X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fmmc%2Ffsl_esdhc.c;h=1a006fa95f20261a31535c88ee97b06eccce1bd8;hb=83d290c56fab2d38cd1ab4c4cc7099559c1d5046;hp=5ee712f09baca87f6415dc8d24b23dbfada1cc82;hpb=541f538f4ca50082f77f7f34f05950d57804b1cc;p=platform%2Fkernel%2Fu-boot.git diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 5ee712f..1a006fa 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc * Andy Fleming @@ -5,8 +6,6 @@ * Based vaguely on the pxa mmc code: * (C) Copyright 2003 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net - * - * SPDX-License-Identifier: GPL-2.0+ */ #include @@ -16,12 +15,14 @@ #include #include #include +#include #include #include #include #include #include #include +#include DECLARE_GLOBAL_DATA_PTR; @@ -31,6 +32,7 @@ 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 */ @@ -60,26 +62,40 @@ struct fsl_esdhc { uint dllctrl; uint dllstat; uint clktunectrlstatus; - char reserved3[84]; + char reserved3[4]; + uint strobe_dllctrl; + uint strobe_dllstat; + char reserved4[72]; uint vendorspec; uint mmcboot; uint vendorspec2; - char reserved4[48]; + uint tuning_ctrl; /* on i.MX6/7/8 */ + char reserved5[44]; uint hostver; /* Host controller version register */ - char reserved5[4]; /* reserved */ - uint dmaerraddr; /* DMA error address register */ char reserved6[4]; /* reserved */ - uint dmaerrattr; /* DMA error attribute register */ + uint dmaerraddr; /* DMA error address register */ char reserved7[4]; /* reserved */ + uint dmaerrattr; /* DMA error attribute register */ + char reserved8[4]; /* reserved */ uint hostcapblt2; /* Host controller capabilities register 2 */ - char reserved8[8]; /* reserved */ + char reserved9[8]; /* reserved */ uint tcr; /* Tuning control register */ - char reserved9[28]; /* reserved */ + char reserved10[28]; /* reserved */ uint sddirctl; /* SD direction control register */ - char reserved10[712];/* reserved */ + char reserved11[712];/* reserved */ uint scr; /* eSDHC control register */ }; +struct fsl_esdhc_plat { + struct mmc_config cfg; + struct mmc mmc; +}; + +struct esdhc_soc_data { + u32 flags; + u32 caps; +}; + /** * struct fsl_esdhc_priv * @@ -92,18 +108,39 @@ struct fsl_esdhc { * @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 */ struct fsl_esdhc_priv { struct fsl_esdhc *esdhc_regs; unsigned int sdhc_clk; + unsigned int clock; + unsigned int mode; unsigned int bus_width; - struct mmc_config cfg; +#if !CONFIG_IS_ENABLED(BLK) struct mmc *mmc; +#endif 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; @@ -153,30 +190,29 @@ static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data) /* * PIO Read/Write Mode reduce the performace as DMA is not used in this mode. */ -static void -esdhc_pio_read_write(struct mmc *mmc, struct mmc_data *data) +static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv, + struct mmc_data *data) { - struct fsl_esdhc_priv *priv = mmc->priv; struct fsl_esdhc *regs = priv->esdhc_regs; uint blocks; char *buffer; uint databuf; uint size; uint irqstat; - uint timeout; + ulong start; if (data->flags & MMC_DATA_READ) { blocks = data->blocks; buffer = data->dest; while (blocks) { - timeout = PIO_TIMEOUT; + start = get_timer(0); size = data->blocksize; irqstat = esdhc_read32(®s->irqstat); - while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN) - && --timeout); - if (timeout <= 0) { - printf("\nData Read Failed in PIO Mode."); - return; + while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) { + if (get_timer(start) > PIO_TIMEOUT) { + printf("\nData Read Failed in PIO Mode."); + return; + } } while (size && (!