On 09/21/2017 11:30 PM, Jean-Jacques Hiblot wrote:
From: Kishon Vijay Abraham I kishon@ti.com
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
drivers/mmc/mmc-uclass.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ include/mmc.h | 1 + 2 files changed, 47 insertions(+)
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c index 7856e0a..e30cde7 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);
I guess it can be set to 1-bit by default and just display message about invalid bus-width property.
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);
Don't need to check about 1.2v?
- return 0;
+}
struct mmc *mmc_get_mmc_dev(struct udevice *dev) { struct mmc_uclass_priv *upriv; diff --git a/include/mmc.h b/include/mmc.h index 79be6b4..6230a32 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -651,6 +651,7 @@ int mmc_unbind(struct udevice *dev); int mmc_initialize(bd_t *bis); int mmc_init(struct mmc *mmc); int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error); +int mmc_of_parse(const void *fdt, int node, struct mmc_config *cfg); int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size);
/**