[U-Boot] [v6, 4/5] mmc: fsl_esdhc: drop i.MX code

Yangbo Lu yangbo.lu at nxp.com
Wed Jun 19 04:24:29 UTC 2019 

Dropped i.MX code which couldn't be reused.

Signed-off-by: Yangbo Lu <yangbo.lu at nxp.com>
Tested-by: Steffen Dirkwinkel <s.dirkwinkel at beckhoff.com>
Acked-by: Peng Fan <peng.fan at nxp.com>
---
Changes for v2:
	- Added this patch.
Changes for v3:
	- Rebased.
Changes for v4:
	- Rebased.
	- Added Tested-by/Acked-by.
Changes for v5:
	- Dropped MCF5441x code.
Changes for v6:
	- None.
---
 drivers/mmc/fsl_esdhc.c | 626 ++----------------------------------------------
 include/fsl_esdhc.h     |  57 -----
 2 files changed, 16 insertions(+), 667 deletions(-)

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 672691f..65fc849 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -16,14 +16,11 @@
 #include <hwconfig.h>
 #include <mmc.h>
 #include <part.h>
-#include <power/regulator.h>
 #include <malloc.h>
 #include <fsl_esdhc.h>
 #include <fdt_support.h>
 #include <asm/io.h>
 #include <dm.h>
-#include <asm-generic/gpio.h>
-#include <dm/pinctrl.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -33,8 +30,6 @@ DECLARE_GLOBAL_DATA_PTR;
 				IRQSTATEN_CIE | IRQSTATEN_DTOE | IRQSTATEN_DCE | \
 				IRQSTATEN_DEBE | IRQSTATEN_BRR | IRQSTATEN_BWR | \
 				IRQSTATEN_DINT)
-#define MAX_TUNING_LOOP 40
-
 struct fsl_esdhc {
 	uint    dsaddr;		/* SDMA system address register */
 	uint    blkattr;	/* Block attributes register */
@@ -54,37 +49,20 @@ struct fsl_esdhc {
 	uint    autoc12err;	/* Auto CMD error status register */
 	uint    hostcapblt;	/* Host controller capabilities register */
 	uint    wml;		/* Watermark level register */
-	uint    mixctrl;	/* For USDHC */
-	char    reserved1[4];	/* reserved */
+	char    reserved1[8];	/* reserved */
 	uint    fevt;		/* Force event register */
 	uint    admaes;		/* ADMA error status register */
 	uint    adsaddr;	/* ADMA system address register */
-	char    reserved2[4];
-	uint    dllctrl;
-	uint    dllstat;
-	uint    clktunectrlstatus;
-	char    reserved3[4];
-	uint	strobe_dllctrl;
-	uint	strobe_dllstat;
-	char    reserved4[72];
-	uint    vendorspec;
-	uint    mmcboot;
-	uint    vendorspec2;
-	uint    tuning_ctrl;	/* on i.MX6/7/8 */
-	char	reserved5[44];
+	char    reserved2[160];
 	uint    hostver;	/* Host controller version register */
-	char    reserved6[4];	/* reserved */
+	char    reserved3[4];	/* reserved */
 	uint    dmaerraddr;	/* DMA error address register */
-	char    reserved7[4];	/* reserved */
+	char    reserved4[4];	/* reserved */
 	uint    dmaerrattr;	/* DMA error attribute register */
-	char    reserved8[4];	/* reserved */
+	char    reserved5[4];	/* reserved */
 	uint    hostcapblt2;	/* Host controller capabilities register 2 */
-	char    reserved9[8];	/* reserved */
-	uint    tcr;		/* Tuning control register */
-	char    reserved10[28];	/* reserved */
-	uint    sddirctl;	/* SD direction control register */
-	char    reserved11[712];/* reserved */
-	uint    scr;		/* eSDHC control register */
+	char    reserved6[756];	/* reserved */
+	uint    esdhcctl;	/* eSDHC control register */
 };
 
 struct fsl_esdhc_plat {
@@ -92,11 +70,6 @@ struct fsl_esdhc_plat {
 	struct mmc mmc;
 };
 
-struct esdhc_soc_data {
-	u32 flags;
-	u32 caps;
-};
-
 /**
  * struct fsl_esdhc_priv
  *
@@ -109,13 +82,6 @@ struct esdhc_soc_data {
  * @dev: pointer for the device
  * @non_removable: 0: removable; 1: non-removable
  * @wp_enable: 1: enable checking wp; 0: no check
- * @vs18_enable: 1: use 1.8V voltage; 0: use 3.3V
- * @flags: ESDHC_FLAG_xx in include/fsl_esdhc.h
- * @caps: controller capabilities
- * @tuning_step: tuning step setting in tuning_ctrl register
- * @start_tuning_tap: the start point for tuning in tuning_ctrl register
- * @strobe_dll_delay_target: settings in strobe_dllctrl
- * @signal_voltage: indicating the current voltage
  * @cd_gpio: gpio for card detection
  * @wp_gpio: gpio for write protection
  */
@@ -124,7 +90,6 @@ struct fsl_esdhc_priv {
 	unsigned int sdhc_clk;
 	struct clk per_clk;
 	unsigned int clock;
-	unsigned int mode;
 	unsigned int bus_width;
 #if !CONFIG_IS_ENABLED(BLK)
 	struct mmc *mmc;
@@ -132,21 +97,6 @@ struct fsl_esdhc_priv {
 	struct udevice *dev;
 	int non_removable;
 	int wp_enable;
-	int vs18_enable;
-	u32 flags;
-	u32 caps;
-	u32 tuning_step;
-	u32 tuning_start_tap;
-	u32 strobe_dll_delay_target;
-	u32 signal_voltage;
-#if IS_ENABLED(CONFIG_DM_REGULATOR)
-	struct udevice *vqmmc_dev;
-	struct udevice *vmmc_dev;
-#endif
-#ifdef CONFIG_DM_GPIO
-	struct gpio_desc cd_gpio;
-	struct gpio_desc wp_gpio;
-#endif
 };
 
