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, 477 insertions, 0 deletions

diff --git a/drivers/mmc/host/sdhci-cadence.c b/drivers/mmc/host/sdhci-cadence.c
new file mode 100644
index 000000000..6f2de54a5
--- /dev/null
+++ b/drivers/mmc/host/sdhci-cadence.c
@@ -0,0 +1,477 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2016 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include "sdhci-pltfm.h"
+
+/* HRS - Host Register Set (specific to Cadence) */
+#define SDHCI_CDNS_HRS04		0x10		/* PHY access port */
+#define   SDHCI_CDNS_HRS04_ACK			BIT(26)
+#define   SDHCI_CDNS_HRS04_RD			BIT(25)
+#define   SDHCI_CDNS_HRS04_WR			BIT(24)
+#define   SDHCI_CDNS_HRS04_RDATA		GENMASK(23, 16)
+#define   SDHCI_CDNS_HRS04_WDATA		GENMASK(15, 8)
+#define   SDHCI_CDNS_HRS04_ADDR			GENMASK(5, 0)
+
+#define SDHCI_CDNS_HRS06		0x18		/* eMMC control */
+#define   SDHCI_CDNS_HRS06_TUNE_UP		BIT(15)
+#define   SDHCI_CDNS_HRS06_TUNE			GENMASK(13, 8)
+#define   SDHCI_CDNS_HRS06_MODE			GENMASK(2, 0)
+#define   SDHCI_CDNS_HRS06_MODE_SD		0x0
+#define   SDHCI_CDNS_HRS06_MODE_MMC_SDR		0x2
+#define   SDHCI_CDNS_HRS06_MODE_MMC_DDR		0x3
+#define   SDHCI_CDNS_HRS06_MODE_MMC_HS200	0x4
+#define   SDHCI_CDNS_HRS06_MODE_MMC_HS400	0x5
+#define   SDHCI_CDNS_HRS06_MODE_MMC_HS400ES	0x6
+
+/* SRS - Slot Register Set (SDHCI-compatible) */
+#define SDHCI_CDNS_SRS_BASE		0x200
+
+/* PHY */
+#define SDHCI_CDNS_PHY_DLY_SD_HS	0x00
+#define SDHCI_CDNS_PHY_DLY_SD_DEFAULT	0x01
+#define SDHCI_CDNS_PHY_DLY_UHS_SDR12	0x02
+#define SDHCI_CDNS_PHY_DLY_UHS_SDR25	0x03
+#define SDHCI_CDNS_PHY_DLY_UHS_SDR50	0x04
+#define SDHCI_CDNS_PHY_DLY_UHS_DDR50	0x05
+#define SDHCI_CDNS_PHY_DLY_EMMC_LEGACY	0x06
+#define SDHCI_CDNS_PHY_DLY_EMMC_SDR	0x07
+#define SDHCI_CDNS_PHY_DLY_EMMC_DDR	0x08
+#define SDHCI_CDNS_PHY_DLY_SDCLK	0x0b
+#define SDHCI_CDNS_PHY_DLY_HSMMC	0x0c
+#define SDHCI_CDNS_PHY_DLY_STROBE	0x0d
+
+/*
+ * The tuned val register is 6 bit-wide, but not the whole of the range is
+ * available.  The range 0-42 seems to be available (then 43 wraps around to 0)
+ * but I am not quite sure if it is official.  Use only 0 to 39 for safety.
