Merge tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:

   - Add a new host cap bit and a corresponding DT property, to support
     power cycling of the card by FW at system suspend/resume.

   - Fix clock rate setting for SDIO in SDR12/SDR25 speed-mode

   - Fix switch to 1/4-bit mode at system suspend/resume for SD-combo
     cards

   - Convert the mmc-pwrseq DT bindings to the json-schema

   - Always allow the card detect uevent to be consumed by userspace

  MMC host controllers:

   - Convert a few DT bindings to the json-schema

   - mtk-sd:
      - Add support for command queue through cqhci
      - Add support for the MT6779 variant

   - renesas_sdhi_internal_dmac:
      - Fix dma unmapping in the error path

   - sdhci_am654:
      - Add support for the AM65x PG2.0 variant
      - Extend support for phys/clocks

   - sdhci-cadence:
      - Drop incorrect HW tuning for SD mode

   - sdhci-msm:
      - Add support for interconnect bandwidth scaling
      - Enable internal voltage control
      - Enable low power state for pinctrls

   - sdhci-of-at91:
      - Ludovic Desroches handovers maintenance to Eugen Hristev

   - sdhci-pci-gli:
      - Improve clock handling for GL975x

   - sdhci-pci-o2micro:
      - Add HW tuning for SDR104 mode
      - Fix support for O2 host controller Seabird1"

* tag 'mmc-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (66 commits)
  mmc: mediatek: make function msdc_cqe_disable() static
  MAINTAINERS: mmc: sdhci-of-at91: handover maintenance to Eugen Hristev
  dt-bindings: mmc: mediatek: Add document for mt6779
  mmc: mediatek: command queue support
  mmc: mediatek: refine msdc timeout api
  mmc: mediatek: add MT6779 MMC driver support
  mmc: sdhci-pci-o2micro: Add HW tuning for SDR104 mode
  mmc: sdhci-pci-o2micro: Bug fix for O2 host controller Seabird1
  mmc: via-sdmmc: use generic power management
  memstick: jmb38x_ms: use generic power management
  mmc: sdhci-cadence: do not use hardware tuning for SD mode
  mmc: sdhci-pci-gli: Set SDR104's clock to 205MHz and enable SSC for GL975x
  mmc: cqhci: Fix a print format for the task descriptor
  mmc: sdhci-of-arasan: fix timings allocation code
  mmc: sdhci: Fix a potential uninitialized variable
  dt-bindings: mmc: renesas,sdhi: convert to YAML
  dt-bindings: mmc: convert arasan sdhci bindings to yaml
  mmc: sdhci: Fix potential null pointer access while accessing vqmmc
  mmc: core: Add MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND
  dt-bindings: mmc: Add full-pwr-cycle-in-suspend property
  ...

34 files changed, 968 insertions, 209 deletions

diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8d2b808e9b58..8ccae6452b9c 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -1455,12 +1455,12 @@ void mmc_detach_bus(struct mmc_host *host)
 void _mmc_detect_change(struct mmc_host *host, unsigned long delay, bool cd_irq)
 {
 	/*
-	 * If the device is configured as wakeup, we prevent a new sleep for
-	 * 5 s to give provision for user space to consume the event.
+	 * Prevent system sleep for 5s to allow user space to consume the
+	 * corresponding uevent. This is especially useful, when CD irq is used
+	 * as a system wakeup, but doesn't hurt in other cases.
 	 */
-	if (cd_irq && !(host->caps & MMC_CAP_NEEDS_POLL) &&
-		device_can_wakeup(mmc_dev(host)))
-		pm_wakeup_event(mmc_dev(host), 5000);
+	if (cd_irq && !(host->caps & MMC_CAP_NEEDS_POLL))
+		__pm_wakeup_event(host->ws, 5000);
 
