + if (of_node_name_eq(child, "rtc32k-clock")) + of_clk_add_provider(child, of_clk_src_simple_get, rtc_clk); + + if (of_node_name_eq(child, "smp-twd-clock")) + of_clk_add_provider(child, of_clk_src_simple_get, twd_clk); + + if (of_node_name_eq(child, "prcc-reset-controller")) + u8500_prcc_reset_init(child, rstc); + } +} +CLK_OF_DECLARE(u8500_clks, "stericsson,u8500-clks", u8500_clk_init); |