Merge tag 'mmc-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add support for the asynchronous SDIO wakeup interrupts
   - Skip redundant evaluation of eMMC HS400 caps when no-MMC-cap
   - Add support to store error stats from host drivers
   - Extend debugfs to show error stats from host drivers
   - Add single I/O read support in the recovery path for 4k sector cards

  MMC host:
   - dw_mmc-exynos: Convert corresponding DT bindings to the dtschema
   - dw_mmc-rockchip: Add support for the Rockchip RV1126 variant
   - mmc_spi: Convert corresponding DT bindings to the dtschema
   - mtk-sd: Extend support for interrupts/pinctrls for SDIO low-power mode
   - mtk-sd: Add support for SDIO wake irqs
   - mtk-sd: Add support for the Mediatek MT8188 variant
   - renesas_sdhi: Drop redundant manual tap correction for newer SoCs
   - renesas_sdhi: Add support for the R-Car S4-8 and generic Gen4 variants
   - sdhci/cqhci: Add support to capture stats from host errors
   - sdhci-brcmstb: Add ability to increase max clock rate for SDIO on 72116b0
   - sdhci-msm: Add support for the MSM8998 and SM8450 variant
   - sdhci-of-at91: Fixup UHS-I mode by rewriting of MC1R
   - sdhci-of-dwcmshc: Add support for the Rockchip rk3588 variant
   - sdhci-of-dwcmshc: Enable reset support for the Rockchip variants
   - sdhci-pci-gli: Improve I/O read/write performance for GL9763E
   - sdhci-s3c: Convert corresponding DT bindings to the dtschema
   - tmio: Avoid glitches when resetting

  MEMSTICK core:
   - A couple of minor fixes and cleanups"

* tag 'mmc-v5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (61 commits)
  mmc: mediatek: add support for SDIO eint wakup IRQ
  mmc: core: Add support for SDIO wakeup interrupt
  dt-bindings: mmc: mtk-sd: extend interrupts and pinctrls properties
  dt-bindings: mmc: rockchip-dw-mshc: Document Rockchip RV1126
  mmc: renesas_sdhi: newer SoCs don't need manual tap correction
  mmc: cavium-thunderx: Add of_node_put() when breaking out of loop
  mmc: cavium-octeon: Add of_node_put() when breaking out of loop
  mmc: core: quirks: Add of_node_put() when breaking out of loop
  mmc: sdhci-brcmstb: use clk_get_rate(base_clk) in PM resume
  dt-bindings: mmc: sdhci-msm: Document the SM8450 compatible
  mmc: sdhci-msm: drop redundant of_device_id entries
  dt-bindings: mmc: sdhci-msm: add MSM8998
  mmc: block: Add single read for 4k sector cards
  mmc: mxcmmc: Use mmc_card_sdio macro
  mmc: core: Use mmc_card_* macro and add a new for the sd_combo type
  dt-bindings: mmc: sdhci-msm: constrain reg-names per variants
  dt-bindings: mmc: sdhci-msm: fix reg-names entries
  dt-bindings: mmc: Add compatible for MediaTek MT8188
  dt-bindings: mmc: sdhci-msm: document resets
  mmc: sdhci-of-at91: fix set_uhs_signaling rewriting of MC1R
  ...

25 files changed, 490 insertions, 140 deletions

diff --git a/drivers/mmc/host/cavium-octeon.c b/drivers/mmc/host/cavium-octeon.c
index 2c4b2df52adb..12dca91a8ef6 100644
--- a/drivers/mmc/host/cavium-octeon.c
+++ b/drivers/mmc/host/cavium-octeon.c
@@ -277,6 +277,7 @@ static int octeon_mmc_probe(struct platform_device *pdev)
 		if (ret) {
 			dev_err(&pdev->dev, "Error populating slots\n");
 			octeon_mmc_set_shared_power(host, 0);
+			of_node_put(cn);
 			goto error;
 		}
 		i++;
diff --git a/drivers/mmc/host/cavium-thunderx.c b/drivers/mmc/host/cavium-thunderx.c
index 76013bbbcff3..202b1d6da678 100644
--- a/drivers/mmc/host/cavium-thunderx.c
+++ b/drivers/mmc/host/cavium-thunderx.c
@@ -142,8 +142,10 @@ static int thunder_mmc_probe(struct pci_dev *pdev,
 				continue;
 
