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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/pxa/clk-pxa3xx.c | |
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/pxa/clk-pxa3xx.c')
-rw-r--r-- | drivers/clk/pxa/clk-pxa3xx.c | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/drivers/clk/pxa/clk-pxa3xx.c b/drivers/clk/pxa/clk-pxa3xx.c new file mode 100644 index 000000000..42958a542 --- /dev/null +++ b/drivers/clk/pxa/clk-pxa3xx.c @@ -0,0 +1,463 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Marvell PXA3xxx family clocks + * + * Copyright (C) 2014 Robert Jarzmik + * + * Heavily inspired from former arch/arm/mach-pxa/pxa3xx.c + * + * For non-devicetree platforms. Once pxa is fully converted to devicetree, this + * should go away. + */ +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> +#include <linux/of.h> +#include <linux/soc/pxa/cpu.h> +#include <linux/soc/pxa/smemc.h> +#include <linux/clk/pxa.h> + +#include <dt-bindings/clock/pxa-clock.h> +#include "clk-pxa.h" + +#define KHz 1000 +#define MHz (1000 * 1000) + +#define ACCR (0x0000) /* Application Subsystem Clock Configuration Register */ +#define ACSR (0x0004) /* Application Subsystem Clock Status Register */ +#define AICSR (0x0008) /* Application Subsystem Interrupt Control/Status Register */ +#define CKENA (0x000C) /* A Clock Enable Register */ +#define CKENB (0x0010) /* B Clock Enable Register */ +#define CKENC (0x0024) /* C Clock Enable Register */ +#define AC97_DIV (0x0014) /* AC97 clock divisor value register */ + +#define ACCR_XPDIS (1 << 31) /* Core PLL Output Disable */ +#define ACCR_SPDIS (1 << 30) /* System PLL Output Disable */ +#define ACCR_D0CS (1 << 26) /* D0 Mode Clock Select */ +#define ACCR_PCCE (1 << 11) /* Power Mode Change Clock Enable */ +#define ACCR_DDR_D0CS (1 << 7) /* DDR SDRAM clock frequency in D0CS (PXA31x only) */ + +#define ACCR_SMCFS_MASK (0x7 << 23) /* Static Memory Controller Frequency Select */ +#define ACCR_SFLFS_MASK (0x3 << 18) /* Frequency Select for Internal Memory Controller */ +#define ACCR_XSPCLK_MASK (0x3 << 16) /* Core Frequency during Frequency Change */ +#define ACCR_HSS_MASK (0x3 << 14) /* System Bus-Clock Frequency Select */ +#define ACCR_DMCFS_MASK (0x3 << 12) /* Dynamic Memory Controller Clock Frequency Select */ +#define ACCR_XN_MASK (0x7 << 8) /* Core PLL Turbo-Mode-to-Run-Mode Ratio */ +#define ACCR_XL_MASK (0x1f) /* Core PLL Run-Mode-to-Oscillator Ratio */ + +#define ACCR_SMCFS(x) (((x) & 0x7) << 23) +#define ACCR_SFLFS(x) (((x) & 0x3) << 18) +#define ACCR_XSPCLK(x) (((x) & 0x3) << 16) +#define ACCR_HSS(x) (((x) & 0x3) << 14) +#define ACCR_DMCFS(x) (((x) & 0x3) << 12) +#define ACCR_XN(x) (((x) & 0x7) << 8) +#define ACCR_XL(x) ((x) & 0x1f) + +/* + * Clock