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().
  ...

1 files changed, 554 insertions, 0 deletions

diff --git a/drivers/soc/imx/gpc.c b/drivers/soc/imx/gpc.c
new file mode 100644
index 000000000..90a8b2c06
--- /dev/null
+++ b/drivers/soc/imx/gpc.c
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2015-2017 Pengutronix, Lucas Stach <kernel@pengutronix.de>
+ * Copyright 2011-2013 Freescale Semiconductor, Inc.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#define GPC_CNTR		0x000
+
+#define GPC_PGC_CTRL_OFFS	0x0
+#define GPC_PGC_PUPSCR_OFFS	0x4
+#define GPC_PGC_PDNSCR_OFFS	0x8
+#define GPC_PGC_SW2ISO_SHIFT	0x8
+#define GPC_PGC_SW_SHIFT	0x0
+
+#define GPC_PGC_PCI_PDN		0x200
+#define GPC_PGC_PCI_SR		0x20c
+
+#define GPC_PGC_GPU_PDN		0x260
+#define GPC_PGC_GPU_PUPSCR	0x264
+#define GPC_PGC_GPU_PDNSCR	0x268
+#define GPC_PGC_GPU_SR		0x26c
+
+#define GPC_PGC_DISP_PDN	0x240
+#define GPC_PGC_DISP_SR		0x24c
+
+#define GPU_VPU_PUP_REQ		BIT(1)
+#define GPU_VPU_PDN_REQ		BIT(0)
+
+#define GPC_CLK_MAX		7
+
+#define PGC_DOMAIN_FLAG_NO_PD		BIT(0)
+
+struct imx_pm_domain {
+	struct generic_pm_domain base;
+	struct regmap *regmap;
+	struct regulator *supply;
+	struct clk *clk[GPC_CLK_MAX];
+	int num_clks;
+	unsigned int reg_offs;
+	signed char cntr_pdn_bit;
+	unsigned int ipg_rate_mhz;
+};
+
+static inline struct imx_pm_domain *
+to_imx_pm_domain(struct generic_pm_domain *genpd)
+{
+	return container_of(genpd, struct imx_pm_domain, base);
+}
+
+static int imx6_pm_domain_power_off(struct generic_pm_domain *genpd)
+{
+	struct imx_pm_domain *pd = to_imx_pm_domain(genpd);
+	int iso, iso2sw;
+	u32 val;
+
+	/* Read ISO and ISO2SW power down delays */
+	regmap_read(pd->regmap, pd->reg_offs + GPC_PGC_PDNSCR_OFFS, &val);
+	iso = val & 0x3f;
+	iso2sw = (val >> 8) & 0x3f;
+
+	/* Gate off domain when powered down */
+	regmap_update_bits(pd->regmap, pd->reg_offs + GPC_PGC_CTRL_OFFS,
+			   0x1, 0x1);
+
+	/* Request GPC to power down domain */
+	val = BIT(pd->cntr_pdn_bit);
+	regmap_update_bits(pd->regmap, GPC_CNTR, val, val);
+
+	/* Wait ISO + ISO2SW IPG clock cycles */
+	udelay(DIV_ROUND_UP(iso + iso2sw, pd->ipg_rate_mhz));
+
+	if (pd->supply)
+		regulator_disable(pd->supply);
+
+	return 0;
+}
+
+static int imx6_pm_domain_power_on(struct generic_pm_domain *genpd)
+{
+	struct imx_pm_domain *pd = to_imx_pm_domain(genpd);
+	int i, ret;
+	u32 val, req;
+
+	if (pd->supply) {
+		ret = regulator_enable(pd->supply);
+		if (ret) {
+			pr_err("%s: failed to enable regulator: %d\n",
+			       __func__, ret);
+			return ret;
+		}
+	}
+
+	/* Enable reset clocks for all devices in the domain */
+	for (i = 0; i < pd->num_clks; i++)
+		clk_prepare_enable(pd->clk[i]);
+
+	/* Gate off domain when powered down */
+	regmap_update_bits(pd->regmap, pd->reg_offs + GPC_PGC_CTRL_OFFS,
+			   0x1, 0x1);
+
+	/* Request GPC to power up domain */
+	req = BIT(pd->cntr_pdn_bit + 1);
+	regmap_update_bits(pd->regmap, GPC_CNTR, req, req);
+
+	/* Wait for the PGC to handle the request */
+	ret = regmap_read_poll_timeout(pd->regmap, GPC_CNTR, val, !(val & req),
+				       1, 50);
+	if (ret)
+		pr_err("powerup request on domain %s timed out\n", genpd->name);
+
+	/* Wait for reset to propagate through peripherals */
+	usleep_range(5, 10);
+
+	/* Disable reset clocks for all devices in the domain */
+	for (i = 0; i < pd->num_clks; i++)
+		clk_disable_unprepare(pd->clk[i]);
+
+	return 0;
+}
+
+static int imx_pgc_get_clocks(struct device *dev, struct imx_pm_domain *domain)
+{
+	int i, ret;
+
+	for (i = 0; ; i++) {
+		struct clk *clk = of_clk_get(dev->of_node, i);
+		if (IS_ERR(clk))
+			break;
+		if (i >= GPC_CLK_MAX) {