 			ret = cvm_mmc_of_slot_probe(&host->slot_pdev[i]->dev, host);
-			if (ret)
+			if (ret) {
+				of_node_put(child_node);
 				goto error;
+			}
 		}
 		i++;
 	}
diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c
index b0d30c35c390..b3d7d6d8d654 100644
--- a/drivers/mmc/host/cqhci-core.c
+++ b/drivers/mmc/host/cqhci-core.c
@@ -822,8 +822,15 @@ irqreturn_t cqhci_irq(struct mmc_host *mmc, u32 intmask, int cmd_error,
 	pr_debug("%s: cqhci: IRQ status: 0x%08x\n", mmc_hostname(mmc), status);
 
 	if ((status & (CQHCI_IS_RED | CQHCI_IS_GCE | CQHCI_IS_ICCE)) ||
-	    cmd_error || data_error)
+	    cmd_error || data_error) {
+		if (status & CQHCI_IS_RED)
+			mmc_debugfs_err_stats_inc(mmc, MMC_ERR_CMDQ_RED);
+		if (status & CQHCI_IS_GCE)
+			mmc_debugfs_err_stats_inc(mmc, MMC_ERR_CMDQ_GCE);
+		if (status & CQHCI_IS_ICCE)
+			mmc_debugfs_err_stats_inc(mmc, MMC_ERR_CMDQ_ICCE);
 		cqhci_error_irq(mmc, status, cmd_error, data_error);
+	}
 
 	if (status & CQHCI_IS_TCC) {
 		/* read TCN and complete the request */
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index ca5be4445ae0..9f20ac524c8b 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -670,7 +670,9 @@ static int dw_mci_exynos_remove(struct platform_device *pdev)
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 
-	return dw_mci_pltfm_remove(pdev);
+	dw_mci_pltfm_remove(pdev);
+
+	return 0;
 }
 
 static const struct dev_pm_ops dw_mci_exynos_pmops = {
diff --git a/drivers/mmc/host/dw_mmc-hi3798cv200.c b/drivers/mmc/host/dw_mmc-hi3798cv200.c
index e9437ef8ef19..6f22fe054087 100644
--- a/drivers/mmc/host/dw_mmc-hi3798cv200.c
+++ b/drivers/mmc/host/dw_mmc-hi3798cv200.c
@@ -179,7 +179,9 @@ static int dw_mci_hi3798cv200_remove(struct platform_device *pdev)
 	clk_disable_unprepare(priv->drive_clk);
 	clk_disable_unprepare(priv->sample_clk);
 
-	return dw_mci_pltfm_remove(pdev);
+	dw_mci_pltfm_remove(pdev);
+
+	return 0;
 }
 
 static const struct of_device_id dw_mci_hi3798cv200_match[] = {
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index f825487aa739..2a99f15f527f 100644
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -377,7 +377,9 @@ static int dw_mci_rockchip_remove(struct platform_device *pdev)
 	pm_runtime_disable(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 
-	return dw_mci_pltfm_remove(pdev);
+	dw_mci_pltfm_remove(pdev);
+
+	return 0;
 }
 
 static const struct dev_pm_ops dw_mci_rockchip_dev_pm_ops = {
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 01159eaf8694..012aa85489d8 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -762,7 +762,7 @@ int mmci_dmae_setup(struct mmci_host *host)
 
 	/*
 	 * If only an RX channel is specified, the driver will
-	 * attempt to use it bidirectionally, however if it is
+	 * attempt to use it bidirectionally, however if it
 	 * is specified but cannot be located, DMA will be disabled.
 	 */
 	if (dmae->rx_channel && !dmae->tx_channel)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 9da4489dc345..4ff73d1883de 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2014-2015 MediaTek Inc.
+ * Copyright (c) 2014-2015, 2022 MediaTek Inc.
  * Author: Chaotian.Jing <chaotian.jing@mediatek.com>
  */
 