Enable Bit + */ +#define CKEN_LCD 1 /* < LCD Clock Enable */ +#define CKEN_USBH 2 /* < USB host clock enable */ +#define CKEN_CAMERA 3 /* < Camera interface clock enable */ +#define CKEN_NAND 4 /* < NAND Flash Controller Clock Enable */ +#define CKEN_USB2 6 /* < USB 2.0 client clock enable. */ +#define CKEN_DMC 8 /* < Dynamic Memory Controller clock enable */ +#define CKEN_SMC 9 /* < Static Memory Controller clock enable */ +#define CKEN_ISC 10 /* < Internal SRAM Controller clock enable */ +#define CKEN_BOOT 11 /* < Boot rom clock enable */ +#define CKEN_MMC1 12 /* < MMC1 Clock enable */ +#define CKEN_MMC2 13 /* < MMC2 clock enable */ +#define CKEN_KEYPAD 14 /* < Keypand Controller Clock Enable */ +#define CKEN_CIR 15 /* < Consumer IR Clock Enable */ +#define CKEN_USIM0 17 /* < USIM[0] Clock Enable */ +#define CKEN_USIM1 18 /* < USIM[1] Clock Enable */ +#define CKEN_TPM 19 /* < TPM clock enable */ +#define CKEN_UDC 20 /* < UDC clock enable */ +#define CKEN_BTUART 21 /* < BTUART clock enable */ +#define CKEN_FFUART 22 /* < FFUART clock enable */ +#define CKEN_STUART 23 /* < STUART clock enable */ +#define CKEN_AC97 24 /* < AC97 clock enable */ +#define CKEN_TOUCH 25 /* < Touch screen Interface Clock Enable */ +#define CKEN_SSP1 26 /* < SSP1 clock enable */ +#define CKEN_SSP2 27 /* < SSP2 clock enable */ +#define CKEN_SSP3 28 /* < SSP3 clock enable */ +#define CKEN_SSP4 29 /* < SSP4 clock enable */ +#define CKEN_MSL0 30 /* < MSL0 clock enable */ +#define CKEN_PWM0 32 /* < PWM[0] clock enable */ +#define CKEN_PWM1 33 /* < PWM[1] clock enable */ +#define CKEN_I2C 36 /* < I2C clock enable */ +#define CKEN_INTC 38 /* < Interrupt controller clock enable */ +#define CKEN_GPIO 39 /* < GPIO clock enable */ +#define CKEN_1WIRE 40 /* < 1-wire clock enable */ +#define CKEN_HSIO2 41 /* < HSIO2 clock enable */ +#define CKEN_MINI_IM 48 /* < Mini-IM */ +#define CKEN_MINI_LCD 49 /* < Mini LCD */ + +#define CKEN_MMC3 5 /* < MMC3 Clock Enable */ +#define CKEN_MVED 43 /* < MVED clock enable */ + +/* Note: GCU clock enable bit differs on PXA300/PXA310 and PXA320 */ +#define CKEN_PXA300_GCU 42 /* Graphics controller clock enable */ +#define CKEN_PXA320_GCU 7 /* Graphics controller clock enable */ + + +enum { + PXA_CORE_60Mhz = 0, + PXA_CORE_RUN, + PXA_CORE_TURBO, +}; + +enum { + PXA_BUS_60Mhz = 0, + PXA_BUS_HSS, +}; + +/* crystal frequency to HSIO bus frequency multiplier (HSS) */ +static unsigned char hss_mult[4] = { 8, 12, 16, 24 }; + +/* crystal frequency to static memory controller multiplier (SMCFS) */ +static unsigned int smcfs_mult[8] = { 6, 0, 8, 0, 0, 16, }; +static const char * const get_freq_khz[] = { + "core", "ring_osc_60mhz", "run", "cpll", "system_bus" +}; + +static void __iomem *clk_regs; + +/* + * Get