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, 450 insertions, 0 deletions

diff --git a/drivers/phy/freescale/phy-fsl-imx8qm-lvds-phy.c b/drivers/phy/freescale/phy-fsl-imx8qm-lvds-phy.c
new file mode 100644
index 000000000..e514b64bf
--- /dev/null
+++ b/drivers/phy/freescale/phy-fsl-imx8qm-lvds-phy.c
@@ -0,0 +1,450 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2017-2020,2022 NXP
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+#define REG_SET		0x4
+#define REG_CLR		0x8
+
+#define PHY_CTRL	0x0
+#define  M_MASK		GENMASK(18, 17)
+#define  M(n)		FIELD_PREP(M_MASK, (n))
+#define  CCM_MASK	GENMASK(16, 14)
+#define  CCM(n)		FIELD_PREP(CCM_MASK, (n))
+#define  CA_MASK	GENMASK(13, 11)
+#define  CA(n)		FIELD_PREP(CA_MASK, (n))
+#define  TST_MASK	GENMASK(10, 5)
+#define  TST(n)		FIELD_PREP(TST_MASK, (n))
+#define  CH_EN(id)	BIT(3 + (id))
+#define  NB		BIT(2)
+#define  RFB		BIT(1)
+#define  PD		BIT(0)
+
+/* Power On Reset(POR) value */
+#define  CTRL_RESET_VAL	(M(0x0) | CCM(0x4) | CA(0x4) | TST(0x25))
+
+/* PHY initialization value and mask */
+#define  CTRL_INIT_MASK	(M_MASK | CCM_MASK | CA_MASK | TST_MASK | NB | RFB)
+#define  CTRL_INIT_VAL	(M(0x0) | CCM(0x5) | CA(0x4) | TST(0x25) | RFB)
+
+#define PHY_STATUS	0x10
+#define  LOCK		BIT(0)
+
+#define PHY_NUM		2
+
+#define MIN_CLKIN_FREQ	(25 * MEGA)
+#define MAX_CLKIN_FREQ	(165 * MEGA)
+
+#define PLL_LOCK_SLEEP		10
+#define PLL_LOCK_TIMEOUT	1000
+
+struct mixel_lvds_phy {
+	struct phy *phy;
+	struct phy_configure_opts_lvds cfg;
+	unsigned int id;
+};
+
+struct mixel_lvds_phy_priv {
+	struct regmap *regmap;
+	struct mutex lock;	/* protect remap access and cfg of our own */
+	struct clk *phy_ref_clk;
+	struct mixel_lvds_phy *phys[PHY_NUM];
+};
+
+static int mixel_lvds_phy_init(struct phy *phy)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(phy->dev.parent);
+
+	mutex_lock(&priv->lock);
+	regmap_update_bits(priv->regmap,
+			   PHY_CTRL, CTRL_INIT_MASK, CTRL_INIT_VAL);
+	mutex_unlock(&priv->lock);
+
+	return 0;
+}
+
+static int mixel_lvds_phy_power_on(struct phy *phy)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(phy->dev.parent);
+	struct mixel_lvds_phy *lvds_phy = phy_get_drvdata(phy);
+	struct mixel_lvds_phy *companion = priv->phys[lvds_phy->id ^ 1];
+	struct phy_configure_opts_lvds *cfg = &lvds_phy->cfg;
+	u32 val = 0;
+	u32 locked;
+	int ret;
+
+	/* The master PHY would power on the slave PHY. */
+	if (cfg->is_slave)
+		return 0;
+
+	ret = clk_prepare_enable(priv->phy_ref_clk);
+	if (ret < 0) {
+		dev_err(&phy->dev,
+			"failed to enable PHY reference clock: %d\n", ret);
+		return ret;
+	}
+
+	mutex_lock(&priv->lock);
+	if (cfg->bits_per_lane_and_dclk_cycle == 7) {
+		if (cfg->differential_clk_rate < 44000000)
+			val |= M(0x2);
+		else if (cfg->differential_clk_rate < 90000000)
+			val |= M(0x1);
+		else
+			val |= M(0x0);
+	} else {
+		val = NB;
+
+		if (cfg->differential_clk_rate < 32000000)
+			val |= M(0x2);
+		else if (cfg->differential_clk_rate < 63000000)
+			val |= M(0x1);
+		else
+			val |= M(0x0);
+	}
+	regmap_update_bits(priv->regmap, PHY_CTRL, M_MASK | NB, val);
+
+	/*
+	 * Enable two channels synchronously,
+	 * if the companion PHY is a slave PHY.