@@ -20,6 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/pm_wakeirq.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
@@ -440,8 +441,10 @@ struct msdc_host {
 	struct pinctrl *pinctrl;
 	struct pinctrl_state *pins_default;
 	struct pinctrl_state *pins_uhs;
+	struct pinctrl_state *pins_eint;
 	struct delayed_work req_timeout;
 	int irq;		/* host interrupt */
+	int eint_irq;		/* interrupt from sdio device for waking up system */
 	struct reset_control *reset;
 
 	struct clk *src_clk;	/* msdc source clock */
@@ -1521,17 +1524,46 @@ static void __msdc_enable_sdio_irq(struct msdc_host *host, int enb)
 
 static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
 {
-	unsigned long flags;
 	struct msdc_host *host = mmc_priv(mmc);
+	unsigned long flags;
+	int ret;
 
 	spin_lock_irqsave(&host->lock, flags);
 	__msdc_enable_sdio_irq(host, enb);
 	spin_unlock_irqrestore(&host->lock, flags);
 
-	if (enb)
-		pm_runtime_get_noresume(host->dev);
-	else
-		pm_runtime_put_noidle(host->dev);
+	if (mmc_card_enable_async_irq(mmc->card) && host->pins_eint) {
+		if (enb) {
+			/*
+			 * In dev_pm_set_dedicated_wake_irq_reverse(), eint pin will be set to
+			 * GPIO mode. We need to restore it to SDIO DAT1 mode after that.
+			 * Since the current pinstate is pins_uhs, to ensure pinctrl select take
+			 * affect successfully, we change the pinstate to pins_eint firstly.
+			 */
+			pinctrl_select_state(host->pinctrl, host->pins_eint);
+			ret = dev_pm_set_dedicated_wake_irq_reverse(host->dev, host->eint_irq);
+
+			if (ret) {
+				dev_err(host->dev, "Failed to register SDIO wakeup irq!\n");
+				host->pins_eint = NULL;
+				pm_runtime_get_noresume(host->dev);
+			} else {
+				dev_dbg(host->dev, "SDIO eint irq: %d!\n", host->eint_irq);
+			}
+
+			pinctrl_select_state(host->pinctrl, host->pins_uhs);
+		} else {
+			dev_pm_clear_wake_irq(host->dev);
+		}
+	} else {
+		if (enb) {
+			/* Ensure host->pins_eint is NULL */
+			host->pins_eint = NULL;
+			pm_runtime_get_noresume(host->dev);
+		} else {
+			pm_runtime_put_noidle(host->dev);
+		}
+	}
 }
 
 static irqreturn_t msdc_cmdq_irq(struct msdc_host *host, u32 intsts)
@@ -2319,7 +2351,7 @@ static int msdc_execute_hs400_tuning(struct mmc_host *mmc, struct mmc_card *card
 	else
 		val = readl(host->base + PAD_DS_TUNE);
 
-	dev_info(host->dev, "Fianl PAD_DS_TUNE: 0x%x\n", val);
+	dev_info(host->dev, "Final PAD_DS_TUNE: 0x%x\n", val);
 
 	return 0;
 
@@ -2635,6 +2667,20 @@ static int msdc_drv_probe(struct platform_device *pdev)
 		goto host_free;
 	}
 
+	/* Support for SDIO eint irq ? */
+	if ((mmc->pm_caps & MMC_PM_WAKE_SDIO_IRQ) && (mmc->pm_caps & MMC_PM_KEEP_POWER)) {
+		host->eint_irq = platform_get_irq_byname(pdev, "sdio_wakeup");
+		if (host->eint_irq > 0) {
+			host->pins_eint = pinctrl_lookup_state(host->pinctrl, "state_eint");
+			if (IS_ERR(host->pins_eint)) {
+				dev_err(&pdev->dev, "Cannot find pinctrl eint!\n");
+				host->pins_eint = NULL;
+			} else {
+				device_init_wakeup(&pdev->dev, true);
+			}
+		}
+	}
+
 	msdc_of_property_parse(pdev, host);
 