 	host->detect_change = 1;
 	mmc_schedule_delayed_work(&host->detect, delay);
@@ -2303,7 +2303,6 @@ void mmc_start_host(struct mmc_host *host)
 {
 	host->f_init = max(min(freqs[0], host->f_max), host->f_min);
 	host->rescan_disable = 0;
-	host->ios.power_mode = MMC_POWER_UNDEFINED;
 
 	if (!(host->caps2 & MMC_CAP2_NO_PRESCAN_POWERUP)) {
 		mmc_claim_host(host);
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index c8768726d925..ce43f7573d80 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -15,6 +15,7 @@
 #include <linux/of.h>
 #include <linux/of_gpio.h>
 #include <linux/pagemap.h>
+#include <linux/pm_wakeup.h>
 #include <linux/export.h>
 #include <linux/leds.h>
 #include <linux/slab.h>
@@ -36,6 +37,7 @@ static DEFINE_IDA(mmc_host_ida);
 static void mmc_host_classdev_release(struct device *dev)
 {
 	struct mmc_host *host = cls_dev_to_mmc_host(dev);
+	wakeup_source_unregister(host->ws);
 	ida_simple_remove(&mmc_host_ida, host->index);
 	kfree(host);
 }
@@ -275,6 +277,8 @@ int mmc_of_parse(struct mmc_host *host)
 		host->caps |= MMC_CAP_SDIO_IRQ;
 	if (device_property_read_bool(dev, "full-pwr-cycle"))
 		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE;
+	if (device_property_read_bool(dev, "full-pwr-cycle-in-suspend"))
+		host->caps2 |= MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND;
 	if (device_property_read_bool(dev, "keep-power-in-suspend"))
 		host->pm_caps |= MMC_PM_KEEP_POWER;
 	if (device_property_read_bool(dev, "wakeup-source") ||
@@ -400,6 +404,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 	host->index = err;
 
 	dev_set_name(&host->class_dev, "mmc%d", host->index);
+	host->ws = wakeup_source_register(NULL, dev_name(&host->class_dev));
 
 	host->parent = dev;
 	host->class_dev.parent = dev;
@@ -431,6 +436,7 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
 
 	host->fixed_drv_type = -EINVAL;
 	host->ios.power_delay_ms = 10;
+	host->ios.power_mode = MMC_POWER_UNDEFINED;
 
 	return host;
 }
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 4203303f946a..b3fa193de846 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -2038,7 +2038,8 @@ static int _mmc_suspend(struct mmc_host *host, bool is_suspend)
 		goto out;
 
 	if (mmc_can_poweroff_notify(host->card) &&
-		((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend))
+	    ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend ||
+	     (host->caps2 & MMC_CAP2_FULL_PWR_CYCLE_IN_SUSPEND)))
 		err = mmc_poweroff_notify(host->card, notify_type);
 	else if (mmc_can_sleep(host->card))
 		err = mmc_sleep(host);
diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index 4b1eb89b401d..6c022ef0f84d 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -203,7 +203,7 @@ static unsigned int mmc_get_max_segments(struct mmc_host *host)
 
 /**
  * mmc_init_request() - initialize the MMC-specific per-request data
- * @q: the request queue
+ * @mq: the request queue
  * @req: the request
  * @gfp: memory allocation policy
  */
diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 472fa2fdcf13..d68e6e513a4f 100644
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -14,7 +14,7 @@
 
 #include "card.h"
 
-static const struct mmc_fixup mmc_blk_fixups[] = {
+static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
 #define INAND_CMD38_ARG_EXT_CSD  113
 #define INAND_CMD38_ARG_ERASE    0x00
 #define INAND_CMD38_ARG_TRIM     0x01
@@ -102,7 +102,7 @@ static const struct mmc_fixup mmc_blk_fixups[] = {
 	END_FIXUP
 };
 
-static const struct mmc_fixup mmc_ext_csd_fixups[] = {
+static const struct mmc_fixup __maybe_unused mmc_ext_csd_fixups[] = {
 	/*
 	 * Certain Hynix eMMC 4.41 cards might get broken when HPI feature
 	 * is used so disable the HPI feature for such buggy cards.
@@ -120,7 +120,7 @@ static const struct mmc_fixup mmc_ext_csd_fixups[] = {
 };
 