+ */
+#define SDHCI_CDNS_MAX_TUNING_LOOP	40
+
+struct sdhci_cdns_phy_param {
+	u8 addr;
+	u8 data;
+};
+
+struct sdhci_cdns_priv {
+	void __iomem *hrs_addr;
+	bool enhanced_strobe;
+	unsigned int nr_phy_params;
+	struct sdhci_cdns_phy_param phy_params[];
+};
+
+struct sdhci_cdns_phy_cfg {
+	const char *property;
+	u8 addr;
+};
+
+static const struct sdhci_cdns_phy_cfg sdhci_cdns_phy_cfgs[] = {
+	{ "cdns,phy-input-delay-sd-highspeed", SDHCI_CDNS_PHY_DLY_SD_HS, },
+	{ "cdns,phy-input-delay-legacy", SDHCI_CDNS_PHY_DLY_SD_DEFAULT, },
+	{ "cdns,phy-input-delay-sd-uhs-sdr12", SDHCI_CDNS_PHY_DLY_UHS_SDR12, },
+	{ "cdns,phy-input-delay-sd-uhs-sdr25", SDHCI_CDNS_PHY_DLY_UHS_SDR25, },
+	{ "cdns,phy-input-delay-sd-uhs-sdr50", SDHCI_CDNS_PHY_DLY_UHS_SDR50, },
+	{ "cdns,phy-input-delay-sd-uhs-ddr50", SDHCI_CDNS_PHY_DLY_UHS_DDR50, },
+	{ "cdns,phy-input-delay-mmc-highspeed", SDHCI_CDNS_PHY_DLY_EMMC_SDR, },
+	{ "cdns,phy-input-delay-mmc-ddr", SDHCI_CDNS_PHY_DLY_EMMC_DDR, },
+	{ "cdns,phy-dll-delay-sdclk", SDHCI_CDNS_PHY_DLY_SDCLK, },
+	{ "cdns,phy-dll-delay-sdclk-hsmmc", SDHCI_CDNS_PHY_DLY_HSMMC, },
+	{ "cdns,phy-dll-delay-strobe", SDHCI_CDNS_PHY_DLY_STROBE, },
+};
+
+static int sdhci_cdns_write_phy_reg(struct sdhci_cdns_priv *priv,
+				    u8 addr, u8 data)
+{
+	void __iomem *reg = priv->hrs_addr + SDHCI_CDNS_HRS04;
+	u32 tmp;
+	int ret;
+
+	ret = readl_poll_timeout(reg, tmp, !(tmp & SDHCI_CDNS_HRS04_ACK),
+				 0, 10);
+	if (ret)
+		return ret;
+
+	tmp = FIELD_PREP(SDHCI_CDNS_HRS04_WDATA, data) |
+	      FIELD_PREP(SDHCI_CDNS_HRS04_ADDR, addr);
+	writel(tmp, reg);
+
+	tmp |= SDHCI_CDNS_HRS04_WR;
+	writel(tmp, reg);
+
+	ret = readl_poll_timeout(reg, tmp, tmp & SDHCI_CDNS_HRS04_ACK, 0, 10);
+	if (ret)
+		return ret;
+
+	tmp &= ~SDHCI_CDNS_HRS04_WR;
+	writel(tmp, reg);
+
+	ret = readl_poll_timeout(reg, tmp, !(tmp & SDHCI_CDNS_HRS04_ACK),
+				 0, 10);
+
+	return ret;
+}
+
+static unsigned int sdhci_cdns_phy_param_count(struct device_node *np)
+{
+	unsigned int count = 0;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sdhci_cdns_phy_cfgs); i++)
+		if (of_property_read_bool(np, sdhci_cdns_phy_cfgs[i].property))
+			count++;
+
+	return count;
+}
+
+static void sdhci_cdns_phy_param_parse(struct device_node *np,
+				       struct sdhci_cdns_priv *priv)
+{
+	struct sdhci_cdns_phy_param *p = priv->phy_params;
+	u32 val;
+	int ret, i;
+
+	for (i = 0; i < ARRAY_SIZE(sdhci_cdns_phy_cfgs); i++) {
+		ret = of_property_read_u32(np, sdhci_cdns_phy_cfgs[i].property,
+					   &val);
+		if (ret)
+			continue;
+
+		p->addr = sdhci_cdns_phy_cfgs[i].addr;
+		p->data = val;
+		p++;
+	}
+}
+
+static int sdhci_cdns_phy_init(struct sdhci_cdns_priv *priv)
+{
+	int ret, i;
+
+	for (i = 0; i < priv->nr_phy_params; i++) {
+		ret = sdhci_cdns_write_phy_reg(priv, priv->phy_params[i].addr,
+					       priv->phy_params[i].data);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void *sdhci_cdns_priv(struct sdhci_host *host)
+{
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+
+	return sdhci_pltfm_priv(pltfm_host);
+}
+
+static unsigned int sdhci_cdns_get_timeout_clock(struct sdhci_host *host)
+{
+	/*
+	 * Cadence's spec says the Timeout Clock Frequency is the same as the
+	 * Base Clock Frequency.
+	 */
+	return host->max_clk;
+}
+
+static void sdhci_cdns_set_emmc_mode(struct sdhci_cdns_priv *priv, u32 mode)
+{
+	u32 tmp;
+
+	/* The speed mode for eMMC is selected by HRS06 register */
+	tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06);
+	tmp &= ~SDHCI_CDNS_HRS06_MODE;
+	tmp |= FIELD_PREP(SDHCI_CDNS_HRS06_MODE, mode);
+	writel(tmp, priv->hrs_addr + SDHCI_CDNS_HRS06);
+}
+
+static u32 sdhci_cdns_get_emmc_mode(struct sdhci_cdns_priv *priv)
+{
+	u32 tmp;
+
+	tmp = readl(priv->hrs_addr + SDHCI_CDNS_HRS06);
+	return FIELD_GET(SDHCI_CDNS_HRS06_MODE, tmp);
+}
+
+static int sdhci_cdns_set_tune_val(struct sdhci_host *host, unsigned int val)
+{
+	struct sdhci_cdns_priv *priv = sdhci_cdns_priv(host);
+	void __iomem *reg = priv->hrs_addr + SDHCI_CDNS_HRS06;
+	u32 tmp;
+	int i, ret;
+
+	if (WARN_ON(!FIELD_FIT(SDHCI_CDNS_HRS06_TUNE, val)))
+		return -EINVAL;
+
+	tmp = readl(reg);
+	tmp &= ~SDHCI_CDNS_HRS06_TUNE;
+	tmp |= FIELD_PREP(SDHCI_CDNS_HRS06_TUNE, val);
+
+	/*
+	 * Workaround for IP errata:
+	 * The IP6116 SD/eMMC PHY design has a timing issue on receive data
+	 * path. Send tune request twice.
