On 09/21/2017 11:30 PM, Jean-Jacques Hiblot wrote:
> From: Kishon Vijay Abraham I <kis...@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 <kis...@ti.com>
> Signed-off-by: Jean-Jacques Hiblot <jjhib...@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);
>
> /**
>
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