 
-static const struct mmc_fixup sdio_fixup_methods[] = {
+static const struct mmc_fixup __maybe_unused sdio_fixup_methods[] = {
 	SDIO_FIXUP(SDIO_VENDOR_ID_TI_WL1251, SDIO_DEVICE_ID_TI_WL1251,
 		   add_quirk, MMC_QUIRK_NONSTD_FUNC_IF),
 
diff --git a/drivers/mmc/core/regulator.c b/drivers/mmc/core/regulator.c
index 96b1d15045d6..609201a467ef 100644
--- a/drivers/mmc/core/regulator.c
+++ b/drivers/mmc/core/regulator.c
@@ -159,6 +159,8 @@ static int mmc_regulator_set_voltage_if_supported(struct regulator *regulator,
 
 /**
  * mmc_regulator_set_vqmmc - Set VQMMC as per the ios
+ * @mmc: the host to regulate
+ * @ios: io bus settings
  *
  * For 3.3V signaling, we try to match VQMMC to VMMC as closely as possible.
  * That will match the behavior of old boards where VQMMC and VMMC were supplied
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index b65b26f76d71..7b40553d3934 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -176,15 +176,18 @@ static int sdio_read_cccr(struct mmc_card *card, u32 ocr)
 			if (mmc_host_uhs(card->host)) {
 				if (data & SDIO_UHS_DDR50)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_DDR50;
+						|= SD_MODE_UHS_DDR50 | SD_MODE_UHS_SDR50
+							| SD_MODE_UHS_SDR25 | SD_MODE_UHS_SDR12;
 
 				if (data & SDIO_UHS_SDR50)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_SDR50;
+						|= SD_MODE_UHS_SDR50 | SD_MODE_UHS_SDR25
+							| SD_MODE_UHS_SDR12;
 
 				if (data & SDIO_UHS_SDR104)
 					card->sw_caps.sd3_bus_mode
-						|= SD_MODE_UHS_SDR104;
+						|= SD_MODE_UHS_SDR104 | SD_MODE_UHS_SDR50
+							| SD_MODE_UHS_SDR25 | SD_MODE_UHS_SDR12;
 			}
 
 			ret = mmc_io_rw_direct(card, 0, 0,
@@ -303,30 +306,49 @@ static int sdio_disable_wide(struct mmc_card *card)
 	return 0;
 }
 
+static int sdio_disable_4bit_bus(struct mmc_card *card)
+{
+	int err;
+
+	if (card->type == MMC_TYPE_SDIO)
+		goto out;
+
+	if (!(card->host->caps & MMC_CAP_4_BIT_DATA))
+		return 0;
+
+	if (!(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4))
+		return 0;
+
+	err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1);
+	if (err)
+		return err;
+
+out:
+	return sdio_disable_wide(card);
+}
+
 
 static int sdio_enable_4bit_bus(struct mmc_card *card)
 {
 	int err;
 
+	err = sdio_enable_wide(card);
+	if (err <= 0)
+		return err;
 	if (card->type == MMC_TYPE_SDIO)
-		err = sdio_enable_wide(card);
-	else if ((card->host->caps & MMC_CAP_4_BIT_DATA) &&
-		 (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
+		goto out;
+
+	if (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4) {
 		err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
-		if (err)
+		if (err) {
+			sdio_disable_wide(card);
 			return err;
-		err = sdio_enable_wide(card);
-		if (err <= 0)
-			mmc_app_set_bus_width(card, MMC_BUS_WIDTH_1);
-	} else
-		return 0;
-
-	if (err > 0) {
-		mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
-		err = 0;
+		}
 	}
+out:
+	mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
 