 /* Return the XFERTYP flags for a given command and data packet */
@@ -258,8 +208,7 @@ static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 {
 	int timeout;
 	struct fsl_esdhc *regs = priv->esdhc_regs;
-#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \
-	defined(CONFIG_IMX8) || defined(CONFIG_IMX8M)
+#if defined(CONFIG_FSL_LAYERSCAPE)
 	dma_addr_t addr;
 #endif
 	uint wml_value;
@@ -272,8 +221,7 @@ static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 
 		esdhc_clrsetbits32(&regs->wml, WML_RD_WML_MASK, wml_value);
 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
-#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \
-	defined(CONFIG_IMX8) || defined(CONFIG_IMX8M)
+#if defined(CONFIG_FSL_LAYERSCAPE)
 		addr = virt_to_phys((void *)(data->dest));
 		if (upper_32_bits(addr))
 			printf("Error found for upper 32 bits\n");
@@ -297,20 +245,12 @@ static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 				printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
 				return -ETIMEDOUT;
 			}
-		} else {
-#ifdef CONFIG_DM_GPIO
-			if (dm_gpio_is_valid(&priv->wp_gpio) && dm_gpio_get_value(&priv->wp_gpio)) {
-				printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
-				return -ETIMEDOUT;
-			}
-#endif
 		}
 
 		esdhc_clrsetbits32(&regs->wml, WML_WR_WML_MASK,
 					wml_value << 16);
 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
-#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \
-	defined(CONFIG_IMX8) || defined(CONFIG_IMX8M)
+#if defined(CONFIG_FSL_LAYERSCAPE)
 		addr = virt_to_phys((void *)(data->src));
 		if (upper_32_bits(addr))
 			printf("Error found for upper 32 bits\n");
@@ -375,8 +315,7 @@ static void check_and_invalidate_dcache_range
 	unsigned end = 0;
 	unsigned size = roundup(ARCH_DMA_MINALIGN,
 				data->blocks*data->blocksize);
-#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \
-	defined(CONFIG_IMX8) || defined(CONFIG_IMX8M)
+#if defined(CONFIG_FSL_LAYERSCAPE)
 	dma_addr_t addr;
 
 	addr = virt_to_phys((void *)(data->dest));
@@ -391,25 +330,6 @@ static void check_and_invalidate_dcache_range
 	invalidate_dcache_range(start, end);
 }
 
-#ifdef CONFIG_MCF5441x
-/*
- * Swaps 32-bit words to little-endian byte order.
- */
-static inline void sd_swap_dma_buff(struct mmc_data *data)
-{
-	int i, size = data->blocksize >> 2;
-	u32 *buffer = (u32 *)data->dest;
-	u32 sw;
-
-	while (data->blocks--) {
-		for (i = 0; i < size; i++) {
-			sw = __sw32(*buffer);
-			*buffer++ = sw;
-		}
-	}
-}
-#endif
-
 /*
  * Sends a command out on the bus.  Takes the mmc pointer,
  * a command pointer, and an optional data pointer.
@@ -466,14 +386,7 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 
 	/* Send the command */
 	esdhc_write32(&regs->cmdarg, cmd->cmdarg);
-#if defined(CONFIG_FSL_USDHC)
-	esdhc_write32(&regs->mixctrl,
-	(esdhc_read32(&regs->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F)
-			| (mmc->ddr_mode ? XFERTYP_DDREN : 0));
-	esdhc_write32(&regs->xfertyp, xfertyp & 0xFFFF0000);
-#else
 	esdhc_write32(&regs->xfertyp, xfertyp);
-#endif
 
 	if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) ||
 	    (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200))
@@ -500,15 +413,6 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 		goto out;
 	}
 