+			dev_err(dev, "more than %d clocks\n", GPC_CLK_MAX);
+			ret = -EINVAL;
+			goto clk_err;
+		}
+		domain->clk[i] = clk;
+	}
+	domain->num_clks = i;
+
+	return 0;
+
+clk_err:
+	while (i--)
+		clk_put(domain->clk[i]);
+
+	return ret;
+}
+
+static void imx_pgc_put_clocks(struct imx_pm_domain *domain)
+{
+	int i;
+
+	for (i = domain->num_clks - 1; i >= 0; i--)
+		clk_put(domain->clk[i]);
+}
+
+static int imx_pgc_parse_dt(struct device *dev, struct imx_pm_domain *domain)
+{
+	/* try to get the domain supply regulator */
+	domain->supply = devm_regulator_get_optional(dev, "power");
+	if (IS_ERR(domain->supply)) {
+		if (PTR_ERR(domain->supply) == -ENODEV)
+			domain->supply = NULL;
+		else
+			return PTR_ERR(domain->supply);
+	}
+
+	/* try to get all clocks needed for reset propagation */
+	return imx_pgc_get_clocks(dev, domain);
+}
+
+static int imx_pgc_power_domain_probe(struct platform_device *pdev)
+{
+	struct imx_pm_domain *domain = pdev->dev.platform_data;
+	struct device *dev = &pdev->dev;
+	int ret;
+
+	/* if this PD is associated with a DT node try to parse it */
+	if (dev->of_node) {
+		ret = imx_pgc_parse_dt(dev, domain);
+		if (ret)
+			return ret;
+	}
+
+	/* initially power on the domain */
+	if (domain->base.power_on)
+		domain->base.power_on(&domain->base);
+
+	if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
+		pm_genpd_init(&domain->base, NULL, false);
+		ret = of_genpd_add_provider_simple(dev->of_node, &domain->base);
+		if (ret)
+			goto genpd_err;
+	}
+
+	device_link_add(dev, dev->parent, DL_FLAG_AUTOREMOVE_CONSUMER);
+
+	return 0;
+
+genpd_err:
+	pm_genpd_remove(&domain->base);
+	imx_pgc_put_clocks(domain);
+
+	return ret;
+}
+
+static int imx_pgc_power_domain_remove(struct platform_device *pdev)
+{
+	struct imx_pm_domain *domain = pdev->dev.platform_data;
+
+	if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
+		of_genpd_del_provider(pdev->dev.of_node);
+		pm_genpd_remove(&domain->base);
+		imx_pgc_put_clocks(domain);
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id imx_pgc_power_domain_id[] = {
+	{ "imx-pgc-power-domain"},
+	{ },
+};
+
+static struct platform_driver imx_pgc_power_domain_driver = {
+	.driver = {
+		.name = "imx-pgc-pd",
+	},
+	.probe = imx_pgc_power_domain_probe,
+	.remove = imx_pgc_power_domain_remove,
+	.id_table = imx_pgc_power_domain_id,
+};
+builtin_platform_driver(imx_pgc_power_domain_driver)
+
+#define GPC_PGC_DOMAIN_ARM	0
+#define GPC_PGC_DOMAIN_PU	1
+#define GPC_PGC_DOMAIN_DISPLAY	2
+#define GPC_PGC_DOMAIN_PCI	3
+
+static struct genpd_power_state imx6_pm_domain_pu_state = {
+	.power_off_latency_ns = 25000,
+	.power_on_latency_ns = 2000000,
+};
+
+static struct imx_pm_domain imx_gpc_domains[] = {
+	[GPC_PGC_DOMAIN_ARM] = {
+		.base = {
+			.name = "ARM",
+			.flags = GENPD_FLAG_ALWAYS_ON,
+		},
+	},
+	[GPC_PGC_DOMAIN_PU] = {
+		.base = {
+			.name = "PU",
+			.power_off = imx6_pm_domain_power_off,
+			.power_on = imx6_pm_domain_power_on,
+			.states = &imx6_pm_domain_pu_state,
+			.state_count = 1,
+		},
+		.reg_offs = 0x260,
+		.cntr_pdn_bit = 0,
+	},
+	[GPC_PGC_DOMAIN_DISPLAY] = {
+		.base = {
+			.name = "DISPLAY",
+			.power_off = imx6_pm_domain_power_off,
+			.power_on = imx6_pm_domain_power_on,
+		},
+		.reg_offs = 0x240,
+		.cntr_pdn_bit = 4,
+	},
+	[GPC_PGC_DOMAIN_PCI] = {
+		.base = {
+			.name = "PCI",
+			.power_off = imx6_pm_domain_power_off,
+			.power_on = imx6_pm_domain_power_on,
+		},
+		.reg_offs = 0x200,
+		.cntr_pdn_bit = 6,
+	},
+};
+
+struct imx_gpc_dt_data {
+	int num_domains;
+	bool err009619_present;
+	bool err006287_present;
+};
+
+static const struct imx_gpc_dt_data imx6q_dt_data = {