-	return err;
+	return 0;
 }
 
 
@@ -518,10 +540,8 @@ static int sdio_set_bus_speed_mode(struct mmc_card *card)
 	max_rate = min_not_zero(card->quirk_max_rate,
 				card->sw_caps.uhs_max_dtr);
 
-	if (bus_speed) {
-		mmc_set_timing(card->host, timing);
-		mmc_set_clock(card->host, max_rate);
-	}
+	mmc_set_timing(card->host, timing);
+	mmc_set_clock(card->host, max_rate);
 
 	return 0;
 }
@@ -972,7 +992,7 @@ static int mmc_sdio_suspend(struct mmc_host *host)
 	mmc_claim_host(host);
 
 	if (mmc_card_keep_power(host) && mmc_card_wake_sdio_irq(host))
-		sdio_disable_wide(host->card);
+		sdio_disable_4bit_bus(host->card);
 
 	if (!mmc_card_keep_power(host)) {
 		mmc_power_off(host);
diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c
index 2ba00acf64e6..79dbf90216b5 100644
--- a/drivers/mmc/core/sdio_io.c
+++ b/drivers/mmc/core/sdio_io.c
@@ -133,7 +133,7 @@ int sdio_disable_func(struct sdio_func *func)
 
 err:
 	pr_debug("SDIO: Failed to disable device %s\n", sdio_func_id(func));
-	return -EIO;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(sdio_disable_func);
 
@@ -709,6 +709,7 @@ EXPORT_SYMBOL_GPL(sdio_get_host_pm_caps);
 /**
  *	sdio_set_host_pm_flags - set wanted host power management capabilities
  *	@func: SDIO function attached to host
+ *	@flags: Power Management flags to set
  *
  *	Set a capability bitmask corresponding to wanted host controller
  *	power management features for the upcoming suspend state.
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 3b706af35ec3..9c89a5b780e8 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -1009,6 +1009,7 @@ config MMC_MTK
 	tristate "MediaTek SD/MMC Card Interface support"
 	depends on HAS_DMA
 	select REGULATOR
+	select MMC_CQHCI
 	help
 	  This selects the MediaTek(R) Secure digital and Multimedia card Interface.
 	  If you have a machine with a integrated SD/MMC card reader, say Y or M here.
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 5cb692687698..300901415aa2 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -225,12 +225,13 @@ struct atmel_mci_dma {
  * @lock: Spinlock protecting the queue and associated data.
  * @regs: Pointer to MMIO registers.
  * @sg: Scatterlist entry currently being processed by PIO or PDC code.
+ * @sg_len: Size of the scatterlist
  * @pio_offset: Offset into the current scatterlist entry.
  * @buffer: Buffer used if we don't have the r/w proof capability. We
  *      don't have the time to switch pdc buffers so we have to use only
  *      one buffer for the full transaction.
  * @buf_size: size of the buffer.
- * @phys_buf_addr: buffer address needed for pdc.
+ * @buf_phys_addr: buffer address needed for pdc.
  * @cur_slot: The slot which is currently using the controller.
  * @mrq: The request currently being processed on @cur_slot,
  *	or NULL if the controller is idle.
@@ -240,6 +241,7 @@ struct atmel_mci_dma {
  * @data_size: just data->blocks * data->blksz.
  * @dma: DMA client state.
  * @data_chan: DMA channel being used for the current data transfer.
+ * @dma_conf: Configuration for the DMA slave
  * @cmd_status: Snapshot of SR taken upon completion of the current
  *	command. Only valid when EVENT_CMD_COMPLETE is pending.
  * @data_status: Snapshot of SR taken upon completion of the current
diff --git a/drivers/mmc/host/cqhci.c b/drivers/mmc/host/cqhci.c
index 75934f3c117e..cfa87dfa73d8 100644
--- a/drivers/mmc/host/cqhci.c
+++ b/drivers/mmc/host/cqhci.c
@@ -144,7 +144,7 @@ static void cqhci_dumpregs(struct cqhci_host *cq_host)
 		CQHCI_DUMP(": ===========================================\n");
 }
 