+	 */
+	for (i = 0; i < 2; i++) {
+		tmp |= SDHCI_CDNS_HRS06_TUNE_UP;
+		writel(tmp, reg);
+
+		ret = readl_poll_timeout(reg, tmp,
+					 !(tmp & SDHCI_CDNS_HRS06_TUNE_UP),
+					 0, 1);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+/*
+ * In SD mode, software must not use the hardware tuning and instead perform
+ * an almost identical procedure to eMMC.
+ */
+static int sdhci_cdns_execute_tuning(struct sdhci_host *host, u32 opcode)
+{
+	int cur_streak = 0;
+	int max_streak = 0;
+	int end_of_streak = 0;
+	int i;
+
+	/*
+	 * Do not execute tuning for UHS_SDR50 or UHS_DDR50.
+	 * The delay is set by probe, based on the DT properties.
+	 */
+	if (host->timing != MMC_TIMING_MMC_HS200 &&
+	    host->timing != MMC_TIMING_UHS_SDR104)
+		return 0;
+
+	for (i = 0; i < SDHCI_CDNS_MAX_TUNING_LOOP; i++) {
+		if (sdhci_cdns_set_tune_val(host, i) ||
+		    mmc_send_tuning(host->mmc, opcode, NULL)) { /* bad */
+			cur_streak = 0;
+		} else { /* good */
+			cur_streak++;
+			if (cur_streak > max_streak) {
+				max_streak = cur_streak;
+				end_of_streak = i;
+			}
+		}
+	}
+
+	if (!max_streak) {
+		dev_err(mmc_dev(host->mmc), "no tuning point found\n");
+		return -EIO;
+	}
+
+	return sdhci_cdns_set_tune_val(host, end_of_streak - max_streak / 2);
+}
+
+static void sdhci_cdns_set_uhs_signaling(struct sdhci_host *host,
+					 unsigned int timing)
+{
+	struct sdhci_cdns_priv *priv = sdhci_cdns_priv(host);
+	u32 mode;
+
+	switch (timing) {
+	case MMC_TIMING_MMC_HS:
+		mode = SDHCI_CDNS_HRS06_MODE_MMC_SDR;
+		break;
+	case MMC_TIMING_MMC_DDR52:
+		mode = SDHCI_CDNS_HRS06_MODE_MMC_DDR;
+		break;
+	case MMC_TIMING_MMC_HS200:
+		mode = SDHCI_CDNS_HRS06_MODE_MMC_HS200;
+		break;
+	case MMC_TIMING_MMC_HS400:
+		if (priv->enhanced_strobe)
+			mode = SDHCI_CDNS_HRS06_MODE_MMC_HS400ES;
+		else
+			mode = SDHCI_CDNS_HRS06_MODE_MMC_HS400;
+		break;
+	default:
+		mode = SDHCI_CDNS_HRS06_MODE_SD;
+		break;
+	}
+
+	sdhci_cdns_set_emmc_mode(priv, mode);
+
+	/* For SD, fall back to the default handler */
+	if (mode == SDHCI_CDNS_HRS06_MODE_SD)
+		sdhci_set_uhs_signaling(host, timing);
+}
+
+static const struct sdhci_ops sdhci_cdns_ops = {
+	.set_clock = sdhci_set_clock,
+	.get_timeout_clock = sdhci_cdns_get_timeout_clock,
+	.set_bus_width = sdhci_set_bus_width,
+	.reset = sdhci_reset,
+	.platform_execute_tuning = sdhci_cdns_execute_tuning,
+	.set_uhs_signaling = sdhci_cdns_set_uhs_signaling,
+};
+
+static const struct sdhci_pltfm_data sdhci_cdns_uniphier_pltfm_data = {
+	.ops = &sdhci_cdns_ops,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+};
+
+static const struct sdhci_pltfm_data sdhci_cdns_pltfm_data = {
+	.ops = &sdhci_cdns_ops,
+};
+
+static void sdhci_cdns_hs400_enhanced_strobe(struct mmc_host *mmc,
+					     struct mmc_ios *ios)
+{
+	struct sdhci_host *host = mmc_priv(mmc);
+	struct sdhci_cdns_priv *priv = sdhci_cdns_priv(host);
+	u32 mode;
+
+	priv->enhanced_strobe = ios->enhanced_strobe;
+
+	mode = sdhci_cdns_get_emmc_mode(priv);
+
+	if (mode == SDHCI_CDNS_HRS06_MODE_MMC_HS400 && ios->enhanced_strobe)
+		sdhci_cdns_set_emmc_mode(priv,
+					 SDHCI_CDNS_HRS06_MODE_MMC_HS400ES);