 	host->dev = &pdev->dev;
@@ -2849,6 +2895,15 @@ static int __maybe_unused msdc_runtime_suspend(struct device *dev)
 	struct msdc_host *host = mmc_priv(mmc);
 
 	msdc_save_reg(host);
+
+	if (sdio_irq_claimed(mmc)) {
+		if (host->pins_eint) {
+			disable_irq(host->irq);
+			pinctrl_select_state(host->pinctrl, host->pins_eint);
+		}
+
+		__msdc_enable_sdio_irq(host, 0);
+	}
 	msdc_gate_clock(host);
 	return 0;
 }
@@ -2864,12 +2919,18 @@ static int __maybe_unused msdc_runtime_resume(struct device *dev)
 		return ret;
 
 	msdc_restore_reg(host);
+
+	if (sdio_irq_claimed(mmc) && host->pins_eint) {
+		pinctrl_select_state(host->pinctrl, host->pins_uhs);
+		enable_irq(host->irq);
+	}
 	return 0;
 }
 
 static int __maybe_unused msdc_suspend(struct device *dev)
 {
 	struct mmc_host *mmc = dev_get_drvdata(dev);
+	struct msdc_host *host = mmc_priv(mmc);
 	int ret;
 
 	if (mmc->caps2 & MMC_CAP2_CQE) {
@@ -2878,11 +2939,24 @@ static int __maybe_unused msdc_suspend(struct device *dev)
 			return ret;
 	}
 
+	/*
+	 * Bump up runtime PM usage counter otherwise dev->power.needs_force_resume will
+	 * not be marked as 1, pm_runtime_force_resume() will go out directly.
+	 */
+	if (sdio_irq_claimed(mmc) && host->pins_eint)
+		pm_runtime_get_noresume(dev);
+
 	return pm_runtime_force_suspend(dev);
 }
 
 static int __maybe_unused msdc_resume(struct device *dev)
 {
+	struct mmc_host *mmc = dev_get_drvdata(dev);
+	struct msdc_host *host = mmc_priv(mmc);
+
+	if (sdio_irq_claimed(mmc) && host->pins_eint)
+		pm_runtime_put_noidle(dev);
+
 	return pm_runtime_force_resume(dev);
 }
 
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index de04b5afef2e..2cf0413407ea 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -923,7 +923,7 @@ static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
 	 * One way to prevent this is to only allow 1-bit transfers.
 	 */
 
-	if (is_imx31_mmc(mxcmci) && card->type == MMC_TYPE_SDIO)
+	if (is_imx31_mmc(mxcmci) && mmc_card_sdio(card))
 		host->caps &= ~MMC_CAP_4_BIT_DATA;
 	else
 		host->caps |= MMC_CAP_4_BIT_DATA;
@@ -1025,7 +1025,7 @@ static int mxcmci_probe(struct platform_device *pdev)
 	mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
 	mmc->max_seg_size = mmc->max_req_size;
 
-	host->devtype = (enum mxcmci_type)of_device_get_match_data(&pdev->dev);
+	host->devtype = (uintptr_t)of_device_get_match_data(&pdev->dev);
 
 	/* adjust max_segs after devtype detection */
 	if (!is_mpc512x_mmc(host))
diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index 1a1e3e020a8c..c4abfee1ebae 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -43,6 +43,7 @@ struct renesas_sdhi_quirks {
 	bool hs400_4taps;
 	bool fixed_addr_mode;
 	bool dma_one_rx_only;
+	bool manual_tap_correction;
 	u32 hs400_bad_taps;
 	const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX];
 };
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 4404ca1f98d8..6edbf5c161ab 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -49,9 +49,6 @@
 #define HOST_MODE_GEN3_32BIT	(HOST_MODE_GEN3_WMODE | HOST_MODE_GEN3_BUSWIDTH)
 #define HOST_MODE_GEN3_64BIT	0
 