-	/* Switch voltage to 1.8V if CMD11 succeeded */
-	if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V) {
-		esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
-
-		printf("Run CMD11 1.8V switch\n");
-		/* Sleep for 5 ms - max time for card to switch to 1.8V */
-		udelay(5000);
-	}
-
 	/* Workaround for ESDHC errata ENGcm03648 */
 	if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
 		int timeout = 6000;
@@ -574,9 +478,6 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
 		 */
 		if (data->flags & MMC_DATA_READ) {
 			check_and_invalidate_dcache_range(cmd, data);
-#ifdef CONFIG_MCF5441x
-			sd_swap_dma_buff(data);
-#endif
 		}
 #endif
 	}
@@ -596,10 +497,6 @@ out:
 			while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTD))
 				;
 		}
-
-		/* If this was CMD11, then notify that power cycle is needed */
-		if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V)
-			printf("CMD11 to switch to 1.8V mode failed, card requires power cycle.\n");
 	}
 
 	esdhc_write32(&regs->irqstat, -1);
@@ -611,16 +508,7 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
 {
 	struct fsl_esdhc *regs = priv->esdhc_regs;
 	int div = 1;
-#ifdef ARCH_MXC
-#ifdef CONFIG_MX53
-	/* For i.MX53 eSDHCv3, SYSCTL.SDCLKFS may not be set to 0. */
-	int pre_div = (regs == (struct fsl_esdhc *)MMC_SDHC3_BASE_ADDR) ? 2 : 1;
-#else
-	int pre_div = 1;
-#endif
-#else
 	int pre_div = 2;
-#endif
 	int ddr_pre_div = mmc->ddr_mode ? 2 : 1;
 	int sdhc_clk = priv->sdhc_clk;
 	uint clk;
@@ -639,21 +527,13 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
 
 	clk = (pre_div << 8) | (div << 4);
 
-#ifdef CONFIG_FSL_USDHC
-	esdhc_clrbits32(&regs->vendorspec, VENDORSPEC_CKEN);
-#else
 	esdhc_clrbits32(&regs->sysctl, SYSCTL_CKEN);
-#endif
 
 	esdhc_clrsetbits32(&regs->sysctl, SYSCTL_CLOCK_MASK, clk);
 
 	udelay(10000);
 
-#ifdef CONFIG_FSL_USDHC
-	esdhc_setbits32(&regs->vendorspec, VENDORSPEC_PEREN | VENDORSPEC_CKEN);
-#else
 	esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
-#endif
 
 	priv->clock = clock;
 }
@@ -687,317 +567,20 @@ static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
 }
 #endif
 