+	 */
+	if (companion->cfg.is_slave)
+		val = CH_EN(0) | CH_EN(1);
+	else
+		val = CH_EN(lvds_phy->id);
+	regmap_write(priv->regmap, PHY_CTRL + REG_SET, val);
+
+	ret = regmap_read_poll_timeout(priv->regmap, PHY_STATUS, locked,
+				       locked, PLL_LOCK_SLEEP,
+				       PLL_LOCK_TIMEOUT);
+	if (ret < 0) {
+		dev_err(&phy->dev, "failed to get PHY lock: %d\n", ret);
+		clk_disable_unprepare(priv->phy_ref_clk);
+	}
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
+static int mixel_lvds_phy_power_off(struct phy *phy)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(phy->dev.parent);
+	struct mixel_lvds_phy *lvds_phy = phy_get_drvdata(phy);
+	struct mixel_lvds_phy *companion = priv->phys[lvds_phy->id ^ 1];
+	struct phy_configure_opts_lvds *cfg = &lvds_phy->cfg;
+
+	/* The master PHY would power off the slave PHY. */
+	if (cfg->is_slave)
+		return 0;
+
+	mutex_lock(&priv->lock);
+	if (companion->cfg.is_slave)
+		regmap_write(priv->regmap, PHY_CTRL + REG_CLR,
+			     CH_EN(0) | CH_EN(1));
+	else
+		regmap_write(priv->regmap, PHY_CTRL + REG_CLR,
+			     CH_EN(lvds_phy->id));
+	mutex_unlock(&priv->lock);
+
+	clk_disable_unprepare(priv->phy_ref_clk);
+
+	return 0;
+}
+
+static int mixel_lvds_phy_configure(struct phy *phy,
+				    union phy_configure_opts *opts)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(phy->dev.parent);
+	struct phy_configure_opts_lvds *cfg = &opts->lvds;
+	int ret;
+
+	ret = clk_set_rate(priv->phy_ref_clk, cfg->differential_clk_rate);
+	if (ret)
+		dev_err(&phy->dev, "failed to set PHY reference clock rate(%lu): %d\n",
+			cfg->differential_clk_rate, ret);
+
+	return ret;
+}
+
+/* Assume the master PHY's configuration set is cached first. */
+static int mixel_lvds_phy_check_slave(struct phy *slave_phy)
+{
+	struct device *dev = &slave_phy->dev;
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(dev->parent);
+	struct mixel_lvds_phy *slv = phy_get_drvdata(slave_phy);
+	struct mixel_lvds_phy *mst = priv->phys[slv->id ^ 1];
+	struct phy_configure_opts_lvds *mst_cfg = &mst->cfg;
+	struct phy_configure_opts_lvds *slv_cfg = &slv->cfg;
+
+	if (mst_cfg->bits_per_lane_and_dclk_cycle !=
+	    slv_cfg->bits_per_lane_and_dclk_cycle) {
+		dev_err(dev, "number bits mismatch(mst: %u vs slv: %u)\n",
+			mst_cfg->bits_per_lane_and_dclk_cycle,
+			slv_cfg->bits_per_lane_and_dclk_cycle);
+		return -EINVAL;
+	}
+
+	if (mst_cfg->differential_clk_rate !=
+	    slv_cfg->differential_clk_rate) {
+		dev_err(dev, "dclk rate mismatch(mst: %lu vs slv: %lu)\n",
+			mst_cfg->differential_clk_rate,
+			slv_cfg->differential_clk_rate);
+		return -EINVAL;
+	}
+
+	if (mst_cfg->lanes != slv_cfg->lanes) {
+		dev_err(dev, "lanes mismatch(mst: %u vs slv: %u)\n",
+			mst_cfg->lanes, slv_cfg->lanes);
+		return -EINVAL;
+	}
+
+	if (mst_cfg->is_slave == slv_cfg->is_slave) {