(irqstat & IRQSTAT_TC))) { udelay(100); /* Wait before last byte transfer complete */ @@ -192,14 +228,14 @@ esdhc_pio_read_write(struct mmc *mmc, struct mmc_data *data) blocks = data->blocks; buffer = (char *)data->src; while (blocks) { - timeout = PIO_TIMEOUT; + start = get_timer(0); size = data->blocksize; irqstat = esdhc_read32(®s->irqstat); - while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN) - && --timeout); - if (timeout <= 0) { - printf("\nData Write Failed in PIO Mode."); - return; + while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) { + if (get_timer(start) > PIO_TIMEOUT) { + printf("\nData Write Failed in PIO Mode."); + return; + } } while (size && (!(irqstat & IRQSTAT_TC))) { udelay(100); /* Wait before last byte transfer complete */ @@ -215,12 +251,13 @@ esdhc_pio_read_write(struct mmc *mmc, struct mmc_data *data) } #endif -static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data) +static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc, + struct mmc_data *data) { int timeout; - struct fsl_esdhc_priv *priv = mmc->priv; struct fsl_esdhc *regs = priv->esdhc_regs; -#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) +#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \ + defined(CONFIG_MX8M) dma_addr_t addr; #endif uint wml_value; @@ -233,7 +270,8 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data) 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) +#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \ + defined(CONFIG_MX8M) addr = virt_to_phys((void *)(data->dest)); if (upper_32_bits(addr)) printf("Error found for upper 32 bits\n"); @@ -262,7 +300,8 @@ static int esdhc_setup_data(struct mmc *mmc, struct mmc_data *data) 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) +#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \ + defined(CONFIG_MX8M) addr = virt_to_phys((void *)(data->src)); if (upper_32_bits(addr)) printf("Error found for upper 32 bits\n"); @@ -327,7 +366,8 @@ 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) +#if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234) || \ + defined(CONFIG_MX8M) dma_addr_t addr; addr = virt_to_phys((void *)(data->dest)); @@ -346,13 +386,13 @@ static void check_and_invalidate_dcache_range * Sends a command out on the bus. Takes the mmc pointer, * a command pointer, and an optional data pointer. */ -static int -esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) +static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, + struct mmc_cmd *cmd, struct mmc_data *data) { int err = 0; uint xfertyp; uint irqstat; - struct fsl_esdhc_priv *priv = mmc->priv; + u32 flags = IRQSTAT_CC | IRQSTAT_CTOE; struct fsl_esdhc *regs = priv->esdhc_regs; #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111 @@ -381,7 +421,7 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Set up for a data transfer if we have one */ if (data) { - err = esdhc_setup_data(mmc, data); + err = esdhc_setup_data(priv, mmc, data); if(err) return err; @@ -406,8 +446,12 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) esdhc_write32(®s->xfertyp, xfertyp); #endif + if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) || + (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)) + flags = IRQSTAT_BRR; + /* Wait for the command to complete */ - while (!(esdhc_read32(®s->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE))) + while (!