-#ifdef MMC_SUPPORTS_TUNING
-static int esdhc_change_pinstate(struct udevice *dev)
-{
-	struct fsl_esdhc_priv *priv = dev_get_priv(dev);
-	int ret;
-
-	switch (priv->mode) {
-	case UHS_SDR50:
-	case UHS_DDR50:
-		ret = pinctrl_select_state(dev, "state_100mhz");
-		break;
-	case UHS_SDR104:
-	case MMC_HS_200:
-	case MMC_HS_400:
-		ret = pinctrl_select_state(dev, "state_200mhz");
-		break;
-	default:
-		ret = pinctrl_select_state(dev, "default");
-		break;
-	}
-
-	if (ret)
-		printf("%s %d error\n", __func__, priv->mode);
-
-	return ret;
-}
-
-static void esdhc_reset_tuning(struct mmc *mmc)
-{
-	struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
-	struct fsl_esdhc *regs = priv->esdhc_regs;
-
-	if (priv->flags & ESDHC_FLAG_USDHC) {
-		if (priv->flags & ESDHC_FLAG_STD_TUNING) {
-			esdhc_clrbits32(&regs->autoc12err,
-					MIX_CTRL_SMPCLK_SEL |
-					MIX_CTRL_EXE_TUNE);
-		}
-	}
-}
-
-static void esdhc_set_strobe_dll(struct mmc *mmc)
-{
-	struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
-	struct fsl_esdhc *regs = priv->esdhc_regs;
-	u32 val;
-
-	if (priv->clock > ESDHC_STROBE_DLL_CLK_FREQ) {
-		writel(ESDHC_STROBE_DLL_CTRL_RESET, &regs->strobe_dllctrl);
-
-		/*
-		 * enable strobe dll ctrl and adjust the delay target
-		 * for the uSDHC loopback read clock
-		 */
-		val = ESDHC_STROBE_DLL_CTRL_ENABLE |
-			(priv->strobe_dll_delay_target <<
-			 ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
-		writel(val, &regs->strobe_dllctrl);
-		/* wait 1us to make sure strobe dll status register stable */
-		mdelay(1);
-		val = readl(&regs->strobe_dllstat);
-		if (!(val & ESDHC_STROBE_DLL_STS_REF_LOCK))
-			pr_warn("HS400 strobe DLL status REF not lock!\n");
-		if (!(val & ESDHC_STROBE_DLL_STS_SLV_LOCK))
-			pr_warn("HS400 strobe DLL status SLV not lock!\n");
-	}
-}
-
-static int esdhc_set_timing(struct mmc *mmc)
-{
-	struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
-	struct fsl_esdhc *regs = priv->esdhc_regs;
-	u32 mixctrl;
-
-	mixctrl = readl(&regs->mixctrl);
-	mixctrl &= ~(MIX_CTRL_DDREN | MIX_CTRL_HS400_EN);
-
-	switch (mmc->selected_mode) {
-	case MMC_LEGACY:
-	case SD_LEGACY:
-		esdhc_reset_tuning(mmc);
-		writel(mixctrl, &regs->mixctrl);
-		break;
-	case MMC_HS_400:
-		mixctrl |= MIX_CTRL_DDREN | MIX_CTRL_HS400_EN;
-		writel(mixctrl, &regs->mixctrl);
-		esdhc_set_strobe_dll(mmc);
-		break;
-	case MMC_HS:
-	case MMC_HS_52:
-	case MMC_HS_200:
-	case SD_HS:
-	case UHS_SDR12:
-	case UHS_SDR25:
-	case UHS_SDR50:
-	case UHS_SDR104:
-		writel(mixctrl, &regs->mixctrl);
-		break;
-	case UHS_DDR50:
-	case MMC_DDR_52:
-		mixctrl |= MIX_CTRL_DDREN;
-		writel(mixctrl, &regs->mixctrl);
-		break;
-	default:
-		printf("Not supported %d\n", mmc->selected_mode);
-		return -EINVAL;
-	}
-
-	priv->mode = mmc->selected_mode;
-
-	return esdhc_change_pinstate(mmc->dev);
-}
-
-static int esdhc_set_voltage(struct mmc *mmc)
-{
-	struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
-	struct fsl_esdhc *regs = priv->esdhc_regs;
-	int ret;
-
-	priv->signal_voltage = mmc->signal_voltage;
-	switch (mmc->signal_voltage) {
-	case MMC_SIGNAL_VOLTAGE_330:
-		if (priv->vs18_enable)
-			return -EIO;
-#if CONFIG_IS_ENABLED(DM_REGULATOR)
-		if (!IS_ERR_OR_NULL(priv->vqmmc_dev)) {
-			ret = regulator_set_value(priv->vqmmc_dev, 3300000);
-			if (ret) {
-				printf("Setting to 3.3V error");
-				return -EIO;
-			}
-			/* Wait for 5ms */
-			mdelay(5);
-		}
-#endif
-
-		esdhc_clrbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
-		if (!(esdhc_read32(&regs->vendorspec) &
-		    ESDHC_VENDORSPEC_VSELECT))
-			return 0;
-
-		return -EAGAIN;
-	case MMC_SIGNAL_VOLTAGE_180:
-#if CONFIG_IS_ENABLED(DM_REGULATOR)
-		if (!IS_ERR_OR_NULL(priv->vqmmc_dev)) {
-			ret = regulator_set_value(priv->vqmmc_dev, 1800000);
-			if (ret) {
-				printf("Setting to 1.8V error");
-				return -EIO;
-			}
-		}
-#endif
-		esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
-		if (esdhc_read32(&regs->vendorspec) & ESDHC_VENDORSPEC_VSELECT)
-			return 0;
-
-		return -EAGAIN;
-	case MMC_SIGNAL_VOLTAGE_120:
-		return -ENOTSUPP;
-	default:
-		return 0;
-	}
-}
-
-static void esdhc_stop_tuning(struct mmc *mmc)
-{
-	struct mmc_cmd cmd;
-
-	cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
-	cmd.cmdarg = 0;
-	cmd.resp_type = MMC_RSP_R1b;
-
-	dm_mmc_send_cmd(mmc->dev, &cmd, NULL);
-}
-
-static int fsl_esdhc_execute_tuning(struct udevice *dev, uint32_t opcode)
-{
-	struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
-	struct fsl_esdhc_priv *priv = dev_get_priv(dev);
-	struct fsl_esdhc *regs = priv->esdhc_regs;
-	struct mmc *mmc = &plat->mmc;
-	u32 irqstaten = readl(&regs->irqstaten);
-	u32 irqsigen = readl(&regs->irqsigen);
-	int i, ret = -ETIMEDOUT;
-	u32 val, mixctrl;
-
-	/* clock tuning is not needed for upto 52MHz */
-	if (mmc->clock <= 52000000)
-		return 0;
-
-	/* This is readw/writew SDHCI_HOST_CONTROL2 when tuning */
-	if (priv->flags & ESDHC_FLAG_STD_TUNING) {
-		val = readl(&regs->autoc12err);
-		mixctrl = readl(&regs->mixctrl);
-		val &= ~MIX_CTRL_SMPCLK_SEL;
-		mixctrl &= ~(MIX_CTRL_FBCLK_SEL | MIX_CTRL_AUTO_TUNE_EN);
-
-		val |= MIX_CTRL_EXE_TUNE;
-		mixctrl |= MIX_CTRL_FBCLK_SEL | MIX_CTRL_AUTO_TUNE_EN;
-
-		writel(val, &regs->autoc12err);
-		writel(mixctrl, &regs->mixctrl);
-	}
-
-	/* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); */
-	mixctrl = readl(&regs->mixctrl);
-	mixctrl = MIX_CTRL_DTDSEL_READ | (mixctrl & ~MIX_CTRL_SDHCI_MASK);
-	writel(mixctrl, &regs->mixctrl);
-
-	writel(IRQSTATEN_BRR, &regs->irqstaten);
-	writel(IRQSTATEN_BRR, &regs->irqsigen);
-
-	/*
-	 * Issue opcode repeatedly till Execute Tuning is set to 0 or the number
-	 * of loops reaches 40 times.
-	 */
-	for (i = 0; i < MAX_TUNING_LOOP; i++) {
-		u32 ctrl;
-
-		if (opcode == MMC_CMD_SEND_TUNING_BLOCK_HS200) {
-			if (mmc->bus_width == 8)
-				writel(0x7080, &regs->blkattr);
-			else if (mmc->bus_width == 4)
-				writel(0x7040, &regs->blkattr);
-		} else {
-			writel(0x7040, &regs->blkattr);
-		}
-
-		/* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE) */
-		val = readl(&regs->mixctrl);
-		val = MIX_CTRL_DTDSEL_READ | (val & ~MIX_CTRL_SDHCI_MASK);
-		writel(val, &regs->mixctrl);
-
-		/* We are using STD tuning, no need to check return value */
-		mmc_send_tuning(mmc, opcode, NULL);
-
-		ctrl = readl(&regs->autoc12err);
-		if ((!(ctrl & MIX_CTRL_EXE_TUNE)) &&
-		    (ctrl & MIX_CTRL_SMPCLK_SEL)) {
-			/*
-			 * need to wait some time, make sure sd/mmc fininsh
-			 * send out tuning data, otherwise, the sd/mmc can't
-			 * response to any command when the card still out
-			 * put the tuning data.
-			 */
-			mdelay(1);
-			ret = 0;
-			break;
-		}
-
-		/* Add 1ms delay for SD and eMMC */
-		mdelay(1);
-	}
-
-	writel(irqstaten, &regs->irqstaten);
-	writel(irqsigen, &regs->irqsigen);
-
-	esdhc_stop_tuning(mmc);
-
-	return ret;
-}
-#endif
-
 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
 {
 	struct fsl_esdhc *regs = priv->esdhc_regs;
-	int ret __maybe_unused;
 
