diff options
| author | Jean-Jacques Hiblot <jjhiblot@ti.com> | 2017-09-21 16:30:11 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-12 18:11:04 +0900 |
| commit | bc1e3272ff3437f7cfc5e8bf1d1f2767f6d78262 (patch) | |
| tree | c4a4aff53f61ae4733c23d643a0d85cf7ca3aa6b /include/mmc.h | |
| parent | 83dc42271f79202b746bc9614817b41a6911c88f (diff) | |
mmc: use the right voltage level for MMC DDR and HS200 modes
HS200 only supports 1.2v and 1.8v signal voltages. DDR52 supports 3.3v/1.8v
or 1.2v signal voltages.
Select the lowest voltage available when using those modes.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Diffstat (limited to 'include/mmc.h')
| -rw-r--r-- | include/mmc.h | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/include/mmc.h b/include/mmc.h index a9ebc880cb..c11f69859e 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -311,11 +311,15 @@ static inline bool mmc_is_tuning_cmd(uint cmdidx) enum mmc_voltage { MMC_SIGNAL_VOLTAGE_000 = 0, - MMC_SIGNAL_VOLTAGE_120, - MMC_SIGNAL_VOLTAGE_180, - MMC_SIGNAL_VOLTAGE_330 + MMC_SIGNAL_VOLTAGE_120 = 1, + MMC_SIGNAL_VOLTAGE_180 = 2, + MMC_SIGNAL_VOLTAGE_330 = 4, }; +#define MMC_ALL_SIGNAL_VOLTAGE (MMC_SIGNAL_VOLTAGE_120 |\ + MMC_SIGNAL_VOLTAGE_180 |\ + MMC_SIGNAL_VOLTAGE_330) + /* Maximum block size for MMC */ #define MMC_MAX_BLOCK_LEN 512 @@ -588,6 +592,8 @@ struct mmc { #endif #endif u8 *ext_csd; + u32 cardtype; /* cardtype read from the MMC */ + enum mmc_voltage current_voltage; enum bus_mode selected_mode; /* mode currently used */ enum bus_mode best_mode; /* best mode is the supported mode with the * highest bandwidth. It may not always be the @@ -647,6 +653,14 @@ int mmc_init(struct mmc *mmc); int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size); /** + * mmc_voltage_to_mv() - Convert a mmc_voltage in mV + * + * @voltage: The mmc_voltage to convert + * @return the value in mV if OK, -EINVAL on error (invalid mmc_voltage value) + */ +int mmc_voltage_to_mv(enum mmc_voltage voltage); + +/** * mmc_set_clock() - change the bus clock * @mmc: MMC struct * @clock: bus frequency in Hz |