-#define CTL_SDIF_MODE	0xe6
-#define SDIF_MODE_HS400		BIT(0)
-
 #define SDHI_VER_GEN2_SDR50	0x490c
 #define SDHI_VER_RZ_A1		0x820b
 /* very old datasheets said 0x490c for SDR104, too. They are wrong! */
@@ -383,8 +380,7 @@ static void renesas_sdhi_hs400_complete(struct mmc_host *mmc)
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_DT2FF,
 		       priv->scc_tappos_hs400);
 
-	/* Gen3 can't do automatic tap correction with HS400, so disable it */
-	if (sd_ctrl_read16(host, CTL_VERSION) == SDHI_VER_GEN3_SDMMC)
+	if (priv->quirks && priv->quirks->manual_tap_correction)
 		sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL,
 			       ~SH_MOBILE_SDHI_SCC_RVSCNTL_RVSEN &
 			       sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL));
@@ -562,23 +558,25 @@ static void renesas_sdhi_scc_reset(struct tmio_mmc_host *host, struct renesas_sd
 }
 
 /* only populated for TMIO_MMC_MIN_RCAR2 */
-static void renesas_sdhi_reset(struct tmio_mmc_host *host)
+static void renesas_sdhi_reset(struct tmio_mmc_host *host, bool preserve)
 {
 	struct renesas_sdhi *priv = host_to_priv(host);
 	int ret;
 	u16 val;
 
-	if (priv->rstc) {
-		reset_control_reset(priv->rstc);
-		/* Unknown why but without polling reset status, it will hang */
-		read_poll_timeout(reset_control_status, ret, ret == 0, 1, 100,
-				  false, priv->rstc);
-		/* At least SDHI_VER_GEN2_SDR50 needs manual release of reset */
-		sd_ctrl_write16(host, CTL_RESET_SD, 0x0001);
-		priv->needs_adjust_hs400 = false;
-		renesas_sdhi_set_clock(host, host->clk_cache);
-	} else if (priv->scc_ctl) {
-		renesas_sdhi_scc_reset(host, priv);
+	if (!preserve) {
+		if (priv->rstc) {
+			reset_control_reset(priv->rstc);
+			/* Unknown why but without polling reset status, it will hang */
+			read_poll_timeout(reset_control_status, ret, ret == 0, 1, 100,
+					  false, priv->rstc);
+			/* At least SDHI_VER_GEN2_SDR50 needs manual release of reset */
+			sd_ctrl_write16(host, CTL_RESET_SD, 0x0001);
+			priv->needs_adjust_hs400 = false;
+			renesas_sdhi_set_clock(host, host->clk_cache);
+		} else if (priv->scc_ctl) {
+			renesas_sdhi_scc_reset(host, priv);
+		}
 	}
 
 	if (sd_ctrl_read16(host, CTL_VERSION) >= SDHI_VER_GEN3_SD) {
@@ -719,7 +717,7 @@ static bool renesas_sdhi_manual_correction(struct tmio_mmc_host *host, bool use_
 	sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ, 0);
 
 	/* Change TAP position according to correction status */
-	if (sd_ctrl_read16(host, CTL_VERSION) == SDHI_VER_GEN3_SDMMC &&
+	if (priv->quirks && priv->quirks->manual_tap_correction &&
 	    host->mmc->ios.timing == MMC_TIMING_MMC_HS400) {
 		u32 bad_taps = priv->quirks ? priv->quirks->hs400_bad_taps : 0;
 		/*
@@ -938,6 +936,10 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 	if (IS_ERR(priv->clk_cd))
 		return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk_cd), "cannot get cd clock");
 
+	priv->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
+	if (IS_ERR(priv->rstc))
+		return PTR_ERR(priv->rstc);
+
 	priv->pinctrl = devm_pinctrl_get(&pdev->dev);
 	if (!IS_ERR(priv->pinctrl)) {
 		priv->pins_default = pinctrl_lookup_state(priv->pinctrl,
@@ -1030,10 +1032,6 @@ int renesas_sdhi_probe(struct platform_device *pdev,
 	if (ret)
 		goto efree;
 