+		dev_err(dev, "master PHY is not found\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int mixel_lvds_phy_validate(struct phy *phy, enum phy_mode mode,
+				   int submode, union phy_configure_opts *opts)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(phy->dev.parent);
+	struct mixel_lvds_phy *lvds_phy = phy_get_drvdata(phy);
+	struct phy_configure_opts_lvds *cfg = &opts->lvds;
+	int ret = 0;
+
+	if (mode != PHY_MODE_LVDS) {
+		dev_err(&phy->dev, "invalid PHY mode(%d)\n", mode);
+		return -EINVAL;
+	}
+
+	if (cfg->bits_per_lane_and_dclk_cycle != 7 &&
+	    cfg->bits_per_lane_and_dclk_cycle != 10) {
+		dev_err(&phy->dev, "invalid bits per data lane(%u)\n",
+			cfg->bits_per_lane_and_dclk_cycle);
+		return -EINVAL;
+	}
+
+	if (cfg->lanes != 4 && cfg->lanes != 3) {
+		dev_err(&phy->dev, "invalid data lanes(%u)\n", cfg->lanes);
+		return -EINVAL;
+	}
+
+	if (cfg->differential_clk_rate < MIN_CLKIN_FREQ ||
+	    cfg->differential_clk_rate > MAX_CLKIN_FREQ) {
+		dev_err(&phy->dev, "invalid differential clock rate(%lu)\n",
+			cfg->differential_clk_rate);
+		return -EINVAL;
+	}
+
+	mutex_lock(&priv->lock);
+	/* cache configuration set of our own for check */
+	memcpy(&lvds_phy->cfg, cfg, sizeof(*cfg));
+
+	if (cfg->is_slave) {
+		ret = mixel_lvds_phy_check_slave(phy);
+		if (ret)
+			dev_err(&phy->dev, "failed to check slave PHY: %d\n", ret);
+	}
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
+static const struct phy_ops mixel_lvds_phy_ops = {
+	.init = mixel_lvds_phy_init,
+	.power_on = mixel_lvds_phy_power_on,
+	.power_off = mixel_lvds_phy_power_off,
+	.configure = mixel_lvds_phy_configure,
+	.validate = mixel_lvds_phy_validate,
+	.owner = THIS_MODULE,
+};
+
+static int mixel_lvds_phy_reset(struct device *dev)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(dev);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0) {
+		dev_err(dev, "failed to get PM runtime: %d\n", ret);
+		return ret;
+	}
+
+	regmap_write(priv->regmap, PHY_CTRL, CTRL_RESET_VAL);
+
+	ret = pm_runtime_put(dev);
+	if (ret < 0)
+		dev_err(dev, "failed to put PM runtime: %d\n", ret);
+
+	return ret;
+}
+
+static struct phy *mixel_lvds_phy_xlate(struct device *dev,
+					struct of_phandle_args *args)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(dev);
+	unsigned int phy_id;
+
+	if (args->args_count != 1) {
+		dev_err(dev,
+			"invalid argument number(%d) for 'phys' property\n",
+			args->args_count);
+		return ERR_PTR(-EINVAL);
+	}
+
+	phy_id = args->args[0];
+
+	if (phy_id >= PHY_NUM) {
+		dev_err(dev, "invalid PHY index(%d)\n", phy_id);
+		return ERR_PTR(-ENODEV);
+	}
+
+	return priv->phys[phy_id]->phy;
+}
+
+static int mixel_lvds_phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct phy_provider *phy_provider;
+	struct mixel_lvds_phy_priv *priv;
+	struct mixel_lvds_phy *lvds_phy;
+	struct phy *phy;
+	int i;
+	int ret;
+
+	if (!dev->of_node)
+		return -ENODEV;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->regmap = syscon_node_to_regmap(dev->of_node->parent);
