Dropped i.MX code which couldn't be reused.
Signed-off-by: Yangbo Lu yangbo.lu@nxp.com Tested-by: Steffen Dirkwinkel s.dirkwinkel@beckhoff.com Acked-by: Peng Fan peng.fan@nxp.com Reviewed-by: Martyn Welch martyn.welch@collabora.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. Changes for v7: - Rebased. - Added Reviewed-by. Changes for v8: - None. --- drivers/mmc/fsl_esdhc.c | 625 ++---------------------------------------------- include/fsl_esdhc.h | 57 ----- 2 files changed, 16 insertions(+), 666 deletions(-)
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 6a191a1..0731847 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -17,14 +17,11 @@ #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>
#if !CONFIG_IS_ENABLED(BLK) #include "mmc_private.h" @@ -38,7 +35,6 @@ DECLARE_GLOBAL_DATA_PTR; IRQSTATEN_CIE | IRQSTATEN_DTOE | IRQSTATEN_DCE | \ IRQSTATEN_DEBE | IRQSTATEN_BRR | IRQSTATEN_BWR | \ IRQSTATEN_DINT) -#define MAX_TUNING_LOOP 40 #define ESDHC_DRIVER_STAGE_VALUE 0xffffffff
struct fsl_esdhc { @@ -60,37 +56,20 @@ 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 { @@ -98,11 +77,6 @@ struct fsl_esdhc_plat { struct mmc mmc; };
-struct esdhc_soc_data { - u32 flags; - u32 caps; -}; - /** * struct fsl_esdhc_priv * @@ -115,13 +89,6 @@ 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 */ @@ -130,7 +97,6 @@ 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; @@ -138,21 +104,6 @@ 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 */ @@ -264,8 +215,7 @@ 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; @@ -278,8 +228,7 @@ static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
esdhc_clrsetbits32(®s->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"); @@ -303,20 +252,12 @@ 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(®s->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"); @@ -381,8 +322,7 @@ 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)); @@ -397,25 +337,6 @@ 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. @@ -472,14 +393,7 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
/* Send the command */ esdhc_write32(®s->cmdarg, cmd->cmdarg); -#if defined(CONFIG_FSL_USDHC) - esdhc_write32(®s->mixctrl, - (esdhc_read32(®s->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F) - | (mmc->ddr_mode ? XFERTYP_DDREN : 0)); - esdhc_write32(®s->xfertyp, xfertyp & 0xFFFF0000); -#else esdhc_write32(®s->xfertyp, xfertyp); -#endif
if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) || (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)) @@ -506,15 +420,6 @@ 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(®s->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; @@ -580,9 +485,6 @@ 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 } @@ -602,10 +504,6 @@ out: while ((esdhc_read32(®s->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(®s->irqstat, -1); @@ -617,16 +515,7 @@ 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; @@ -645,21 +534,13 @@ 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(®s->vendorspec, VENDORSPEC_CKEN); -#else esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN); -#endif
esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
udelay(10000);
-#ifdef CONFIG_FSL_USDHC - esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN | VENDORSPEC_CKEN); -#else esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN); -#endif
priv->clock = clock; } @@ -693,317 +574,20 @@ 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(®s->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, ®s->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, ®s->strobe_dllctrl); - /* wait 1us to make sure strobe dll status register stable */ - mdelay(1); - val = readl(®s->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(®s->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, ®s->mixctrl); - break; - case MMC_HS_400: - mixctrl |= MIX_CTRL_DDREN | MIX_CTRL_HS400_EN; - writel(mixctrl, ®s->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, ®s->mixctrl); - break; - case UHS_DDR50: - case MMC_DDR_52: - mixctrl |= MIX_CTRL_DDREN; - writel(mixctrl, ®s->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(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT); - if (!