-	priv->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
-	if (IS_ERR(priv->rstc))
-		return PTR_ERR(priv->rstc);
-
 	ver = sd_ctrl_read16(host, CTL_VERSION);
 	/* GEN2_SDR104 is first known SDHI to use 32bit block count */
 	if (ver < SDHI_VER_GEN2_SDR104 && mmc_data->max_blk_count > U16_MAX)
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 3084b15ae2cb..42937596c4c4 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -170,6 +170,7 @@ static const struct renesas_sdhi_quirks sdhi_quirks_4tap_nohs400_one_rx = {
 static const struct renesas_sdhi_quirks sdhi_quirks_4tap = {
 	.hs400_4taps = true,
 	.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
+	.manual_tap_correction = true,
 };
 
 static const struct renesas_sdhi_quirks sdhi_quirks_nohs400 = {
@@ -182,25 +183,30 @@ static const struct renesas_sdhi_quirks sdhi_quirks_fixed_addr = {
 
 static const struct renesas_sdhi_quirks sdhi_quirks_bad_taps1357 = {
 	.hs400_bad_taps = BIT(1) | BIT(3) | BIT(5) | BIT(7),
+	.manual_tap_correction = true,
 };
 
 static const struct renesas_sdhi_quirks sdhi_quirks_bad_taps2367 = {
 	.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
+	.manual_tap_correction = true,
 };
 
 static const struct renesas_sdhi_quirks sdhi_quirks_r8a7796_es13 = {
 	.hs400_4taps = true,
 	.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
 	.hs400_calib_table = r8a7796_es13_calib_table,
+	.manual_tap_correction = true,
 };
 
 static const struct renesas_sdhi_quirks sdhi_quirks_r8a77965 = {
 	.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
 	.hs400_calib_table = r8a77965_calib_table,
+	.manual_tap_correction = true,
 };
 
 static const struct renesas_sdhi_quirks sdhi_quirks_r8a77990 = {
 	.hs400_calib_table = r8a77990_calib_table,
+	.manual_tap_correction = true,
 };
 
 /*
@@ -268,6 +274,7 @@ static const struct of_device_id renesas_sdhi_internal_dmac_of_match[] = {
 	{ .compatible = "renesas,sdhi-r8a77990", .data = &of_r8a77990_compatible, },
 	{ .compatible = "renesas,sdhi-r8a77995", .data = &of_rcar_gen3_nohs400_compatible, },
 	{ .compatible = "renesas,rcar-gen3-sdhi", .data = &of_rcar_gen3_compatible, },
+	{ .compatible = "renesas,rcar-gen4-sdhi", .data = &of_rcar_gen3_compatible, },
 	{},
 };
 MODULE_DEVICE_TABLE(of, renesas_sdhi_internal_dmac_of_match);
@@ -321,7 +328,7 @@ renesas_sdhi_internal_dmac_dataend_dma(struct tmio_mmc_host *host)
 }
 
 /*
- * renesas_sdhi_internal_dmac_map() will be called with two difference
+ * renesas_sdhi_internal_dmac_map() will be called with two different
  * sg pointers in two mmc_data by .pre_req(), but tmio host can have a single
  * sg_ptr only. So, renesas_sdhi_internal_dmac_{un}map() should use a sg
  * pointer in a mmc_data instead of host->sg_ptr.
@@ -355,7 +362,7 @@ renesas_sdhi_internal_dmac_map(struct tmio_mmc_host *host,
 
 	data->host_cookie = cookie;
 