 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
 	/* Select to use peripheral clock */
 	esdhc_clock_control(priv, false);
-	esdhc_setbits32(&regs->scr, ESDHCCTL_PCS);
+	esdhc_setbits32(&regs->esdhcctl, ESDHCCTL_PCS);
 	esdhc_clock_control(priv, true);
 #endif
 	/* Set the clock speed */
 	if (priv->clock != mmc->clock)
 		set_sysctl(priv, mmc, mmc->clock);
 
-#ifdef MMC_SUPPORTS_TUNING
-	if (mmc->clk_disable) {
-#ifdef CONFIG_FSL_USDHC
-		esdhc_clrbits32(&regs->vendorspec, VENDORSPEC_CKEN);
-#else
-		esdhc_clrbits32(&regs->sysctl, SYSCTL_CKEN);
-#endif
-	} else {
-#ifdef CONFIG_FSL_USDHC
-		esdhc_setbits32(&regs->vendorspec, VENDORSPEC_PEREN |
-				VENDORSPEC_CKEN);
-#else
-		esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
-#endif
-	}
-
-	if (priv->mode != mmc->selected_mode) {
-		ret = esdhc_set_timing(mmc);
-		if (ret) {
-			printf("esdhc_set_timing error %d\n", ret);
-			return ret;
-		}
-	}
-
-	if (priv->signal_voltage != mmc->signal_voltage) {
-		ret = esdhc_set_voltage(mmc);
-		if (ret) {
-			printf("esdhc_set_voltage error %d\n", ret);
-			return ret;
-		}
-	}
-#endif
-
 	/* Set the bus width */
 	esdhc_clrbits32(&regs->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
 
@@ -1024,34 +607,10 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
 			return -ETIMEDOUT;
 	}
 
-#if defined(CONFIG_FSL_USDHC)
-	/* RSTA doesn't reset MMC_BOOT register, so manually reset it */
-	esdhc_write32(&regs->mmcboot, 0x0);
-	/* Reset MIX_CTRL and CLK_TUNE_CTRL_STATUS regs to 0 */
-	esdhc_write32(&regs->mixctrl, 0x0);
-	esdhc_write32(&regs->clktunectrlstatus, 0x0);
-
-	/* Put VEND_SPEC to default value */
-	if (priv->vs18_enable)
-		esdhc_write32(&regs->vendorspec, (VENDORSPEC_INIT |
-			      ESDHC_VENDORSPEC_VSELECT));
-	else
-		esdhc_write32(&regs->vendorspec, VENDORSPEC_INIT);
-
-	/* Disable DLL_CTRL delay line */
-	esdhc_write32(&regs->dllctrl, 0x0);
-#endif
-
-#ifndef ARCH_MXC
 	/* Enable cache snooping */
-	esdhc_write32(&regs->scr, 0x00000040);
-#endif
+	esdhc_write32(&regs->esdhcctl, 0x00000040);
 
-#ifndef CONFIG_FSL_USDHC
 	esdhc_setbits32(&regs->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
-#else
-	esdhc_setbits32(&regs->vendorspec, VENDORSPEC_HCKEN | VENDORSPEC_IPGEN);
-#endif
 