(esdhc_read32(®s->irqstat) & flags)) ; irqstat = esdhc_read32(®s->irqstat); @@ -467,8 +511,14 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Wait until all of the blocks are transferred */ if (data) { #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO - esdhc_pio_read_write(mmc, data); + esdhc_pio_read_write(priv, data); #else + flags = DATA_COMPLETE; + if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) || + (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)) { + flags = IRQSTAT_BRR; + } + do { irqstat = esdhc_read32(®s->irqstat); @@ -481,7 +531,7 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) err = -ECOMM; goto out; } - } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE); + } while ((irqstat & flags) != flags); /* * Need invalidate the dcache here again to avoid any @@ -519,29 +569,34 @@ out: return err; } -static void set_sysctl(struct mmc *mmc, uint clock) +static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock) { - int div, pre_div; - struct fsl_esdhc_priv *priv = mmc->priv; 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; if (clock < mmc->cfg->f_min) clock = mmc->cfg->f_min; - if (sdhc_clk / 16 > clock) { - for (pre_div = 2; pre_div < 256; pre_div *= 2) - if ((sdhc_clk / pre_div) <= (clock * 16)) - break; - } else - pre_div = 2; + while (sdhc_clk / (16 * pre_div * ddr_pre_div) > clock && pre_div < 256) + pre_div *= 2; - for (div = 1; div <= 16; div++) - if ((sdhc_clk / (div * pre_div)) <= clock) - break; + while (sdhc_clk / (div * pre_div * ddr_pre_div) > clock && div < 16) + div++; - pre_div >>= mmc->ddr_mode ? 2 : 1; + pre_div >>= 1; div -= 1; clk = (pre_div << 8) | (div << 4); @@ -562,12 +617,12 @@ static void set_sysctl(struct mmc *mmc, uint clock) esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN); #endif + priv->clock = clock; } #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK -static void esdhc_clock_control(struct mmc *mmc, bool enable) +static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable) { - struct fsl_esdhc_priv *priv = mmc->priv; struct fsl_esdhc *regs = priv->esdhc_regs; u32 value; u32 time_out; @@ -594,19 +649,282 @@ static void esdhc_clock_control(struct mmc *mmc, bool enable) } #endif -static int esdhc_set_ios(struct mmc *mmc) +#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: + 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 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); + 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; +#ifdef CONFIG_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: +#ifdef CONFIG_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_priv *priv = mmc->priv; 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(mmc, false); + esdhc_clock_control(priv, false); esdhc_setbits32(®s->scr, ESDHCCTL_PCS); - esdhc_clock_control(mmc, true); + esdhc_clock_control(priv, true); #endif /* Set the clock speed */ - set_sysctl(mmc, mmc->clock); + 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); @@ -619,18 +937,20 @@ static int esdhc_set_ios(struct mmc *mmc) return 0; } -static int esdhc_init(struct mmc *mmc) +static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc) { - struct fsl_esdhc_priv *priv = mmc->priv; struct fsl_esdhc *regs = priv->esdhc_regs; - int timeout = 1000; + ulong start; /* Reset the entire host controller */ esdhc_setbits32(®s->sysctl, SYSCTL_RSTA); /* Wait until the controller is available */ - while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA) && --timeout) - udelay(1000); + start = get_timer(0); + while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) { + if (get_timer(start) > 1000) + return -ETIMEDOUT; + } #if defined(CONFIG_FSL_USDHC) /* RSTA doesn't reset MMC_BOOT register, so manually reset it */ @@ -640,7 +960,11 @@ static int esdhc_init(struct mmc *mmc) esdhc_write32(®s->clktunectrlstatus, 0x0); /* Put VEND_SPEC to default value */ - esdhc_write32(®s->vendorspec, VENDORSPEC_INIT); + 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); @@ -658,7 +982,7 @@ static int esdhc_init(struct mmc *mmc) #endif /* Set the initial clock speed */ - mmc_set_clock(mmc, 400000); + mmc_set_clock(mmc, 400000, false); /* Disable the BRR and BWR bits in IRQSTAT */ esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR); @@ -669,16 +993,11 @@ static int esdhc_init(struct mmc *mmc) /* Set timout to the maximum value */ esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16); -#ifdef CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT - esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT); -#endif - return 0; } -static int esdhc_getcd(struct mmc *mmc) +static int esdhc_getcd_common(struct fsl_esdhc_priv *priv) { - struct fsl_esdhc_priv *priv = mmc->priv; struct fsl_esdhc *regs = priv->esdhc_regs; int timeout = 1000; @@ -687,7 +1006,7 @@ static int esdhc_getcd(struct mmc *mmc) return 1; #endif -#ifdef CONFIG_DM_MMC +#if CONFIG_IS_ENABLED(DM_MMC) if (priv->non_removable) return 1; #ifdef CONFIG_DM_GPIO @@ -702,46 +1021,70 @@ static int esdhc_getcd(struct mmc *mmc) return timeout > 0; } -static void esdhc_reset(struct fsl_esdhc *regs) +static int esdhc_reset(struct fsl_esdhc *regs) { - unsigned long timeout = 100; /* wait max 100 ms */ + ulong start; /* reset the controller */ esdhc_setbits32(®s->sysctl, SYSCTL_RSTA); /* hardware clears the bit when it is done */ - while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA) && --timeout) - udelay(1000); - if (!timeout) - printf("MMC/SD: Reset never completed.\n"); + start = get_timer(0); + while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) { + if (get_timer(start) > 100) { + printf("MMC/SD: Reset never completed.\n"); + return -ETIMEDOUT; + } + } + + return 0; } -static const struct mmc_ops esdhc_ops = { - .send_cmd = esdhc_send_cmd, - .set_ios = esdhc_set_ios, - .init = esdhc_init, - .getcd = esdhc_getcd, -}; +#if !CONFIG_IS_ENABLED(DM_MMC) +static int esdhc_getcd(struct mmc *mmc) +{ + struct fsl_esdhc_priv *priv = mmc->priv; -static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg, - struct fsl_esdhc_priv *priv) + return esdhc_getcd_common(priv); +} + +static int esdhc_init(struct mmc *mmc) { - if (!cfg || !priv) - return -EINVAL; + struct fsl_esdhc_priv *priv = mmc->priv; - priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base); - priv->bus_width = cfg->max_bus_width; - priv->sdhc_clk = cfg->sdhc_clk; - priv->wp_enable = cfg->wp_enable; + return esdhc_init_common(priv, mmc); +} - return 0; +static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + struct fsl_esdhc_priv *priv = mmc->priv; + + return esdhc_send_cmd_common(priv, mmc, cmd, data); +} + +static int esdhc_set_ios(struct mmc *mmc) +{ + struct fsl_esdhc_priv *priv = mmc->priv; + + return esdhc_set_ios_common(priv, mmc); +} + +static const struct mmc_ops esdhc_ops = { + .getcd = esdhc_getcd, + .init = esdhc_init, + .send_cmd = esdhc_send_cmd, + .set_ios = esdhc_set_ios, }; +#endif -static int fsl_esdhc_init(struct fsl_esdhc_priv *priv) +static int fsl_esdhc_init(struct fsl_esdhc_priv *priv, + struct fsl_esdhc_plat *plat) { + struct mmc_config *cfg; struct fsl_esdhc *regs; - struct mmc *mmc; u32 caps, voltage_caps; + int ret; if (!priv) return -EINVAL; @@ -749,18 +1092,30 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv) regs = priv->esdhc_regs; /* First reset the eSDHC controller */ - esdhc_reset(regs); + ret = esdhc_reset(regs); + if (ret) + return ret; #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); + writel(SDHCI_IRQ_EN_BITS, ®s->irqstaten); - memset(&priv->cfg, 0, sizeof(priv->cfg)); + cfg = &plat->cfg; +#ifndef CONFIG_DM_MMC + memset(cfg, '\0', sizeof(*cfg)); +#endif voltage_caps = 0; caps = esdhc_read32(®s->hostcapblt); @@ -782,60 +1137,90 @@ static int fsl_esdhc_init(struct fsl_esdhc_priv *priv) if (caps & ESDHC_HOSTCAPBLT_VS33) voltage_caps |= MMC_VDD_32_33 | MMC_VDD_33_34; - priv->cfg.name = "FSL_SDHC"; - priv->cfg.ops = &esdhc_ops; + cfg->name = "FSL_SDHC"; +#if !CONFIG_IS_ENABLED(DM_MMC) + cfg->ops = &esdhc_ops; +#endif #ifdef CONFIG_SYS_SD_VOLTAGE - priv->cfg.voltages = CONFIG_SYS_SD_VOLTAGE; + cfg->voltages = CONFIG_SYS_SD_VOLTAGE; #else - priv->cfg.voltages = MMC_VDD_32_33 | MMC_VDD_33_34; + cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34; #endif - if ((priv->cfg.voltages & voltage_caps) == 0) { + if ((cfg->voltages & voltage_caps) == 0) { printf("voltage not supported by controller\n"); return -1; } if (priv->bus_width == 8) - priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT; + cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT; else if (priv->bus_width == 4) - priv->cfg.host_caps = MMC_MODE_4BIT; + cfg->host_caps = MMC_MODE_4BIT; - priv->cfg.host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT; + cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT; #ifdef CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE - priv->cfg.host_caps |= MMC_MODE_DDR_52MHz; + cfg->host_caps |= MMC_MODE_DDR_52MHz; #endif if (priv->bus_width > 0) { if (priv->bus_width < 8) - priv->cfg.host_caps &= ~MMC_MODE_8BIT; + cfg->host_caps &= ~MMC_MODE_8BIT; if (priv->bus_width < 4) - priv->cfg.host_caps &= ~MMC_MODE_4BIT; + cfg->host_caps &= ~MMC_MODE_4BIT; } if (caps & ESDHC_HOSTCAPBLT_HSS) - priv->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; + cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK) - priv->cfg.host_caps &= ~MMC_MODE_8BIT; + cfg->host_caps &= ~MMC_MODE_8BIT; #endif - priv->cfg.f_min = 400000; - priv->cfg.f_max = min(priv->sdhc_clk, (u32)52000000); + cfg->host_caps |= priv->caps; - priv->cfg.b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; + cfg->f_min = 400000; + cfg->f_max = min(priv->sdhc_clk, (u32)200000000); - mmc = mmc_create(&priv->cfg, priv); - if (mmc == NULL) - return -1; + cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; - priv->mmc = mmc; + 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; } +#if !CONFIG_IS_ENABLED(DM_MMC) +static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg, + struct fsl_esdhc_priv *priv) +{ + if (!cfg || !priv) + return -EINVAL; + + priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base); + 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; +}; + int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg) { + struct fsl_esdhc_plat *plat; struct fsl_esdhc_priv *priv; + struct mmc *mmc; int ret; if (!cfg) @@ -844,21 +1229,34 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg) priv = calloc(sizeof(struct fsl_esdhc_priv), 1); if (!priv) return -ENOMEM; + plat = calloc(sizeof(struct fsl_esdhc_plat), 1); + if (!plat) { + free(priv); + return -ENOMEM; + } ret = fsl_esdhc_cfg_to_priv(cfg, priv); if (ret) { debug("%s xlate failure\n", __func__); + free(plat); free(priv); return ret; } - ret = fsl_esdhc_init(priv); + ret = fsl_esdhc_init(priv, plat); if (ret) { debug("%s init failure\n", __func__); + free(plat); free(priv); return ret; } + mmc = mmc_create(&plat->cfg, priv); + if (!mmc) + return -EIO; + + priv->mmc = mmc; + return 0; } @@ -871,6 +1269,7 @@ int fsl_esdhc_mmc_init(bd_t *bis) cfg->sdhc_clk = gd->arch.sdhc_clk; return fsl_esdhc_initialize(bis, cfg); } +#endif #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT void mmc_adapter_card_type_ident(void) @@ -921,8 +1320,6 @@ __weak int esdhc_status_fixup(void *blob, const char *compat) return 1; } #endif - do_fixup_by_compat(blob, compat, "status", "okay", - sizeof("okay"), 1); return 0; } @@ -947,7 +1344,7 @@ void fdt_fixup_esdhc(void *blob, bd_t *bd) } #endif -#ifdef CONFIG_DM_MMC +#if CONFIG_IS_ENABLED(DM_MMC) #include __weak void init_clk_usdhc(u32 index) { @@ -956,21 +1353,33 @@ __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); +#ifdef CONFIG_DM_REGULATOR + struct udevice *vqmmc_dev; +#endif fdt_addr_t addr; unsigned int val; + struct mmc *mmc; int ret; - addr = devfdt_get_addr(dev); + addr = dev_read_addr(dev); if (addr == FDT_ADDR_T_NONE) return -EINVAL; priv->esdhc_regs = (struct fsl_esdhc *)addr; priv->dev = dev; + priv->mode = -1; + if (data) { + priv->flags = data->flags; + priv->caps = data->caps; + } - val = fdtdec_get_int(fdt, node, "bus-width", -1); + val = dev_read_u32_default(dev, "bus-width", -1); if (val == 8) priv->bus_width = 8; else if (val == 4) @@ -978,24 +1387,59 @@ static int fsl_esdhc_probe(struct udevice *dev) else priv->bus_width = 1; - if (fdt_get_property(fdt, node, "non-removable", NULL)) { + 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_nodev(offset_to_ofnode(node), "cd-gpios", - 0, &priv->cd_gpio, GPIOD_IS_IN); + gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, + GPIOD_IS_IN); #endif } priv->wp_enable = 1; #ifdef CONFIG_DM_GPIO - ret = gpio_request_by_name_nodev(offset_to_ofnode(node), "wp-gpios", 0, - &priv->wp_gpio, GPIOD_IS_IN); + ret = gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, + GPIOD_IS_IN); if (ret) priv->wp_enable = 0; #endif + + priv->vs18_enable = 0; + +#ifdef CONFIG_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); + /* * TODO: * Because lack of clk driver, if SDHC clk is not enabled, @@ -1024,34 +1468,94 @@ static int fsl_esdhc_probe(struct udevice *dev) return -EINVAL; } - ret = fsl_esdhc_init(priv); + ret = fsl_esdhc_init(priv, plat); if (ret) { dev_err(dev, "fsl_esdhc_init failure\n"); return ret; } - upriv->mmc = priv->mmc; - priv->mmc->dev = dev; + mmc = &plat->mmc; + mmc->cfg = &plat->cfg; + mmc->dev = dev; + upriv->mmc = mmc; - return 0; + return esdhc_init_common(priv, mmc); } +#if CONFIG_IS_ENABLED(DM_MMC) +static int fsl_esdhc_get_cd(struct udevice *dev) +{ + struct fsl_esdhc_priv *priv = dev_get_priv(dev); + + return true; + return esdhc_getcd_common(priv); +} + +static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + struct fsl_esdhc_plat *plat = dev_get_platdata(dev); + struct fsl_esdhc_priv *priv = dev_get_priv(dev); + + return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data); +} + +static int fsl_esdhc_set_ios(struct udevice *dev) +{ + struct fsl_esdhc_plat *plat = dev_get_platdata(dev); + struct fsl_esdhc_priv *priv = dev_get_priv(dev); + + return esdhc_set_ios_common(priv, &plat->mmc); +} + +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,imx6ul-usdhc", }, { .compatible = "fsl,imx6sx-usdhc", }, { .compatible = "fsl,imx6sl-usdhc", }, { .compatible = "fsl,imx6q-usdhc", }, - { .compatible = "fsl,imx7d-usdhc", }, + { .compatible = "fsl,imx7d-usdhc", .data = (ulong)&usdhc_imx7d_data,}, { .compatible = "fsl,imx7ulp-usdhc", }, { .compatible = "fsl,esdhc", }, { /* sentinel */ } }; +#if CONFIG_IS_ENABLED(BLK) +static int fsl_esdhc_bind(struct udevice *dev) +{ + struct fsl_esdhc_plat *plat = dev_get_platdata(dev); + + return mmc_bind(dev, &plat->mmc, &plat->cfg); +} +#endif + U_BOOT_DRIVER(fsl_esdhc) = { .name = "fsl-esdhc-mmc", .id = UCLASS_MMC, .of_match = fsl_esdhc_ids, + .ops = &fsl_esdhc_ops, +#if CONFIG_IS_ENABLED(BLK) + .bind = fsl_esdhc_bind, +#endif .probe = fsl_esdhc_probe, + .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat), .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv), }; #endif