+	.num_domains = 2,
+	.err009619_present = false,
+	.err006287_present = false,
+};
+
+static const struct imx_gpc_dt_data imx6qp_dt_data = {
+	.num_domains = 2,
+	.err009619_present = true,
+	.err006287_present = false,
+};
+
+static const struct imx_gpc_dt_data imx6sl_dt_data = {
+	.num_domains = 3,
+	.err009619_present = false,
+	.err006287_present = true,
+};
+
+static const struct imx_gpc_dt_data imx6sx_dt_data = {
+	.num_domains = 4,
+	.err009619_present = false,
+	.err006287_present = false,
+};
+
+static const struct of_device_id imx_gpc_dt_ids[] = {
+	{ .compatible = "fsl,imx6q-gpc", .data = &imx6q_dt_data },
+	{ .compatible = "fsl,imx6qp-gpc", .data = &imx6qp_dt_data },
+	{ .compatible = "fsl,imx6sl-gpc", .data = &imx6sl_dt_data },
+	{ .compatible = "fsl,imx6sx-gpc", .data = &imx6sx_dt_data },
+	{ }
+};
+
+static const struct regmap_range yes_ranges[] = {
+	regmap_reg_range(GPC_CNTR, GPC_CNTR),
+	regmap_reg_range(GPC_PGC_PCI_PDN, GPC_PGC_PCI_SR),
+	regmap_reg_range(GPC_PGC_GPU_PDN, GPC_PGC_GPU_SR),
+	regmap_reg_range(GPC_PGC_DISP_PDN, GPC_PGC_DISP_SR),
+};
+
+static const struct regmap_access_table access_table = {
+	.yes_ranges	= yes_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(yes_ranges),
+};
+
+static const struct regmap_config imx_gpc_regmap_config = {
+	.reg_bits = 32,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.rd_table = &access_table,
+	.wr_table = &access_table,
+	.max_register = 0x2ac,
+	.fast_io = true,
+};
+
+static struct generic_pm_domain *imx_gpc_onecell_domains[] = {
+	&imx_gpc_domains[GPC_PGC_DOMAIN_ARM].base,
+	&imx_gpc_domains[GPC_PGC_DOMAIN_PU].base,
+};
+
+static struct genpd_onecell_data imx_gpc_onecell_data = {
+	.domains = imx_gpc_onecell_domains,
+	.num_domains = 2,
+};
+
+static int imx_gpc_old_dt_init(struct device *dev, struct regmap *regmap,
+			       unsigned int num_domains)
+{
+	struct imx_pm_domain *domain;
+	int i, ret;
+
+	for (i = 0; i < num_domains; i++) {
+		domain = &imx_gpc_domains[i];
+		domain->regmap = regmap;
+		domain->ipg_rate_mhz = 66;
+
+		if (i == 1) {
+			domain->supply = devm_regulator_get(dev, "pu");
+			if (IS_ERR(domain->supply))
+				return PTR_ERR(domain->supply);
+
+			ret = imx_pgc_get_clocks(dev, domain);
+			if (ret)
+				goto clk_err;
+
+			domain->base.power_on(&domain->base);
+		}
+	}
+
+	for (i = 0; i < num_domains; i++)
+		pm_genpd_init(&imx_gpc_domains[i].base, NULL, false);
+
+	if (IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) {
+		ret = of_genpd_add_provider_onecell(dev->of_node,
+						    &imx_gpc_onecell_data);
+		if (ret)
+			goto genpd_err;
+	}
+
+	return 0;
+
+genpd_err:
+	for (i = 0; i < num_domains; i++)
+		pm_genpd_remove(&imx_gpc_domains[i].base);
+	imx_pgc_put_clocks(&imx_gpc_domains[GPC_PGC_DOMAIN_PU]);
+clk_err:
+	return ret;
+}
+
+static int imx_gpc_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *of_id =
+			of_match_device(imx_gpc_dt_ids, &pdev->dev);
+	const struct imx_gpc_dt_data *of_id_data = of_id->data;
+	struct device_node *pgc_node;
+	struct regmap *regmap;
+	void __iomem *base;
+	int ret;
+
+	pgc_node = of_get_child_by_name(pdev->dev.of_node, "pgc");
+
+	/* bail out if DT too old and doesn't provide the necessary info */
+	if (!of_property_read_bool(pdev->dev.of_node, "#power-domain-cells") &&
+	    !pgc_node)
+		return 0;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base,
+					   &imx_gpc_regmap_config);
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		dev_err(&pdev->dev, "failed to init regmap: %d\n",
+			ret);
+		return ret;
+	}
+
+	/*
+	 * Disable PU power down by runtime PM if ERR009619 is present.
