diff options
| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-09-21 16:30:13 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-12 18:11:04 +0900 |
| commit | 9215ef5ed508b5de8b0c021a87b76f74561d1bad (patch) | |
| tree | d7ccc1d52073fc0a52d05ed903df8ca3fa0081ee /drivers | |
| parent | 9815e3ba807ddf395631be35629498e55af02fa0 (diff) | |
dm: mmc: Add a library function to parse generic dt binding
Add a new function to parse host controller dt node and
set mmc_config. This function can be used by mmc controller
drivers to set the generic mmc_config.
This function can be extended to set other UHS mode caps
once UHS mode support is added.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/mmc-uclass.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 7856e0ad08..e30cde7f68 100644 --- a/drivers/mmc/mmc-uclass.c +++ b/drivers/mmc/mmc-uclass.c @@ -120,6 +120,52 @@ int mmc_execute_tuning(struct mmc *mmc, uint opcode) return dm_mmc_execute_tuning(mmc->dev, opcode); } +int mmc_of_parse(const void *fdt, int node, struct mmc_config *cfg) +{ + int val; + + val = fdtdec_get_int(fdt, node, "bus-width", 1); + + switch (val) { + case 0x8: + cfg->host_caps |= MMC_MODE_8BIT; + /* fall through */ + case 0x4: + cfg->host_caps |= MMC_MODE_4BIT; + /* fall through */ + case 0x1: + cfg->host_caps |= MMC_MODE_1BIT; + break; + default: + printf("error: %s invalid bus-width property %d\n", + fdt_get_name(fdt, node, NULL), val); + return -ENOENT; + } + + cfg->f_max = fdtdec_get_int(fdt, node, "max-frequency", 52000000); + + if (fdtdec_get_bool(fdt, node, "cap-sd-highspeed")) + cfg->host_caps |= MMC_CAP(SD_HS); + if (fdtdec_get_bool(fdt, node, "cap-mmc-highspeed")) + cfg->host_caps |= MMC_CAP(MMC_HS); + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr12")) + cfg->host_caps |= MMC_CAP(UHS_SDR12); + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr25")) + cfg->host_caps |= MMC_CAP(UHS_SDR25); + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr50")) + cfg->host_caps |= MMC_CAP(UHS_SDR50); + if (fdtdec_get_bool(fdt, node, "sd-uhs-sdr104")) + cfg->host_caps |= MMC_CAP(UHS_SDR104); + if (fdtdec_get_bool(fdt, node, "sd-uhs-ddr50")) + cfg->host_caps |= MMC_CAP(UHS_DDR50); + if (fdtdec_get_bool(fdt, node, "mmc-ddr-1_8v")) + cfg->host_caps |= MMC_CAP(MMC_DDR_52); + if (fdtdec_get_bool(fdt, node, "mmc-hs200-1_8v")) + cfg->host_caps |= MMC_CAP(MMC_HS_200); + + return 0; +} + struct mmc *mmc_get_mmc_dev(struct udevice *dev) { struct mmc_uclass_priv *upriv; |