-/**
+/*
  * The allocated descriptor table for task, link & transfer descritors
  * looks like:
  * |----------|
@@ -422,7 +422,7 @@ static void cqhci_prep_task_desc(struct mmc_request *mrq,
 		CQHCI_BLK_COUNT(mrq->data->blocks) |
 		CQHCI_BLK_ADDR((u64)mrq->data->blk_addr);
 
-	pr_debug("%s: cqhci: tag %d task descriptor 0x016%llx\n",
+	pr_debug("%s: cqhci: tag %d task descriptor 0x%016llx\n",
 		 mmc_hostname(mrq->host), mrq->tag, (unsigned long long)*data);
 }
 
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 5e3d95b63676..95adeee07217 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -176,6 +176,7 @@ static int dw_mci_exynos_runtime_resume(struct device *dev)
 #ifdef CONFIG_PM_SLEEP
 /**
  * dw_mci_exynos_suspend_noirq - Exynos-specific suspend code
+ * @dev: Device to suspend (this device)
  *
  * This ensures that device will be in runtime active state in
  * dw_mci_exynos_resume_noirq after calling pm_runtime_force_resume()
@@ -188,6 +189,7 @@ static int dw_mci_exynos_suspend_noirq(struct device *dev)
 
 /**
  * dw_mci_exynos_resume_noirq - Exynos-specific resume code
+ * @dev: Device to resume (this device)
  *
  * On exynos5420 there is a silicon errata that will sometimes leave the
  * WAKEUP_INT bit in the CLKSEL register asserted.  This bit is 1 to indicate
@@ -472,7 +474,7 @@ static int dw_mci_exynos_execute_tuning(struct dw_mci_slot *slot, u32 opcode)
 	struct dw_mci_exynos_priv_data *priv = host->priv;
 	struct mmc_host *mmc = slot->mmc;
 	u8 start_smpl, smpl, candiates = 0;
-	s8 found = -1;
+	s8 found;
 	int ret = 0;
 
 	start_smpl = dw_mci_exynos_get_clksmpl(host);
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index a69d6a0c2e15..b5a41a7ce165 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -267,6 +267,7 @@ static struct variant_data variant_stm32_sdmmc = {
 	.datalength_bits	= 25,
 	.datactrl_blocksz	= 14,
 	.datactrl_any_blocksz	= true,
+	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.stm32_idmabsize_mask	= GENMASK(12, 5),
 	.busy_timeout		= true,
 	.busy_detect		= true,
@@ -292,6 +293,7 @@ static struct variant_data variant_stm32_sdmmcv2 = {
 	.datalength_bits	= 25,
 	.datactrl_blocksz	= 14,
 	.datactrl_any_blocksz	= true,
+	.datactrl_mask_sdio	= MCI_DPSM_ST_SDIOEN,
 	.stm32_idmabsize_mask	= GENMASK(16, 5),
 	.dma_lli		= true,
 	.busy_timeout		= true,
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 39e7fc54c438..4e2583f69a63 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -31,6 +31,8 @@
 #include <linux/mmc/sdio.h>
 #include <linux/mmc/slot-gpio.h>
 
+#include "cqhci.h"
+
 #define MAX_BD_NUM          1024
 
 /*--------------------------------------------------------------------------*/
@@ -152,6 +154,7 @@
 #define MSDC_INT_DMA_BDCSERR    (0x1 << 17)	/* W1C */
 #define MSDC_INT_DMA_GPDCSERR   (0x1 << 18)	/* W1C */
 #define MSDC_INT_DMA_PROTECT    (0x1 << 19)	/* W1C */
+#define MSDC_INT_CMDQ           (0x1 << 28)	/* W1C */
 