+
+	if (mode == SDHCI_CDNS_HRS06_MODE_MMC_HS400ES && !ios->enhanced_strobe)
+		sdhci_cdns_set_emmc_mode(priv,
+					 SDHCI_CDNS_HRS06_MODE_MMC_HS400);
+}
+
+static int sdhci_cdns_probe(struct platform_device *pdev)
+{
+	struct sdhci_host *host;
+	const struct sdhci_pltfm_data *data;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct sdhci_cdns_priv *priv;
+	struct clk *clk;
+	unsigned int nr_phy_params;
+	int ret;
+	struct device *dev = &pdev->dev;
+	static const u16 version = SDHCI_SPEC_400 << SDHCI_SPEC_VER_SHIFT;
+
+	clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	ret = clk_prepare_enable(clk);
+	if (ret)
+		return ret;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		data = &sdhci_cdns_pltfm_data;
+
+	nr_phy_params = sdhci_cdns_phy_param_count(dev->of_node);
+	host = sdhci_pltfm_init(pdev, data,
+				struct_size(priv, phy_params, nr_phy_params));
+	if (IS_ERR(host)) {
+		ret = PTR_ERR(host);
+		goto disable_clk;
+	}
+
+	pltfm_host = sdhci_priv(host);
+	pltfm_host->clk = clk;
+
+	priv = sdhci_pltfm_priv(pltfm_host);
+	priv->nr_phy_params = nr_phy_params;
+	priv->hrs_addr = host->ioaddr;
+	priv->enhanced_strobe = false;
+	host->ioaddr += SDHCI_CDNS_SRS_BASE;
+	host->mmc_host_ops.hs400_enhanced_strobe =
+				sdhci_cdns_hs400_enhanced_strobe;
+	sdhci_enable_v4_mode(host);
+	__sdhci_read_caps(host, &version, NULL, NULL);
+
+	sdhci_get_of_property(pdev);
+
+	ret = mmc_of_parse(host->mmc);
+	if (ret)
+		goto free;
+
+	sdhci_cdns_phy_param_parse(dev->of_node, priv);
+
+	ret = sdhci_cdns_phy_init(priv);
+	if (ret)
+		goto free;
+
+	ret = sdhci_add_host(host);
+	if (ret)
+		goto free;
+
+	return 0;
+free:
+	sdhci_pltfm_free(pdev);
+disable_clk:
+	clk_disable_unprepare(clk);
+
+	return ret;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_cdns_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_cdns_priv *priv = sdhci_pltfm_priv(pltfm_host);
+	int ret;
+
+	ret = clk_prepare_enable(pltfm_host->clk);
+	if (ret)
+		return ret;
+
+	ret = sdhci_cdns_phy_init(priv);
+	if (ret)
+		goto disable_clk;
+
+	ret = sdhci_resume_host(host);
+	if (ret)
+		goto disable_clk;
+
+	return 0;
+
+disable_clk:
+	clk_disable_unprepare(pltfm_host->clk);
+
+	return ret;
+}
+#endif
+
+static const struct dev_pm_ops sdhci_cdns_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_pltfm_suspend, sdhci_cdns_resume)
+};
+
+static const struct of_device_id sdhci_cdns_match[] = {
+	{
+		.compatible = "socionext,uniphier-sd4hc",
+		.data = &sdhci_cdns_uniphier_pltfm_data,
+	},
+	{ .compatible = "cdns,sd4hc" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, sdhci_cdns_match);
+
+static struct platform_driver sdhci_cdns_driver = {
+	.driver = {
+		.name = "sdhci-cdns",
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+		.pm = &sdhci_cdns_pm_ops,
+		.of_match_table = sdhci_cdns_match,
+	},
+	.probe = sdhci_cdns_probe,
+	.remove = sdhci_pltfm_unregister,
+};
+module_platform_driver(sdhci_cdns_driver);
+
+MODULE_AUTHOR("Masahiro Yamada <yamada.masahiro@socionext.com>");
+MODULE_DESCRIPTION("Cadence SD/SDIO/eMMC Host Controller Driver");
+MODULE_LICENSE("GPL");