+	if (IS_ERR(priv->regmap))
+		return dev_err_probe(dev, PTR_ERR(priv->regmap),
+				     "failed to get regmap\n");
+
+	priv->phy_ref_clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(priv->phy_ref_clk))
+		return dev_err_probe(dev, PTR_ERR(priv->phy_ref_clk),
+				     "failed to get PHY reference clock\n");
+
+	mutex_init(&priv->lock);
+
+	dev_set_drvdata(dev, priv);
+
+	pm_runtime_enable(dev);
+
+	ret = mixel_lvds_phy_reset(dev);
+	if (ret) {
+		dev_err(dev, "failed to do POR reset: %d\n", ret);
+		return ret;
+	}
+
+	for (i = 0; i < PHY_NUM; i++) {
+		lvds_phy = devm_kzalloc(dev, sizeof(*lvds_phy), GFP_KERNEL);
+		if (!lvds_phy) {
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		phy = devm_phy_create(dev, NULL, &mixel_lvds_phy_ops);
+		if (IS_ERR(phy)) {
+			ret = PTR_ERR(phy);
+			dev_err(dev, "failed to create PHY for channel%d: %d\n",
+				i, ret);
+			goto err;
+		}
+
+		lvds_phy->phy = phy;
+		lvds_phy->id = i;
+		priv->phys[i] = lvds_phy;
+
+		phy_set_drvdata(phy, lvds_phy);
+	}
+
+	phy_provider = devm_of_phy_provider_register(dev, mixel_lvds_phy_xlate);
+	if (IS_ERR(phy_provider)) {
+		ret = PTR_ERR(phy_provider);
+		dev_err(dev, "failed to register PHY provider: %d\n", ret);
+		goto err;
+	}
+
+	return 0;
+err:
+	pm_runtime_disable(dev);
+
+	return ret;
+}
+
+static int mixel_lvds_phy_remove(struct platform_device *pdev)
+{
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static int __maybe_unused mixel_lvds_phy_runtime_suspend(struct device *dev)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(dev);
+
+	/* power down */
+	mutex_lock(&priv->lock);
+	regmap_write(priv->regmap, PHY_CTRL + REG_SET, PD);
+	mutex_unlock(&priv->lock);
+
+	return 0;
+}
+
+static int __maybe_unused mixel_lvds_phy_runtime_resume(struct device *dev)
+{
+	struct mixel_lvds_phy_priv *priv = dev_get_drvdata(dev);
+
+	/* power up + control initialization */
+	mutex_lock(&priv->lock);
+	regmap_update_bits(priv->regmap, PHY_CTRL,
+			   CTRL_INIT_MASK | PD, CTRL_INIT_VAL);
+	mutex_unlock(&priv->lock);
+
+	return 0;
+}
+
+static const struct dev_pm_ops mixel_lvds_phy_pm_ops = {
+	SET_RUNTIME_PM_OPS(mixel_lvds_phy_runtime_suspend,
+			   mixel_lvds_phy_runtime_resume, NULL)
+};
+
+static const struct of_device_id mixel_lvds_phy_of_match[] = {
+	{ .compatible = "fsl,imx8qm-lvds-phy" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mixel_lvds_phy_of_match);
+
+static struct platform_driver mixel_lvds_phy_driver = {
+	.probe	= mixel_lvds_phy_probe,
+	.remove	= mixel_lvds_phy_remove,
+	.driver = {
+		.pm = &mixel_lvds_phy_pm_ops,
+		.name = "mixel-lvds-phy",
+		.of_match_table	= mixel_lvds_phy_of_match,
+	}
+};
+module_platform_driver(mixel_lvds_phy_driver);
+
+MODULE_DESCRIPTION("Mixel LVDS PHY driver");
+MODULE_AUTHOR("Liu Ying <victor.liu@nxp.com>");
+MODULE_LICENSE("GPL");