 /* MSDC_INTEN mask */
 #define MSDC_INTEN_MMCIRQ       (0x1 << 0)	/* RW */
@@ -182,6 +185,7 @@
 /* SDC_CFG mask */
 #define SDC_CFG_SDIOINTWKUP     (0x1 << 0)	/* RW */
 #define SDC_CFG_INSWKUP         (0x1 << 1)	/* RW */
+#define SDC_CFG_WRDTOC          (0x1fff  << 2)  /* RW */
 #define SDC_CFG_BUSWIDTH        (0x3 << 16)	/* RW */
 #define SDC_CFG_SDIO            (0x1 << 19)	/* RW */
 #define SDC_CFG_SDIOIDE         (0x1 << 20)	/* RW */
@@ -230,6 +234,7 @@
 #define MSDC_PATCH_BIT_DECRCTMO   (0x1 << 30)	/* RW */
 
 #define MSDC_PATCH_BIT1_CMDTA     (0x7 << 3)    /* RW */
+#define MSDC_PB1_BUSY_CHECK_SEL   (0x1 << 7)    /* RW */
 #define MSDC_PATCH_BIT1_STOP_DLY  (0xf << 8)    /* RW */
 
 #define MSDC_PATCH_BIT2_CFGRESP   (0x1 << 15)   /* RW */
@@ -431,9 +436,11 @@ struct msdc_host {
 				 /* cmd response sample selection for HS400 */
 	bool hs400_mode;	/* current eMMC will run at hs400 mode */
 	bool internal_cd;	/* Use internal card-detect logic */
+	bool cqhci;		/* support eMMC hw cmdq */
 	struct msdc_save_para save_para; /* used when gate HCLK */
 	struct msdc_tune_para def_tune_para; /* default tune setting */
 	struct msdc_tune_para saved_tune_para; /* tune result of CMD21/CMD19 */
+	struct cqhci_host *cq_host;
 };
 
 static const struct mtk_mmc_compatible mt8135_compat = {
@@ -538,6 +545,18 @@ static const struct mtk_mmc_compatible mt7620_compat = {
 	.use_internal_cd = true,
 };
 
+static const struct mtk_mmc_compatible mt6779_compat = {
+	.clk_div_bits = 12,
+	.hs400_tune = false,
+	.pad_tune_reg = MSDC_PAD_TUNE0,
+	.async_fifo = true,
+	.data_tune = true,
+	.busy_check = true,
+	.stop_clk_fix = true,
+	.enhance_rx = true,
+	.support_64g = true,
+};
+
 static const struct of_device_id msdc_of_ids[] = {
 	{ .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat},
 	{ .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat},
@@ -547,6 +566,7 @@ static const struct of_device_id msdc_of_ids[] = {
 	{ .compatible = "mediatek,mt7622-mmc", .data = &mt7622_compat},
 	{ .compatible = "mediatek,mt8516-mmc", .data = &mt8516_compat},
 	{ .compatible = "mediatek,mt7620-mmc", .data = &mt7620_compat},
+	{ .compatible = "mediatek,mt6779-mmc", .data = &mt6779_compat},
 	{}
 };
 MODULE_DEVICE_TABLE(of, msdc_of_ids);
@@ -710,21 +730,21 @@ static void msdc_unprepare_data(struct msdc_host *host, struct mmc_request *mrq)
 	}
 }
 
-/* clock control primitives */
-static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
+static u64 msdc_timeout_cal(struct msdc_host *host, u64 ns, u64 clks)
 {
-	u32 timeout, clk_ns;
+	u64 timeout, clk_ns;
 	u32 mode = 0;
 