(esdhc_read32(®s->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(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT); - if (esdhc_read32(®s->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(®s->irqstaten); - u32 irqsigen = readl(®s->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(®s->autoc12err); - mixctrl = readl(®s->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, ®s->autoc12err); - writel(mixctrl, ®s->mixctrl); - } - - /* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); */ - mixctrl = readl(®s->mixctrl); - mixctrl = MIX_CTRL_DTDSEL_READ | (mixctrl & ~MIX_CTRL_SDHCI_MASK); - writel(mixctrl, ®s->mixctrl); - - writel(IRQSTATEN_BRR, ®s->irqstaten); - writel(IRQSTATEN_BRR, ®s->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, ®s->blkattr); - else if (mmc->bus_width == 4) - writel(0x7040, ®s->blkattr); - } else { - writel(0x7040, ®s->blkattr); - } - - /* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE) */ - val = readl(®s->mixctrl); - val = MIX_CTRL_DTDSEL_READ | (val & ~MIX_CTRL_SDHCI_MASK); - writel(val, ®s->mixctrl); - - /* We are using STD tuning, no need to check return value */ - mmc_send_tuning(mmc, opcode, NULL); - - ctrl = readl(®s->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, ®s->irqstaten); - writel(irqsigen, ®s->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(®s->scr, ESDHCCTL_PCS); + esdhc_setbits32(®s->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(®s->vendorspec, VENDORSPEC_CKEN); -#else - esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN); -#endif - } else { -#ifdef CONFIG_FSL_USDHC - esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN | - VENDORSPEC_CKEN); -#else - esdhc_setbits32(®s->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(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
@@ -1030,34 +614,10 @@ 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(®s->mmcboot, 0x0); - /* Reset MIX_CTRL and CLK_TUNE_CTRL_STATUS regs to 0 */ - esdhc_write32(®s->mixctrl, 0x0); - esdhc_write32(®s->clktunectrlstatus, 0x0); - - /* Put VEND_SPEC to default value */ - if (priv->vs18_enable) - esdhc_write32(®s->vendorspec, (VENDORSPEC_INIT | - ESDHC_VENDORSPEC_VSELECT)); - else - esdhc_write32(®s->vendorspec, VENDORSPEC_INIT); - - /* Disable DLL_CTRL delay line */ - esdhc_write32(®s->dllctrl, 0x0); -#endif - -#ifndef ARCH_MXC /* Enable cache snooping */ - esdhc_write32(®s->scr, 0x00000040); -#endif + esdhc_write32(®s->esdhcctl, 0x00000040);
-#ifndef CONFIG_FSL_USDHC esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN); -#else - esdhc_setbits32(®s->vendorspec, VENDORSPEC_HCKEN | VENDORSPEC_IPGEN); -#endif
/* Set the initial clock speed */ mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE); @@ -1065,12 +625,8 @@ static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) /* Disable the BRR and BWR bits in IRQSTAT */ esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
-#ifdef CONFIG_MCF5441x - esdhc_write32(®s->proctl, PROCTL_INIT | PROCTL_D3CD); -#else /* Put the PROCTL reg back to the default */ esdhc_write32(®s->proctl, PROCTL_INIT); -#endif
/* Set timout to the maximum value */ esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16); @@ -1091,10 +647,6 @@ 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(®s->prsstat) & PRSSTAT_CINS) && --timeout) @@ -1178,25 +730,8 @@ 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(®s->proctl, PROCTL_INIT | PROCTL_D3CD); -#endif - -#ifndef CONFIG_FSL_USDHC - esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN - | SYSCTL_IPGEN | SYSCTL_CKEN); - /* Clearing tuning bits in case ROM has set it already */ - esdhc_write32(®s->mixctrl, 0); - esdhc_write32(®s->autoc12err, 0); - esdhc_write32(®s->clktunectrlstatus, 0); -#else - esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN | - VENDORSPEC_HCKEN | VENDORSPEC_IPGEN | VENDORSPEC_CKEN); -#endif - - if (priv->vs18_enable) - esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT); + esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN | + SYSCTL_IPGEN | SYSCTL_CKEN);
writel(SDHCI_IRQ_EN_BITS, ®s->irqstaten); cfg = &plat->cfg; @@ -1207,15 +742,6 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv, voltage_caps = 0; caps = esdhc_read32(®s->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); @@ -1272,27 +798,11 @@ 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, ®s->dllctrl); - if (priv->flags & ESDHC_FLAG_USDHC) { - if (priv->flags & ESDHC_FLAG_STD_TUNING) { - u32 val = readl(®s->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, ®s->tuning_ctrl); - } - } - return 0; }
@@ -1307,7 +817,6 @@ 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; }; @@ -1444,22 +953,11 @@ 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; @@ -1477,11 +975,6 @@ 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) @@ -1491,81 +984,13 @@ 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 */ @@ -1656,28 +1081,10 @@ 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;