-	/* This DMAC cannot handle if buffer is not 128-bytes alignment */
+	/* This DMAC needs buffers to be 128-byte aligned */
 	if (!IS_ALIGNED(sg_dma_address(data->sg), 128)) {
 		renesas_sdhi_internal_dmac_unmap(host, data, cookie);
 		return false;
diff --git a/drivers/mmc/host/sdhci-brcmstb.c b/drivers/mmc/host/sdhci-brcmstb.c
index 8eb57de48e0c..aff36a933ebe 100644
--- a/drivers/mmc/host/sdhci-brcmstb.c
+++ b/drivers/mmc/host/sdhci-brcmstb.c
@@ -31,6 +31,8 @@
 struct sdhci_brcmstb_priv {
 	void __iomem *cfg_regs;
 	unsigned int flags;
+	struct clk *base_clk;
+	u32 base_freq_hz;
 };
 
 struct brcmstb_match_priv {
@@ -250,9 +252,11 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
 	struct sdhci_pltfm_host *pltfm_host;
 	const struct of_device_id *match;
 	struct sdhci_brcmstb_priv *priv;
+	u32 actual_clock_mhz;
 	struct sdhci_host *host;
 	struct resource *iomem;
 	struct clk *clk;
+	struct clk *base_clk = NULL;
 	int res;
 
 	match = of_match_node(sdhci_brcm_of_match, pdev->dev.of_node);
@@ -330,6 +334,35 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
 	if (match_priv->flags & BRCMSTB_MATCH_FLAGS_BROKEN_TIMEOUT)
 		host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
 
+	/* Change the base clock frequency if the DT property exists */
+	if (device_property_read_u32(&pdev->dev, "clock-frequency",
+				     &priv->base_freq_hz) != 0)
+		goto add_host;
+
+	base_clk = devm_clk_get_optional(&pdev->dev, "sdio_freq");
+	if (IS_ERR(base_clk)) {
+		dev_warn(&pdev->dev, "Clock for \"sdio_freq\" not found\n");
+		goto add_host;
+	}
+
+	res = clk_prepare_enable(base_clk);
+	if (res)
+		goto err;
+
+	/* set improved clock rate */
+	clk_set_rate(base_clk, priv->base_freq_hz);
+	actual_clock_mhz = clk_get_rate(base_clk) / 1000000;
+
+	host->caps &= ~SDHCI_CLOCK_V3_BASE_MASK;
+	host->caps |= (actual_clock_mhz << SDHCI_CLOCK_BASE_SHIFT);
+	/* Disable presets because they are now incorrect */
+	host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
+
+	dev_dbg(&pdev->dev, "Base Clock Frequency changed to %dMHz\n",
+		actual_clock_mhz);
+	priv->base_clk = base_clk;
+
+add_host:
 	res = sdhci_brcmstb_add_host(host, priv);
 	if (res)
 		goto err;
@@ -340,6 +373,7 @@ static int sdhci_brcmstb_probe(struct platform_device *pdev)
 err:
 	sdhci_pltfm_free(pdev);
 err_clk:
+	clk_disable_unprepare(base_clk);
 	clk_disable_unprepare(clk);
 	return res;
 }
@@ -351,11 +385,51 @@ static void sdhci_brcmstb_shutdown(struct platform_device *pdev)
 
 MODULE_DEVICE_TABLE(of, sdhci_brcm_of_match);
 
+#ifdef CONFIG_PM_SLEEP
+static int sdhci_brcmstb_suspend(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host);
+
+	clk_disable_unprepare(priv->base_clk);
+	return sdhci_pltfm_suspend(dev);
+}
+
+static int sdhci_brcmstb_resume(struct device *dev)
+{
+	struct sdhci_host *host = dev_get_drvdata(dev);
+	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+	struct sdhci_brcmstb_priv *priv = sdhci_pltfm_priv(pltfm_host);
+	int ret;
+
+	ret = sdhci_pltfm_resume(dev);
+	if (!ret && priv->base_freq_hz) {
+		ret = clk_prepare_enable(priv->base_clk);
+		/*
+		 * Note: using clk_get_rate() below as clk_get_rate()
+		 * honors CLK_GET_RATE_NOCACHE attribute, but clk_set_rate()
+		 * may do implicit get_rate() calls that do not honor
+		 * CLK_GET_RATE_NOCACHE.
+		 */
+		if (!ret &&
+		    (clk_get_rate(priv->base_clk) != priv->base_freq_hz))
+			ret = clk_set_rate(priv->base_clk, priv->base_freq_hz);
+	}
+
+	return ret;
+}
+#endif
+
+static const struct dev_pm_ops sdhci_brcmstb_pmops = {
+	SET_SYSTEM_SLEEP_PM_OPS(sdhci_brcmstb_suspend, sdhci_brcmstb_resume)
+};
+
 static struct platform_driver sdhci_brcmstb_driver = {
 	.driver		= {
 		.name	= "sdhci-brcmstb",
 		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-		.pm	= &sdhci_pltfm_pmops,
+		.pm	= &sdhci_brcmstb_pmops,
 		.of_match_table = of_match_ptr(sdhci_brcm_of_match),
 	},
 	.probe		= sdhci_brcmstb_probe,
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index e395411fb6fd..dc2991422a87 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2435,33 +2435,12 @@ static const struct sdhci_msm_variant_info sdm845_sdhci_var = {
 };
 