-	host->timeout_ns = ns;
-	host->timeout_clks = clks;
 	if (host->mmc->actual_clock == 0) {
 		timeout = 0;
 	} else {
-		clk_ns  = 1000000000UL / host->mmc->actual_clock;
-		timeout = (ns + clk_ns - 1) / clk_ns + clks;
+		clk_ns  = 1000000000ULL;
+		do_div(clk_ns, host->mmc->actual_clock);
+		timeout = ns + clk_ns - 1;
+		do_div(timeout, clk_ns);
+		timeout += clks;
 		/* in 1048576 sclk cycle unit */
-		timeout = (timeout + (0x1 << 20) - 1) >> 20;
+		timeout = DIV_ROUND_UP(timeout, (0x1 << 20));
 		if (host->dev_comp->clk_div_bits == 8)
 			sdr_get_field(host->base + MSDC_CFG,
 				      MSDC_CFG_CKMOD, &mode);
@@ -734,9 +754,30 @@ static void msdc_set_timeout(struct msdc_host *host, u32 ns, u32 clks)
 		/*DDR mode will double the clk cycles for data timeout */
 		timeout = mode >= 2 ? timeout * 2 : timeout;
 		timeout = timeout > 1 ? timeout - 1 : 0;
-		timeout = timeout > 255 ? 255 : timeout;
 	}
-	sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, timeout);
+	return timeout;
+}
+
+/* clock control primitives */
+static void msdc_set_timeout(struct msdc_host *host, u64 ns, u64 clks)
+{
+	u64 timeout;
+
+	host->timeout_ns = ns;
+	host->timeout_clks = clks;
+
+	timeout = msdc_timeout_cal(host, ns, clks);
+	sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC,
+		      (u32)(timeout > 255 ? 255 : timeout));
+}
+
+static void msdc_set_busy_timeout(struct msdc_host *host, u64 ns, u64 clks)
+{
+	u64 timeout;
+
+	timeout = msdc_timeout_cal(host, ns, clks);
+	sdr_set_field(host->base + SDC_CFG, SDC_CFG_WRDTOC,
+		      (u32)(timeout > 8191 ? 8191 : timeout));
 }
 
 static void msdc_gate_clock(struct msdc_host *host)
@@ -1018,13 +1059,12 @@ static int msdc_auto_cmd_done(struct msdc_host *host, int events,
 	return cmd->error;
 }
 
-/**
+/*
  * msdc_recheck_sdio_irq - recheck whether the SDIO irq is lost
  *
  * Host controller may lost interrupt in some special case.
  * Add SDIO irq recheck mechanism to make sure all interrupts
  * can be processed immediately
- *
  */
 static void msdc_recheck_sdio_irq(struct msdc_host *host)
 {
@@ -1456,6 +1496,34 @@ static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
 		pm_runtime_put_noidle(host->dev);
 }
 
+static irqreturn_t msdc_cmdq_irq(struct msdc_host *host, u32 intsts)
+{
+	int cmd_err = 0, dat_err = 0;
+
+	if (intsts & MSDC_INT_RSPCRCERR) {
+		cmd_err = -EILSEQ;
+		dev_err(host->dev, "%s: CMD CRC ERR", __func__);
+	} else if (intsts & MSDC_INT_CMDTMO) {
+		cmd_err = -ETIMEDOUT;
+		dev_err(host->dev, "%s: CMD TIMEOUT ERR", __func__);
+	}
+
+	if (intsts & MSDC_INT_DATCRCERR) {
+		dat_err = -EILSEQ;
+		dev_err(host->dev, "%s: DATA CRC ERR", __func__);
+	} else if (intsts & MSDC_INT_DATTMO) {
+		dat_err = -ETIMEDOUT;
+		dev_err(host->dev, "%s: DATA TIMEOUT ERR", __func__);
+	}
+
+	if (cmd_err || dat_err) {
+		dev_err(host->dev, "cmd_err = %d, dat_err =%d, intsts = 0x%x",
+			cmd_err, dat_err, intsts);
+	}
+
+	return cqhci_irq(host->mmc, 0, cmd_err, dat_err);
+}
+
 static irqreturn_t msdc_irq(int irq, void *dev_id)
 {
 	struct msdc_host *host = (struct msdc_host *) dev_id;
@@ -1492,6 +1560,14 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
 		if (!(events & (event_mask & ~MSDC_INT_SDIOIRQ)))
 			break;
 