the clock frequency as reflected by ACSR and the turbo flag. + * We assume these values have been applied via a fcs. + * If info is not 0 we also display the current settings. + */ +unsigned int pxa3xx_get_clk_frequency_khz(int info) +{ + struct clk *clk; + unsigned long clks[5]; + int i; + + for (i = 0; i < 5; i++) { + clk = clk_get(NULL, get_freq_khz[i]); + if (IS_ERR(clk)) { + clks[i] = 0; + } else { + clks[i] = clk_get_rate(clk); + clk_put(clk); + } + } + if (info) { + pr_info("RO Mode clock: %ld.%02ldMHz\n", + clks[1] / 1000000, (clks[0] % 1000000) / 10000); + pr_info("Run Mode clock: %ld.%02ldMHz\n", + clks[2] / 1000000, (clks[1] % 1000000) / 10000); + pr_info("Turbo Mode clock: %ld.%02ldMHz\n", + clks[3] / 1000000, (clks[2] % 1000000) / 10000); + pr_info("System bus clock: %ld.%02ldMHz\n", + clks[4] / 1000000, (clks[4] % 1000000) / 10000); + } + return (unsigned int)clks[0] / KHz; +} + +void pxa3xx_clk_update_accr(u32 disable, u32 enable, u32 xclkcfg, u32 mask) +{ + u32 accr = readl(clk_regs + ACCR); + + accr &= ~disable; + accr |= enable; + + writel(accr, ACCR); + if (xclkcfg) + __asm__("mcr p14, 0, %0, c6, c0, 0\n" : : "r"(xclkcfg)); + + while ((readl(clk_regs + ACSR) & mask) != (accr & mask)) + cpu_relax(); +} + +static unsigned long clk_pxa3xx_ac97_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + unsigned long ac97_div, rate; + + ac97_div = readl(clk_regs + AC97_DIV); + + /* This may loose precision for some rates but won't for the + * standard 24.576MHz. + */ + rate = parent_rate / 2; + rate /= ((ac97_div >> 12) & 0x7fff); + rate *= (ac97_div & 0xfff); + + return rate; +} +PARENTS(clk_pxa3xx_ac97) = { "spll_624mhz" }; +RATE_RO_OPS(clk_pxa3xx_ac97, "ac97"); + +static unsigned long clk_pxa3xx_smemc_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + unsigned long acsr = readl(clk_regs + ACSR); + + return (parent_rate / 48) * smcfs_mult[(acsr >> 23) & 0x7] / + pxa3xx_smemc_get_memclkdiv(); + +} +PARENTS(clk_pxa3xx_smemc) = { "spll_624mhz" }; +RATE_RO_OPS(clk_pxa3xx_smemc, "smemc"); + +static bool pxa3xx_is_ring_osc_forced(void) +{ + unsigned long acsr = readl(clk_regs + ACSR); + + return acsr & ACCR_D0CS; +} + +PARENTS(pxa3xx_pbus) = { "ring_osc_60mhz", "spll_624mhz" }; +PARENTS(pxa3xx_32Khz_bus) = { "osc_32_768khz", "osc_32_768khz" }; +PARENTS(pxa3xx_13MHz_bus) = { "osc_13mhz", "osc_13mhz" }; +PARENTS(pxa3xx_ac97_bus) = { "ring_osc_60mhz", "ac97" }; +PARENTS(pxa3xx_sbus) = { "ring_osc_60mhz", "system_bus" }; +PARENTS(pxa3xx_smemcbus) = { "ring_osc_60mhz", "smemc" }; + +#define CKEN_AB(bit) ((CKEN_ ## bit > 31) ? CKENB : CKENA) +#define PXA3XX_CKEN(dev_id, con_id, parents, mult_lp, div_lp, mult_hp, \ + div_hp, bit, is_lp, flags) \ + PXA_CKEN(dev_id, con_id, bit, parents, mult_lp, div_lp, \ + mult_hp, div_hp, is_lp, CKEN_AB(bit), \ + (CKEN_ ## bit % 32), flags) +#define PXA3XX_PBUS_CKEN(dev_id, con_id, bit, mult_lp, div_lp, \ + mult_hp, div_hp, delay) \ + PXA3XX_CKEN(dev_id, con_id, pxa3xx_pbus_parents, mult_lp, \ + div_lp, mult_hp, div_hp, bit, pxa3xx_is_ring_osc_forced, 0) +#define PXA3XX_CKEN_1RATE(dev_id, con_id, bit, parents) \ + PXA_CKEN_1RATE(dev_id, con_id, bit, parents, \ + CKEN_AB(bit), (CKEN_ ## bit % 32), 0) + +static struct desc_clk_cken pxa3xx_clocks[] __initdata = { + PXA3XX_PBUS_CKEN("pxa2xx-uart.0", NULL, FFUART, 1, 4, 1, 42, 1), + PXA3XX_PBUS_CKEN("pxa2xx-uart.1", NULL, BTUART, 1, 4, 1, 42, 1), + PXA3XX_PBUS_CKEN("pxa2xx-uart.2", NULL, STUART, 1, 4, 1, 42, 1), + PXA3XX_PBUS_CKEN("pxa2xx-i2c.0", NULL, I2C, 2, 5, 1, 19, 0), + PXA3XX_PBUS_CKEN("pxa27x-udc", NULL, UDC, 1, 4, 1, 13, 5), + PXA3XX_PBUS_CKEN("pxa27x-ohci", NULL, USBH, 1, 4, 1, 13, 0), + PXA3XX_PBUS_CKEN("pxa3xx-u2d", NULL, USB2, 1, 4, 1, 13, 0), + PXA3XX_PBUS_CKEN("pxa27x-pwm.0", NULL, PWM0, 1, 6, 1, 48, 0), + PXA3XX_PBUS_CKEN("pxa27x-pwm.1", NULL, PWM1, 1, 6, 1, 48, 0), + PXA3XX_PBUS_CKEN("pxa2xx-mci.0", NULL, MMC1, 1, 4, 1, 24, 0), + PXA3XX_PBUS_CKEN("pxa2xx-mci.1", NULL, MMC2, 1, 4, 1, 24, 0), + PXA3XX_PBUS_CKEN("pxa2xx-mci.2", NULL, MMC3, 1, 4, 1, 24, 0), + + PXA3XX_CKEN_1RATE("pxa27x-keypad", NULL, KEYPAD, + pxa3xx_32Khz_bus_parents), + PXA3XX_CKEN_1RATE("pxa3xx-ssp.0", NULL, SSP1, pxa3xx_13MHz_bus_parents), + PXA3XX_CKEN_1RATE("pxa3xx-ssp.1", NULL, SSP2, pxa3xx_13MHz_bus_parents), + PXA3XX_CKEN_1RATE("pxa3xx-ssp.2", NULL, SSP3, pxa3xx_13MHz_bus_parents), + PXA3XX_CKEN_1RATE("pxa3xx-ssp.3", NULL, SSP4, pxa3xx_13MHz_bus_parents), + + PXA3XX_CKEN(NULL, "AC97CLK", pxa3xx_ac97_bus_parents, 1, 4, 1, 1, AC97, + pxa3xx_is_ring_osc_forced, 0), + PXA3XX_CKEN(NULL, "CAMCLK", pxa3xx_sbus_parents, 1, 2, 1, 1, CAMERA, + pxa3xx_is_ring_osc_forced, 0), + PXA3XX_CKEN("pxa2xx-fb", NULL, pxa3xx_sbus_parents, 1, 1, 1, 1, LCD, + pxa3xx_is_ring_osc_forced, 0), + PXA3XX_CKEN("pxa2xx-pcmcia", NULL, pxa3xx_smemcbus_parents, 1, 4, + 1, 1, SMC, pxa3xx_is_ring_osc_forced, CLK_IGNORE_UNUSED), +}; + +static struct desc_clk_cken pxa300_310_clocks[] __initdata = { + + PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA300_GCU, 1, 1, 1, 1, 0), + PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 4, 0), + PXA3XX_CKEN_1RATE("pxa3xx-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents), +}; + +static struct desc_clk_cken pxa320_clocks[] __initdata = { + PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 6, 0), + PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA320_GCU, 1, 1, 1, 1, 0), + PXA3XX_CKEN_1RATE("pxa3xx-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents), +}; + +static struct