 static const struct of_device_id sdhci_msm_dt_match[] = {
-	 /* Following two entries are deprecated (kept only for backward compatibility) */
-	{.compatible = "qcom,sdhci-msm-v4", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,sdhci-msm-v5", .data = &sdhci_msm_v5_var},
-	/* Add entries for sdcc versions less than 5.0 here */
-	{.compatible = "qcom,apq8084-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8226-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8916-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8953-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8974-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8992-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8994-sdhci", .data = &sdhci_msm_mci_var},
-	{.compatible = "qcom,msm8996-sdhci", .data = &sdhci_msm_mci_var},
 	/*
-	 * Add entries for sdcc version 5.0 here. For SDCC version 5.0.0,
-	 * MCI registers are removed from SDCC interface and some registers
-	 * are moved to HC.
+	 * Do not add new variants to the driver which are compatible with
+	 * generic ones, unless they need customization.
 	 */
-	{.compatible = "qcom,qcs404-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sdx55-sdhci",  .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sdx65-sdhci",  .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sdm630-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sm6125-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sm6350-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sm8150-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sm8250-sdhci", .data = &sdhci_msm_v5_var},
-	{.compatible = "qcom,sc7280-sdhci", .data = &sdhci_msm_v5_var},
-	/* Add entries where soc specific handling is required, here */
+	{.compatible = "qcom,sdhci-msm-v4", .data = &sdhci_msm_mci_var},
+	{.compatible = "qcom,sdhci-msm-v5", .data = &sdhci_msm_v5_var},
 	{.compatible = "qcom,sdm845-sdhci", .data = &sdm845_sdhci_var},
 	{.compatible = "qcom,sc7180-sdhci", .data = &sdm845_sdhci_var},
 	{},
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 757801dfc308..3997cad1f793 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -1733,7 +1733,6 @@ err_pltfm_free:
 
 static int sdhci_arasan_remove(struct platform_device *pdev)
 {
-	int ret;
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host);
@@ -1747,11 +1746,11 @@ static int sdhci_arasan_remove(struct platform_device *pdev)
 
 	sdhci_arasan_unregister_sdclk(&pdev->dev);
 
-	ret = sdhci_pltfm_unregister(pdev);
+	sdhci_pltfm_unregister(pdev);
 
 	clk_disable_unprepare(clk_ahb);
 
-	return ret;
+	return 0;
 }
 
 static struct platform_driver sdhci_arasan_driver = {
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 10fb4cb2c731..cd0134580a90 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -100,8 +100,13 @@ static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock)
 static void sdhci_at91_set_uhs_signaling(struct sdhci_host *host,
 					 unsigned int timing)
 {
-	if (timing == MMC_TIMING_MMC_DDR52)
-		sdhci_writeb(host, SDMMC_MC1R_DDR, SDMMC_MC1R);
+	u8 mc1r;
+
+	if (timing == MMC_TIMING_MMC_DDR52) {
+		mc1r = sdhci_readb(host, SDMMC_MC1R);
+		mc1r |= SDMMC_MC1R_DDR;
+		sdhci_writeb(host, mc1r, SDMMC_MC1R);
+	}
 	sdhci_set_uhs_signaling(host, timing);
 }
 
diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index bac874ab0b33..4e904850973c 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -15,6 +15,7 @@
 #include