+	 *
+	 * The PRE clock will be paused for several cycles when turning on the
+	 * PU domain LDO from power down state. If PRE is in use at that time,
+	 * the IPU/PRG cannot get the correct display data from the PRE.
+	 *
+	 * This is not a concern when the whole system enters suspend state, so
+	 * it's safe to power down PU in this case.
+	 */
+	if (of_id_data->err009619_present)
+		imx_gpc_domains[GPC_PGC_DOMAIN_PU].base.flags |=
+				GENPD_FLAG_RPM_ALWAYS_ON;
+
+	/* Keep DISP always on if ERR006287 is present */
+	if (of_id_data->err006287_present)
+		imx_gpc_domains[GPC_PGC_DOMAIN_DISPLAY].base.flags |=
+				GENPD_FLAG_ALWAYS_ON;
+
+	if (!pgc_node) {
+		ret = imx_gpc_old_dt_init(&pdev->dev, regmap,
+					  of_id_data->num_domains);
+		if (ret)
+			return ret;
+	} else {
+		struct imx_pm_domain *domain;
+		struct platform_device *pd_pdev;
+		struct device_node *np;
+		struct clk *ipg_clk;
+		unsigned int ipg_rate_mhz;
+		int domain_index;
+
+		ipg_clk = devm_clk_get(&pdev->dev, "ipg");
+		if (IS_ERR(ipg_clk))
+			return PTR_ERR(ipg_clk);
+		ipg_rate_mhz = clk_get_rate(ipg_clk) / 1000000;
+
+		for_each_child_of_node(pgc_node, np) {
+			ret = of_property_read_u32(np, "reg", &domain_index);
+			if (ret) {
+				of_node_put(np);
+				return ret;
+			}
+			if (domain_index >= of_id_data->num_domains)
+				continue;
+
+			pd_pdev = platform_device_alloc("imx-pgc-power-domain",
+							domain_index);
+			if (!pd_pdev) {
+				of_node_put(np);
+				return -ENOMEM;
+			}
+
+			ret = platform_device_add_data(pd_pdev,
+						       &imx_gpc_domains[domain_index],
+						       sizeof(imx_gpc_domains[domain_index]));
+			if (ret) {
+				platform_device_put(pd_pdev);
+				of_node_put(np);
+				return ret;
+			}
+			domain = pd_pdev->dev.platform_data;
+			domain->regmap = regmap;
+			domain->ipg_rate_mhz = ipg_rate_mhz;
+
+			pd_pdev->dev.parent = &pdev->dev;
+			pd_pdev->dev.of_node = np;
+
+			ret = platform_device_add(pd_pdev);
+			if (ret) {
+				platform_device_put(pd_pdev);
+				of_node_put(np);
+				return ret;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int imx_gpc_remove(struct platform_device *pdev)
+{
+	struct device_node *pgc_node;
+	int ret;
+
+	pgc_node = of_get_child_by_name(pdev->dev.of_node, "pgc");
+
+	/* bail out if DT too old and doesn't provide the necessary info */
+	if (!of_property_read_bool(pdev->dev.of_node, "#power-domain-cells") &&
+	    !pgc_node)
+		return 0;
+
+	/*
+	 * If the old DT binding is used the toplevel driver needs to
+	 * de-register the power domains
+	 */
+	if (!pgc_node) {
+		of_genpd_del_provider(pdev->dev.of_node);
+
+		ret = pm_genpd_remove(&imx_gpc_domains[GPC_PGC_DOMAIN_PU].base);
+		if (ret)
+			return ret;
+		imx_pgc_put_clocks(&imx_gpc_domains[GPC_PGC_DOMAIN_PU]);
+
+		ret = pm_genpd_remove(&imx_gpc_domains[GPC_PGC_DOMAIN_ARM].base);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static struct platform_driver imx_gpc_driver = {
+	.driver = {
+		.name = "imx-gpc",
+		.of_match_table = imx_gpc_dt_ids,
+	},
+	.probe = imx_gpc_probe,
+	.remove = imx_gpc_remove,
+};
+builtin_platform_driver(imx_gpc_driver)