desc_clk_cken pxa93x_clocks[] __initdata = { + + PXA3XX_PBUS_CKEN("pxa3xx-gcu", NULL, PXA300_GCU, 1, 1, 1, 1, 0), + PXA3XX_PBUS_CKEN("pxa3xx-nand", NULL, NAND, 1, 2, 1, 4, 0), + PXA3XX_CKEN_1RATE("pxa93x-gpio", NULL, GPIO, pxa3xx_13MHz_bus_parents), +}; + +static unsigned long clk_pxa3xx_system_bus_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + unsigned long acsr = readl(clk_regs + ACSR); + unsigned int hss = (acsr >> 14) & 0x3; + + if (pxa3xx_is_ring_osc_forced()) + return parent_rate; + return parent_rate / 48 * hss_mult[hss]; +} + +static u8 clk_pxa3xx_system_bus_get_parent(struct clk_hw *hw) +{ + if (pxa3xx_is_ring_osc_forced()) + return PXA_BUS_60Mhz; + else + return PXA_BUS_HSS; +} + +PARENTS(clk_pxa3xx_system_bus) = { "ring_osc_60mhz", "spll_624mhz" }; +MUX_RO_RATE_RO_OPS(clk_pxa3xx_system_bus, "system_bus"); + +static unsigned long clk_pxa3xx_core_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + return parent_rate; +} + +static u8 clk_pxa3xx_core_get_parent(struct clk_hw *hw) +{ + unsigned long xclkcfg; + unsigned int t; + + if (pxa3xx_is_ring_osc_forced()) + return PXA_CORE_60Mhz; + + /* Read XCLKCFG register turbo bit */ + __asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg)); + t = xclkcfg & 0x1; + + if (t) + return PXA_CORE_TURBO; + return PXA_CORE_RUN; +} +PARENTS(clk_pxa3xx_core) = { "ring_osc_60mhz", "run", "cpll" }; +MUX_RO_RATE_RO_OPS(clk_pxa3xx_core, "core"); + +static unsigned long clk_pxa3xx_run_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + unsigned long acsr = readl(clk_regs + ACSR); + unsigned int xn = (acsr & ACCR_XN_MASK) >> 8; + unsigned int t, xclkcfg; + + /* Read XCLKCFG register turbo bit */ + __asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg)); + t = xclkcfg & 0x1; + + return t ? (parent_rate / xn) * 2 : parent_rate; +} +PARENTS(clk_pxa3xx_run) = { "cpll" }; +RATE_RO_OPS(clk_pxa3xx_run, "run"); + +static unsigned long clk_pxa3xx_cpll_get_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + unsigned long acsr = readl(clk_regs + ACSR); + unsigned int xn = (acsr & ACCR_XN_MASK) >> 8; + unsigned int xl = acsr & ACCR_XL_MASK; + unsigned int t, xclkcfg; + + /* Read XCLKCFG register turbo bit */ + __asm__ __volatile__("mrc\tp14, 0, %0, c6, c0, 0" : "=r"(xclkcfg)); + t = xclkcfg & 0x1; + + pr_info("RJK: parent_rate=%lu, xl=%u, xn=%u\n", parent_rate, xl, xn); + return t ? parent_rate * xl * xn : parent_rate * xl; +} +PARENTS(clk_pxa3xx_cpll) = { "osc_13mhz" }; +RATE_RO_OPS(clk_pxa3xx_cpll, "cpll"); + +static void __init pxa3xx_register_core(void) +{ + clk_register_clk_pxa3xx_cpll(); + clk_register_clk_pxa3xx_run(); + + clkdev_pxa_register(CLK_CORE, "core", NULL, + clk_register_clk_pxa3xx_core()); +} + +static void __init pxa3xx_register_plls(void) +{ + clk_register_fixed_rate(NULL, "osc_13mhz", NULL, + CLK_GET_RATE_NOCACHE, + 13 * MHz); + clkdev_pxa_register(CLK_OSC32k768, "osc_32_768khz", NULL, + clk_register_fixed_rate(NULL, "osc_32_768khz", NULL, + CLK_GET_RATE_NOCACHE, + 32768)); + clk_register_fixed_rate(NULL, "ring_osc_120mhz", NULL, + CLK_GET_RATE_NOCACHE, + 120 * MHz); + clk_register_fixed_rate(NULL, "clk_dummy", NULL, 0, 0); + clk_register_fixed_factor(NULL, "spll_624mhz", "osc_13mhz", 0, 48, 1); + clk_register_fixed_factor(NULL, "ring_osc_60mhz", "ring_osc_120mhz", + 0, 1, 2); +} + +#define DUMMY_CLK(_con_id, _dev_id, _parent) \ + { .con_id = _con_id, .dev_id = _dev_id, .parent = _parent } +struct dummy_clk { + const char *con_id; + const char *dev_id; + const char *parent; +}; +static struct dummy_clk dummy_clks[] __initdata = { + DUMMY_CLK(NULL, "pxa93x-gpio", "osc_13mhz"), + DUMMY_CLK(NULL, "sa1100-rtc", "osc_32_768khz"), + DUMMY_CLK("UARTCLK", "pxa2xx-ir", "STUART"), + DUMMY_CLK(NULL, "pxa3xx-pwri2c.1", "osc_13mhz"), +}; + +static void __init pxa3xx_dummy_clocks_init(void) +{ + struct clk *clk; + struct dummy_clk *d; + const char *name; + int i; + + for (i = 0; i < ARRAY_SIZE(dummy_clks); i++) { + d = &dummy_clks[i]; + name = d->dev_id ? d->dev_id : d->con_id; + clk = clk_register_fixed_factor(NULL, name, d->parent, 0, 1, 1); + clk_register_clkdev(clk, d->con_id, d->dev_id); + } +} + +static void __init pxa3xx_base_clocks_init(void __iomem *oscc_reg) +{ + struct clk *clk; + + pxa3xx_register_plls(); + pxa3xx_register_core(); + clk_register_clk_pxa3xx_system_bus(); + clk_register_clk_pxa3xx_ac97(); + clk_register_clk_pxa3xx_smemc(); + clk = clk_register_gate(NULL, "CLK_POUT", + "osc_13mhz", 0, oscc_reg, 11, 0, NULL); + clk_register_clkdev(clk, "CLK_POUT", NULL); + clkdev_pxa_register(CLK_OSTIMER, "OSTIMER0", NULL, + clk_register_fixed_factor(NULL, "os-timer0", + "osc_13mhz", 0, 1, 4)); +} + +int __init pxa3xx_clocks_init(void __iomem *regs, void __iomem *oscc_reg) +{ + int ret; + + clk_regs = regs; + pxa3xx_base_clocks_init(oscc_reg); + pxa3xx_dummy_clocks_init(); + ret = clk_pxa_cken_init(pxa3xx_clocks, ARRAY_SIZE(pxa3xx_clocks), regs); + if (ret) + return ret; + if (cpu_is_pxa320()) + return clk_pxa_cken_init(pxa320_clocks, + ARRAY_SIZE(pxa320_clocks), regs); + if (cpu_is_pxa300() || cpu_is_pxa310()) + return clk_pxa_cken_init(pxa300_310_clocks, + ARRAY_SIZE(pxa300_310_clocks), regs); + return clk_pxa_cken_init(pxa93x_clocks, ARRAY_SIZE(pxa93x_clocks), regs); +} + +static void __init pxa3xx_dt_clocks_init(struct device_node *np) +{ + pxa3xx_clocks_init(ioremap(0x41340000, 0x10), ioremap(0x41350000, 4)); + clk_pxa_dt_common_init(np); +} +CLK_OF_DECLARE(pxa_clks, "marvell,pxa300-clocks", pxa3xx_dt_clocks_init); |