 	/* Set the initial clock speed */
 	mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
@@ -1059,12 +618,8 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
 	/* Disable the BRR and BWR bits in IRQSTAT */
 	esdhc_clrbits32(&regs->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
 
-#ifdef CONFIG_MCF5441x
-	esdhc_write32(&regs->proctl, PROCTL_INIT | PROCTL_D3CD);
-#else
 	/* Put the PROCTL reg back to the default */
 	esdhc_write32(&regs->proctl, PROCTL_INIT);
-#endif
 
 	/* Set timout to the maximum value */
 	esdhc_clrsetbits32(&regs->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
@@ -1085,10 +640,6 @@ static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
 #if CONFIG_IS_ENABLED(DM_MMC)
 	if (priv->non_removable)
 		return 1;
-#ifdef CONFIG_DM_GPIO
-	if (dm_gpio_is_valid(&priv->cd_gpio))
-		return dm_gpio_get_value(&priv->cd_gpio);
-#endif
 #endif
 
 	while (!(esdhc_read32(&regs->prsstat) & PRSSTAT_CINS) && --timeout)
@@ -1172,25 +723,8 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
 	if (ret)
 		return ret;
 
-#ifdef CONFIG_MCF5441x
-	/* ColdFire, using SDHC_DATA[3] for card detection */
-	esdhc_write32(&regs->proctl, PROCTL_INIT | PROCTL_D3CD);
-#endif
-
-#ifndef CONFIG_FSL_USDHC
-	esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN
-				| SYSCTL_IPGEN | SYSCTL_CKEN);
-	/* Clearing tuning bits in case ROM has set it already */
-	esdhc_write32(&regs->mixctrl, 0);
-	esdhc_write32(&regs->autoc12err, 0);
-	esdhc_write32(&regs->clktunectrlstatus, 0);
-#else
-	esdhc_setbits32(&regs->vendorspec, VENDORSPEC_PEREN |
-			VENDORSPEC_HCKEN | VENDORSPEC_IPGEN | VENDORSPEC_CKEN);
-#endif
-
-	if (priv->vs18_enable)
-		esdhc_setbits32(&regs->vendorspec, ESDHC_VENDORSPEC_VSELECT);
+	esdhc_setbits32(&regs->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN |
+				       SYSCTL_IPGEN | SYSCTL_CKEN);
 
 	writel(SDHCI_IRQ_EN_BITS, &regs->irqstaten);
 	cfg = &plat->cfg;
@@ -1201,15 +735,6 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
 	voltage_caps = 0;
 	caps = esdhc_read32(&regs->hostcapblt);
 
-#ifdef CONFIG_MCF5441x
-	/*
-	 * MCF5441x RM declares in more points that sdhc clock speed must
-	 * never exceed 25 Mhz. From this, the HS bit needs to be disabled
-	 * from host capabilities.
-	 */
-	caps &= ~ESDHC_HOSTCAPBLT_HSS;
-#endif
-
 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
 	caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
 			ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
@@ -1266,27 +791,11 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
 		cfg->host_caps &= ~MMC_MODE_8BIT;
 #endif
 
-	cfg->host_caps |= priv->caps;
-
 	cfg->f_min = 400000;
 	cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
 
 	cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
 
-	writel(0, &regs->dllctrl);
-	if (priv->flags & ESDHC_FLAG_USDHC) {
-		if (priv->flags & ESDHC_FLAG_STD_TUNING) {
-			u32 val = readl(&regs->tuning_ctrl);
-
-			val |= ESDHC_STD_TUNING_EN;
-			val &= ~ESDHC_TUNING_START_TAP_MASK;
-			val |= priv->tuning_start_tap;
-			val &= ~ESDHC_TUNING_STEP_MASK;
-			val |= (priv->tuning_step) << ESDHC_TUNING_STEP_SHIFT;
-			writel(val, &regs->tuning_ctrl);
-		}
-	}
-
 	return 0;
 }
 
@@ -1301,7 +810,6 @@ static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg,
 	priv->bus_width = cfg->max_bus_width;
 	priv->sdhc_clk = cfg->sdhc_clk;
 	priv->wp_enable  = cfg->wp_enable;
-	priv->vs18_enable  = cfg->vs18_enable;
 
 	return 0;
 };
@@ -1438,22 +946,11 @@ void fdt_fixup_esdhc(void *blob, bd_t *bd)
 #ifndef CONFIG_PPC
 #include <asm/arch/clock.h>
 #endif
-__weak void init_clk_usdhc(u32 index)
-{
-}
-
 static int fsl_esdhc_probe(struct udevice *dev)
 {
 	struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
 	struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
 	struct fsl_esdhc_priv *priv = dev_get_priv(dev);
-	const void *fdt = gd->fdt_blob;
-	int node = dev_of_offset(dev);
-	struct esdhc_soc_data *data =
-		(struct esdhc_soc_data *)dev_get_driver_data(dev);
-#if CONFIG_IS_ENABLED(DM_REGULATOR)
-	struct udevice *vqmmc_dev;
-#endif
 	fdt_addr_t addr;
 	unsigned int val;
 	struct mmc *mmc;
@@ -1468,11 +965,6 @@ static int fsl_esdhc_probe(struct udevice *dev)
 	priv->esdhc_regs = (struct fsl_esdhc *)addr;
 #endif
 	priv->dev = dev;
-	priv->mode = -1;
-	if (data) {
-		priv->flags = data->flags;
-		priv->caps = data->caps;
-	}
 
