diff options
| -rw-r--r-- | drivers/mmc/renesas-sdhi.c | 165 | ||||
| -rw-r--r-- | drivers/mmc/tmio-common.h | 4 |
2 files changed, 166 insertions, 3 deletions
diff --git a/drivers/mmc/renesas-sdhi.c b/drivers/mmc/renesas-sdhi.c index 698ecf6..7c53aa2 100644 --- a/drivers/mmc/renesas-sdhi.c +++ b/drivers/mmc/renesas-sdhi.c @@ -38,9 +38,111 @@ #define RENESAS_SDHI_SCC_TMPPORT2 0x81c #define RENESAS_SDHI_SCC_TMPPORT2_HS400EN BIT(31) #define RENESAS_SDHI_SCC_TMPPORT2_HS400OSEL BIT(4) +#define RENESAS_SDHI_SCC_TMPPORT3 0x828 +#define RENESAS_SDHI_SCC_TMPPORT3_OFFSET_0 3 +#define RENESAS_SDHI_SCC_TMPPORT3_OFFSET_1 2 +#define RENESAS_SDHI_SCC_TMPPORT3_OFFSET_2 1 +#define RENESAS_SDHI_SCC_TMPPORT3_OFFSET_3 0 +#define RENESAS_SDHI_SCC_TMPPORT3_OFFSET_MASK 0x3 +#define RENESAS_SDHI_SCC_TMPPORT4 0x82c +#define RENESAS_SDHI_SCC_TMPPORT4_DLL_ACC_START BIT(0) +#define RENESAS_SDHI_SCC_TMPPORT5 0x830 +#define RENESAS_SDHI_SCC_TMPPORT5_DLL_RW_SEL_R BIT(8) +#define RENESAS_SDHI_SCC_TMPPORT5_DLL_RW_SEL_W (0 << 8) +#define RENESAS_SDHI_SCC_TMPPORT5_DLL_ADR_MASK 0x3F +#define RENESAS_SDHI_SCC_TMPPORT6 0x834 +#define RENESAS_SDHI_SCC_TMPPORT7 0x838 +#define RENESAS_SDHI_SCC_TMPPORT_DISABLE_WP_CODE 0xa5000000 +#define RENESAS_SDHI_SCC_TMPPORT_CALIB_CODE_MASK 0x1f +#define RENESAS_SDHI_SCC_TMPPORT_MANUAL_MODE BIT(7) #define RENESAS_SDHI_MAX_TAP 3 +static u32 sd_scc_tmpport_read32(struct tmio_sd_priv *priv, u32 addr) +{ + /* read mode */ + tmio_sd_writel(priv, RENESAS_SDHI_SCC_TMPPORT5_DLL_RW_SEL_R | + (RENESAS_SDHI_SCC_TMPPORT5_DLL_ADR_MASK & addr), + RENESAS_SDHI_SCC_TMPPORT5); + + /* access start and stop */ + tmio_sd_writel(priv, RENESAS_SDHI_SCC_TMPPORT4_DLL_ACC_START, + RENESAS_SDHI_SCC_TMPPORT4); + tmio_sd_writel(priv, 0, RENESAS_SDHI_SCC_TMPPORT4); + + return tmio_sd_readl(priv, RENESAS_SDHI_SCC_TMPPORT7); +} + +static void sd_scc_tmpport_write32(struct tmio_sd_priv *priv, u32 addr, u32 val) +{ + /* write mode */ + tmio_sd_writel(priv, RENESAS_SDHI_SCC_TMPPORT5_DLL_RW_SEL_W | + (RENESAS_SDHI_SCC_TMPPORT5_DLL_ADR_MASK & addr), + RENESAS_SDHI_SCC_TMPPORT5); + tmio_sd_writel(priv, val, RENESAS_SDHI_SCC_TMPPORT6); + + /* access start and stop */ + tmio_sd_writel(priv, RENESAS_SDHI_SCC_TMPPORT4_DLL_ACC_START, + RENESAS_SDHI_SCC_TMPPORT4); + tmio_sd_writel(priv, 0, RENESAS_SDHI_SCC_TMPPORT4); +} + +static void renesas_sdhi_adjust_hs400_mode_enable(struct tmio_sd_priv *priv) +{ + u32 calib_code; + + if (!priv->adjust_hs400_enable) + return; + + if (!priv->needs_adjust_hs400) + return; + + /* + * Enabled Manual adjust HS400 mode + * + * 1) Disabled Write Protect + * W(addr=0x00, WP_DISABLE_CODE) + * 2) Read Calibration code and adjust + * R(addr=0x26) - adjust value + * 3) Enabled Manual Calibration + * W(addr=0x22, manual mode | Calibration code) + * 4) Set Offset value to TMPPORT3 Reg + */ + sd_scc_tmpport_write32(priv, 0x00, + RENESAS_SDHI_SCC_TMPPORT_DISABLE_WP_CODE); + calib_code = sd_scc_tmpport_read32(priv, 0x26); + calib_code &= RENESAS_SDHI_SCC_TMPPORT_CALIB_CODE_MASK; + if (calib_code > priv->adjust_hs400_calibrate) + calib_code -= priv->adjust_hs400_calibrate; + else + calib_code = 0; + sd_scc_tmpport_write32(priv, 0x22, + RENESAS_SDHI_SCC_TMPPORT_MANUAL_MODE | + calib_code); + tmio_sd_writel(priv, priv->adjust_hs400_offset, + RENESAS_SDHI_SCC_TMPPORT3); + + /* Clear flag */ + priv->needs_adjust_hs400 = false; +} + +static void renesas_sdhi_adjust_hs400_mode_disable(struct tmio_sd_priv *priv) +{ + + /* Disabled Manual adjust HS400 mode + * + * 1) Disabled Write Protect + * W(addr=0x00, WP_DISABLE_CODE) + * 2) Disabled Manual Calibration + * W(addr=0x22, 0) + * 3) Clear offset value to TMPPORT3 Reg + */ + sd_scc_tmpport_write32(priv, 0x00, + RENESAS_SDHI_SCC_TMPPORT_DISABLE_WP_CODE); + sd_scc_tmpport_write32(priv, 0x22, 0); + tmio_sd_writel(priv, 0, RENESAS_SDHI_SCC_TMPPORT3); +} + static unsigned int renesas_sdhi_init_tuning(struct tmio_sd_priv *priv) { u32 reg; @@ -96,6 +198,9 @@ static void renesas_sdhi_reset_tuning(struct tmio_sd_priv *priv) RENESAS_SDHI_SCC_TMPPORT2_HS400OSEL); tmio_sd_writel(priv, reg, RENESAS_SDHI_SCC_TMPPORT2); + /* Disable HS400 mode adjustment */ + renesas_sdhi_adjust_hs400_mode_disable(priv); + reg = tmio_sd_readl(priv, TMIO_SD_CLKCTL); reg |= TMIO_SD_CLKCTL_SCLKEN; tmio_sd_writel(priv, reg, TMIO_SD_CLKCTL); @@ -137,6 +242,10 @@ static int renesas_sdhi_hs400(struct udevice *dev) tmio_sd_writel(priv, reg, RENESAS_SDHI_SCC_TMPPORT2); + /* Disable HS400 mode adjustment */ + if (!hs400) + renesas_sdhi_adjust_hs400_mode_disable(priv); + tmio_sd_writel(priv, (0x8 << RENESAS_SDHI_SCC_DTCNTL_TAPNUM_SHIFT) | RENESAS_SDHI_SCC_DTCNTL_TAPEN, RENESAS_SDHI_SCC_DTCNTL); @@ -159,6 +268,10 @@ static int renesas_sdhi_hs400(struct udevice *dev) reg |= RENESAS_SDHI_SCC_RVSCNTL_RVSEN; tmio_sd_writel(priv, reg, RENESAS_SDHI_SCC_RVSCNTL); + /* Execute adjust hs400 offset after setting to HS400 mode */ + if (hs400) + priv->needs_adjust_hs400 = true; + return 0; } @@ -188,6 +301,8 @@ static int renesas_sdhi_select_tuning(struct tmio_sd_priv *priv, bool select = false; u32 reg; + priv->needs_adjust_hs400 = false; + /* Clear SCC_RVSREQ */ tmio_sd_writel(priv, 0, RENESAS_SDHI_SCC_RVSREQ); @@ -405,8 +520,29 @@ static int renesas_sdhi_wait_dat0(struct udevice *dev, int state, int timeout) } #endif +static int renesas_sdhi_send_cmd(struct udevice *dev, struct mmc_cmd *cmd, + struct mmc_data *data) +{ + int ret; + + ret = tmio_sd_send_cmd(dev, cmd, data); + if (ret) + return ret; + +#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \ + CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || \ + CONFIG_IS_ENABLED(MMC_HS400_SUPPORT) + struct tmio_sd_priv *priv = dev_get_priv(dev); + + if (cmd->cmdidx == MMC_CMD_SEND_STATUS) + renesas_sdhi_adjust_hs400_mode_enable(priv); +#endif + + return 0; +} + static const struct dm_mmc_ops renesas_sdhi_ops = { - .send_cmd = tmio_sd_send_cmd, + .send_cmd = renesas_sdhi_send_cmd, .set_ios = renesas_sdhi_set_ios, .get_cd = tmio_sd_get_cd, #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) || \ @@ -451,14 +587,37 @@ static void renesas_sdhi_filter_caps(struct udevice *dev) if (!(priv->caps & TMIO_SD_CAP_RCAR_GEN3)) return; - /* HS400 is not supported on H3 ES1.x and M3W ES1.0,ES1.1 */ + /* HS400 is not supported on H3 ES1.x and M3W ES1.0,ES1.1,ES1.2 */ if (((rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A7795) && (rmobile_get_cpu_rev_integer() <= 1)) || ((rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A7796) && (rmobile_get_cpu_rev_integer() == 1) && - (rmobile_get_cpu_rev_fraction() <= 1))) + (rmobile_get_cpu_rev_fraction() <= 2))) plat->cfg.host_caps &= ~MMC_MODE_HS400; + /* M3W ES1.x for x>2 can use HS400 with manual adjustment */ + if ((rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A7796) && + (rmobile_get_cpu_rev_integer() == 1) && + (rmobile_get_cpu_rev_fraction() > 2)) { + priv->adjust_hs400_enable = true; + priv->adjust_hs400_offset = 0; + priv->adjust_hs400_calibrate = 0x9; + } + + /* M3N can use HS400 with manual adjustment */ + if (rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A77965) { + priv->adjust_hs400_enable = true; + priv->adjust_hs400_offset = 0; + priv->adjust_hs400_calibrate = 0x0; + } + + /* E3 can use HS400 with manual adjustment */ + if (rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A77990) { + priv->adjust_hs400_enable = true; + priv->adjust_hs400_offset = 0; + priv->adjust_hs400_calibrate = 0x2; + } + /* H3 ES2.0 uses 4 tuning taps */ if ((rmobile_get_cpu_type() == RMOBILE_CPU_TYPE_R8A7795) && (rmobile_get_cpu_rev_integer() == 2)) diff --git a/drivers/mmc/tmio-common.h b/drivers/mmc/tmio-common.h index 58ce3d6..51607de 100644 --- a/drivers/mmc/tmio-common.h +++ b/drivers/mmc/tmio-common.h @@ -139,6 +139,10 @@ struct tmio_sd_priv { #if CONFIG_IS_ENABLED(RENESAS_SDHI) u8 tap_set; u8 nrtaps; + bool needs_adjust_hs400; + bool adjust_hs400_enable; + u8 adjust_hs400_offset; + u8 adjust_hs400_calibrate; #endif ulong (*clk_get_rate)(struct tmio_sd_priv *); }; |