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mmc: add set_timing entry for timing selection 

Some controller should do some configuration according to the selected
timing.

Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This commit is contained in:
Ziyuan Xu 2017-05-15 14:06:56 +08:00 committed by Kever Yang
parent 227f658e55
commit 81db2d363c
2 changed files with 56 additions and 0 deletions
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7
drivers/mmc/mmc.c
View File

@ -318,6 +318,12 @@ ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
return blkcnt;
}
static void mmc_set_timing(struct mmc *mmc, uint timing)
{
mmc->timing = timing;
mmc_set_ios(mmc);
}
static int mmc_go_idle(struct mmc *mmc)
{
struct mmc_cmd cmd;
@ -1741,6 +1747,7 @@ int mmc_start_init(struct mmc *mmc)
mmc->ddr_mode = 0;
mmc_set_bus_width(mmc, 1);
mmc_set_clock(mmc, 1);
mmc_set_timing(mmc, MMC_TIMING_LEGACY);
/* Reset the Card */
err = mmc_go_idle(mmc);

49
include/mmc.h
View File

@ -438,6 +438,21 @@ struct mmc {
uint has_init;
int high_capacity;
uint bus_width;
uint timing;
#define MMC_TIMING_LEGACY 0
#define MMC_TIMING_MMC_HS 1
#define MMC_TIMING_SD_HS 2
#define MMC_TIMING_UHS_SDR12 3
#define MMC_TIMING_UHS_SDR25 4
#define MMC_TIMING_UHS_SDR50 5
#define MMC_TIMING_UHS_SDR104 6
#define MMC_TIMING_UHS_DDR50 7
#define MMC_TIMING_MMC_DDR52 8
#define MMC_TIMING_MMC_HS200 9
#define MMC_TIMING_MMC_HS400 10
#define MMC_TIMING_MMC_HS400ES 11
uint clock;
uint card_caps;
uint ocr;
@ -497,6 +512,40 @@ enum mmc_hwpart_conf_mode {
MMC_HWPART_CONF_COMPLETE,
};
static inline bool mmc_card_hs(struct mmc *mmc)
{
return (mmc->timing == MMC_TIMING_MMC_HS) ||
(mmc->timing == MMC_TIMING_SD_HS);
}
static inline bool mmc_card_ddr(struct mmc *mmc)
{
return (mmc->timing == MMC_TIMING_UHS_DDR50) ||
(mmc->timing == MMC_TIMING_MMC_DDR52) ||
(mmc->timing == MMC_TIMING_MMC_HS400) ||
(mmc->timing == MMC_TIMING_MMC_HS400ES);
}
static inline bool mmc_card_hs200(struct mmc *mmc)
{
return mmc->timing == MMC_TIMING_MMC_HS200;
}
static inline bool mmc_card_ddr52(struct mmc *mmc)
{
return mmc->timing == MMC_TIMING_MMC_DDR52;
}
static inline bool mmc_card_hs400(struct mmc *mmc)
{
return mmc->timing == MMC_TIMING_MMC_HS400;
}
static inline bool mmc_card_hs400es(struct mmc *mmc)
{
return mmc->timing == MMC_TIMING_MMC_HS400ES;
}
struct mmc *mmc_create(const struct mmc_config *cfg, void *priv);
/**