 	val = dev_read_u32_default(dev, "bus-width", -1);
 	if (val == 8)
@@ -1482,81 +974,13 @@ static int fsl_esdhc_probe(struct udevice *dev)
 	else
 		priv->bus_width = 1;
 
-	val = fdtdec_get_int(fdt, node, "fsl,tuning-step", 1);
-	priv->tuning_step = val;
-	val = fdtdec_get_int(fdt, node, "fsl,tuning-start-tap",
-			     ESDHC_TUNING_START_TAP_DEFAULT);
-	priv->tuning_start_tap = val;
-	val = fdtdec_get_int(fdt, node, "fsl,strobe-dll-delay-target",
-			     ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_DEFAULT);
-	priv->strobe_dll_delay_target = val;
-
 	if (dev_read_bool(dev, "non-removable")) {
 		priv->non_removable = 1;
 	 } else {
 		priv->non_removable = 0;
-#ifdef CONFIG_DM_GPIO
-		gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
-				     GPIOD_IS_IN);
-#endif
 	}
 
-	if (dev_read_prop(dev, "fsl,wp-controller", NULL)) {
-		priv->wp_enable = 1;
-	} else {
-		priv->wp_enable = 0;
-#ifdef CONFIG_DM_GPIO
-		gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
-				   GPIOD_IS_IN);
-#endif
-	}
-
-	priv->vs18_enable = 0;
-
-#if CONFIG_IS_ENABLED(DM_REGULATOR)
-	/*
-	 * If emmc I/O has a fixed voltage at 1.8V, this must be provided,
-	 * otherwise, emmc will work abnormally.
-	 */
-	ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev);
-	if (ret) {
-		dev_dbg(dev, "no vqmmc-supply\n");
-	} else {
-		ret = regulator_set_enable(vqmmc_dev, true);
-		if (ret) {
-			dev_err(dev, "fail to enable vqmmc-supply\n");
-			return ret;
-		}
-
-		if (regulator_get_value(vqmmc_dev) == 1800000)
-			priv->vs18_enable = 1;
-	}
-#endif
-
-	if (fdt_get_property(fdt, node, "no-1-8-v", NULL))
-		priv->caps &= ~(UHS_CAPS | MMC_MODE_HS200 | MMC_MODE_HS400);
-
-	/*
-	 * TODO:
-	 * Because lack of clk driver, if SDHC clk is not enabled,
-	 * need to enable it first before this driver is invoked.
-	 *
-	 * we use MXC_ESDHC_CLK to get clk freq.
-	 * If one would like to make this function work,
-	 * the aliases should be provided in dts as this:
-	 *
-	 *  aliases {
-	 *	mmc0 = &usdhc1;
-	 *	mmc1 = &usdhc2;
-	 *	mmc2 = &usdhc3;
-	 *	mmc3 = &usdhc4;
-	 *	};
-	 * Then if your board only supports mmc2 and mmc3, but we can
-	 * correctly get the seq as 2 and 3, then let mxc_get_clock
-	 * work as expected.
-	 */
-
-	init_clk_usdhc(dev->seq);
+	priv->wp_enable = 1;
 
 	if (IS_ENABLED(CONFIG_CLK)) {
 		/* Assigned clock already set clock */
@@ -1627,28 +1051,10 @@ static const struct dm_mmc_ops fsl_esdhc_ops = {
 	.get_cd		= fsl_esdhc_get_cd,
 	.send_cmd	= fsl_esdhc_send_cmd,
 	.set_ios	= fsl_esdhc_set_ios,
-#ifdef MMC_SUPPORTS_TUNING
-	.execute_tuning	= fsl_esdhc_execute_tuning,
-#endif
 };
 #endif
 
-static struct esdhc_soc_data usdhc_imx7d_data = {
-	.flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
-			| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
-			| ESDHC_FLAG_HS400,
-	.caps = UHS_CAPS | MMC_MODE_HS200 | MMC_MODE_DDR_52MHz |
-		MMC_MODE_HS_52MHz | MMC_MODE_HS,
-};
-
 static const struct udevice_id fsl_esdhc_ids[] = {
-	{ .compatible = "fsl,imx53-esdhc", },
-	{ .compatible = "fsl,imx6ul-usdhc", },
-	{ .compatible = "fsl,imx6sx-usdhc", },
-	{ .compatible = "fsl,imx6sl-usdhc", },
-	{ .compatible = "fsl,imx6q-usdhc", },
-	{ .compatible = "fsl,imx7d-usdhc", .data = (ulong)&usdhc_imx7d_data,},
-	{ .compatible = "fsl,imx7ulp-usdhc", },
 	{ .compatible = "fsl,esdhc", },
 	{ /* sentinel */ }
 };
diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
index 8dbd524..7d7e946 100644
--- a/include/fsl_esdhc.h
+++ b/include/fsl_esdhc.h
@@ -9,7 +9,6 @@
 #ifndef  __FSL_ESDHC_H__
 #define	__FSL_ESDHC_H__
 