+		if ((host->mmc->caps2 & MMC_CAP2_CQE) &&
+		    (events & MSDC_INT_CMDQ)) {
+			msdc_cmdq_irq(host, events);
+			/* clear interrupts */
+			writel(events, host->base + MSDC_INT);
+			return IRQ_HANDLED;
+		}
+
 		if (!mrq) {
 			dev_err(host->dev,
 				"%s: MRQ=NULL; events=%08X; event_mask=%08X\n",
@@ -2176,6 +2252,36 @@ static int msdc_get_cd(struct mmc_host *mmc)
 		return !val;
 }
 
+static void msdc_cqe_enable(struct mmc_host *mmc)
+{
+	struct msdc_host *host = mmc_priv(mmc);
+
+	/* enable cmdq irq */
+	writel(MSDC_INT_CMDQ, host->base + MSDC_INTEN);
+	/* enable busy check */
+	sdr_set_bits(host->base + MSDC_PATCH_BIT1, MSDC_PB1_BUSY_CHECK_SEL);
+	/* default write data / busy timeout 20s */
+	msdc_set_busy_timeout(host, 20 * 1000000000ULL, 0);
+	/* default read data timeout 1s */
+	msdc_set_timeout(host, 1000000000ULL, 0);
+}
+
+static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery)
+{
+	struct msdc_host *host = mmc_priv(mmc);
+
+	/* disable cmdq irq */
+	sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INT_CMDQ);
+	/* disable busy check */
+	sdr_clr_bits(host->base + MSDC_PATCH_BIT1, MSDC_PB1_BUSY_CHECK_SEL);
+
+	if (recovery) {
+		sdr_set_field(host->base + MSDC_DMA_CTRL,
+			      MSDC_DMA_CTRL_STOP, 1);
+		msdc_reset_hw(host);
+	}
+}
+
 static const struct mmc_host_ops mt_msdc_ops = {
 	.post_req = msdc_post_req,
 	.pre_req = msdc_pre_req,
@@ -2192,6 +2298,11 @@ static const struct mmc_host_ops mt_msdc_ops = {
 	.hw_reset = msdc_hw_reset,
 };
 
+static const struct cqhci_host_ops msdc_cmdq_ops = {
+	.enable         = msdc_cqe_enable,
+	.disable        = msdc_cqe_disable,
+};
+
 static void msdc_of_property_parse(struct platform_device *pdev,
 				   struct msdc_host *host)
 {
@@ -2212,6 +2323,12 @@ static void msdc_of_property_parse(struct platform_device *pdev,
 		host->hs400_cmd_resp_sel_rising = true;
 	else
 		host->hs400_cmd_resp_sel_rising = false;
+
+	if (of_property_read_bool(pdev->dev.of_node,
+				  "supports-cqe"))
+		host->cqhci = true;
+	else
+		host->cqhci = false;
 }
 
 static int msdc_drv_probe(struct platform_device *pdev)
@@ -2327,6 +2444,8 @@ static int msdc_drv_probe(struct platform_device *pdev)
 		mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
 
 	mmc->caps |= MMC_CAP_CMD23;
+	if (host->cqhci)
+		mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD;
 	/* MMC core transfer sizes tunable parameters */
 	mmc->max_segs = MAX_BD_NUM;
 	if (host->dev_comp->support_64g)
@@ -2342,6 +2461,26 @@ static int msdc_drv_probe(struct platform_device *pdev)
 		host->dma_mask = DMA_BIT_MASK(32);
 	mmc_dev(mmc)->dma_mask = &host->dma_mask;
 
+	if (mmc->caps2 & MMC_CAP2_CQE) {
+		host->cq_host = devm_kzalloc(host->mmc->parent,
+					     sizeof(*host->cq_host),
+					     GFP_KERNEL);
+		if (!host->cq_host) {
+			ret = -ENOMEM;