From 3697e5992f89c923aca17d7d9174739da28cb3cd Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 1 Sep 2016 11:13:38 +0800 Subject: mmc: sd: extracting erase related information from sd status Add function to read SD_STATUS information. According to the information, get erase_timeout/erase_size/erase_offset. Add a structure sd_ssr to include the erase related information. Signed-off-by: Peng Fan Cc: Jaehoon Chung Cc: Simon Glass Cc: Bin Meng Cc: Stefan Wahren Cc: Clemens Gruber Cc: Kever Yang Cc: Eric Nelson Cc: Stephen Warren --- include/mmc.h | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'include') diff --git a/include/mmc.h b/include/mmc.h index aa6d5d1d4ff..e815eb3736c 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -11,6 +11,7 @@ #define _MMC_H_ #include +#include #include #include @@ -102,6 +103,7 @@ #define SD_CMD_SWITCH_UHS18V 11 #define SD_CMD_APP_SET_BUS_WIDTH 6 +#define SD_CMD_APP_SD_STATUS 13 #define SD_CMD_ERASE_WR_BLK_START 32 #define SD_CMD_ERASE_WR_BLK_END 33 #define SD_CMD_APP_SEND_OP_COND 41 @@ -392,6 +394,12 @@ struct mmc_config { unsigned char part_type; }; +struct sd_ssr { + unsigned int au; /* In sectors */ + unsigned int erase_timeout; /* In milliseconds */ + unsigned int erase_offset; /* In milliseconds */ +}; + /* * With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device * with mmc_get_mmc_dev(). @@ -426,6 +434,7 @@ struct mmc { uint write_bl_len; uint erase_grp_size; /* in 512-byte sectors */ uint hc_wp_grp_size; /* in 512-byte sectors */ + struct sd_ssr ssr; /* SD status register */ u64 capacity; u64 capacity_user; u64 capacity_boot; -- cgit v1.3.1 From 6dffdbc3a5911e768be21850a612bfb4871a23ef Mon Sep 17 00:00:00 2001 From: Wenyou Yang Date: Sun, 18 Sep 2016 09:01:22 +0800 Subject: mmc: sdhci: Add the programmable clock mode support Add the programmable clock mode for the clock generator. Signed-off-by: Wenyou Yang --- drivers/mmc/sdhci.c | 50 ++++++++++++++++++++++++++++++++++++++++---------- include/sdhci.h | 2 ++ 2 files changed, 42 insertions(+), 10 deletions(-) (limited to 'include') diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 504f2d29acc..b2bf5a03fa8 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -294,7 +294,7 @@ static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd, static int sdhci_set_clock(struct mmc *mmc, unsigned int clock) { struct sdhci_host *host = mmc->priv; - unsigned int div, clk, timeout, reg; + unsigned int div, clk = 0, timeout, reg; /* Wait max 20 ms */ timeout = 200; @@ -318,14 +318,36 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock) return 0; if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) { - /* Version 3.00 divisors must be a multiple of 2. */ - if (mmc->cfg->f_max <= clock) - div = 1; - else { - for (div = 2; div < SDHCI_MAX_DIV_SPEC_300; div += 2) { - if ((mmc->cfg->f_max / div) <= clock) + /* + * Check if the Host Controller supports Programmable Clock + * Mode. + */ + if (host->clk_mul) { + for (div = 1; div <= 1024; div++) { + if ((mmc->cfg->f_max * host->clk_mul / div) + <= clock) break; } + + /* + * Set Programmable Clock Mode in the Clock + * Control register. + */ + clk = SDHCI_PROG_CLOCK_MODE; + div--; + } else { + /* Version 3.00 divisors must be a multiple of 2. */ + if (mmc->cfg->f_max <= clock) { + div = 1; + } else { + for (div = 2; + div < SDHCI_MAX_DIV_SPEC_300; + div += 2) { + if ((mmc->cfg->f_max / div) <= clock) + break; + } + } + div >>= 1; } } else { /* Version 2.00 divisors must be a power of 2. */ @@ -333,13 +355,13 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock) if ((mmc->cfg->f_max / div) <= clock) break; } + div >>= 1; } - div >>= 1; if (host->set_clock) host->set_clock(host->index, div); - clk = (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; + clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) << SDHCI_DIVIDER_HI_SHIFT; clk |= SDHCI_CLOCK_INT_EN; @@ -513,7 +535,7 @@ static const struct mmc_ops sdhci_ops = { int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, u32 max_clk, u32 min_clk) { - u32 caps; + u32 caps, caps_1; caps = sdhci_readl(host, SDHCI_CAPABILITIES); @@ -577,6 +599,14 @@ int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host, cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT; + /* + * In case of Host Controller v3.00, find out whether clock + * multiplier is supported. + */ + caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1); + host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >> + SDHCI_CLOCK_MUL_SHIFT; + return 0; } diff --git a/include/sdhci.h b/include/sdhci.h index 6844c73bdc5..144570f2be9 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -97,6 +97,7 @@ #define SDHCI_DIV_MASK 0xFF #define SDHCI_DIV_MASK_LEN 8 #define SDHCI_DIV_HI_MASK 0x300 +#define SDHCI_PROG_CLOCK_MODE 0x0020 #define SDHCI_CLOCK_CARD_EN 0x0004 #define SDHCI_CLOCK_INT_STABLE 0x0002 #define SDHCI_CLOCK_INT_EN 0x0001 @@ -242,6 +243,7 @@ struct sdhci_host { unsigned int quirks; unsigned int host_caps; unsigned int version; + unsigned int clk_mul; /* Clock Multiplier value */ unsigned int clock; struct mmc *mmc; const struct sdhci_ops *ops; -- cgit v1.3.1