-#include <linux/bitops.h>
 #include <linux/errno.h>
 #include <asm/byteorder.h>
 
@@ -25,22 +24,14 @@
 #define SYSCTL_INITA		0x08000000
 #define SYSCTL_TIMEOUT_MASK	0x000f0000
 #define SYSCTL_CLOCK_MASK	0x0000fff0
-#if !defined(CONFIG_FSL_USDHC)
 #define SYSCTL_CKEN		0x00000008
 #define SYSCTL_PEREN		0x00000004
 #define SYSCTL_HCKEN		0x00000002
 #define SYSCTL_IPGEN		0x00000001
-#endif
 #define SYSCTL_RSTA		0x01000000
 #define SYSCTL_RSTC		0x02000000
 #define SYSCTL_RSTD		0x04000000
 
-#define VENDORSPEC_CKEN		0x00004000
-#define VENDORSPEC_PEREN	0x00002000
-#define VENDORSPEC_HCKEN	0x00001000
-#define VENDORSPEC_IPGEN	0x00000800
-#define VENDORSPEC_INIT		0x20007809
-
 #define IRQSTAT			0x0002e030
 #define IRQSTAT_DMAE		(0x10000000)
 #define IRQSTAT_AC12E		(0x01000000)
@@ -172,54 +163,6 @@
 #define ESDHC_HOSTCAPBLT_DMAS	0x00400000
 #define ESDHC_HOSTCAPBLT_HSS	0x00200000
 
-#define ESDHC_VENDORSPEC_VSELECT 0x00000002 /* Use 1.8V */
-
-/* Imported from Linux Kernel drivers/mmc/host/sdhci-esdhc-imx.c */
-#define	MIX_CTRL_DDREN		BIT(3)
-#define MIX_CTRL_DTDSEL_READ	BIT(4)
-#define	MIX_CTRL_AC23EN		BIT(7)
-#define	MIX_CTRL_EXE_TUNE	BIT(22)
-#define	MIX_CTRL_SMPCLK_SEL	BIT(23)
-#define	MIX_CTRL_AUTO_TUNE_EN	BIT(24)
-#define	MIX_CTRL_FBCLK_SEL	BIT(25)
-#define	MIX_CTRL_HS400_EN	BIT(26)
-#define	MIX_CTRL_HS400_ES	BIT(27)
-/* Bits 3 and 6 are not SDHCI standard definitions */
-#define	MIX_CTRL_SDHCI_MASK	0xb7
-/* Tuning bits */
-#define	MIX_CTRL_TUNING_MASK	0x03c00000
-
-/* strobe dll register */
-#define ESDHC_STROBE_DLL_CTRL		0x70
-#define ESDHC_STROBE_DLL_CTRL_ENABLE	BIT(0)
-#define ESDHC_STROBE_DLL_CTRL_RESET	BIT(1)
-#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_DEFAULT	0x7
-#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT	3
-
-#define ESDHC_STROBE_DLL_STATUS		0x74
-#define ESDHC_STROBE_DLL_STS_REF_LOCK	BIT(1)
-#define ESDHC_STROBE_DLL_STS_SLV_LOCK	0x1
-#define ESDHC_STROBE_DLL_CLK_FREQ	100000000
-
-#define ESDHC_STD_TUNING_EN             BIT(24)
-/* NOTE: the minimum valid tuning start tap for mx6sl is 1 */
-#define ESDHC_TUNING_START_TAP_DEFAULT	0x1
-#define ESDHC_TUNING_START_TAP_MASK	0xff
-#define ESDHC_TUNING_STEP_MASK		0x00070000
-#define ESDHC_TUNING_STEP_SHIFT		16
-
-#define	ESDHC_FLAG_MULTIBLK_NO_INT	BIT(1)
-#define	ESDHC_FLAG_ENGCM07207		BIT(2)
-#define	ESDHC_FLAG_USDHC		BIT(3)
-#define	ESDHC_FLAG_MAN_TUNING		BIT(4)
-#define	ESDHC_FLAG_STD_TUNING		BIT(5)
-#define	ESDHC_FLAG_HAVE_CAP1		BIT(6)
-#define	ESDHC_FLAG_ERR004536		BIT(7)
-#define	ESDHC_FLAG_HS200		BIT(8)
-#define	ESDHC_FLAG_HS400		BIT(9)
-#define	ESDHC_FLAG_ERR010450		BIT(10)
-#define	ESDHC_FLAG_HS400_ES		BIT(11)
-
 struct fsl_esdhc_cfg {
 	phys_addr_t esdhc_base;
 	u32	sdhc_clk;
-- 
2.7.4

More information about the U-Boot mailing list