[PATCH 1/1] doc: mmc rescan speed mode

Jaehoon Chung jh80.chung at samsung.com
Tue Nov 9 05:25:54 CET 2021


On 11/6/21 12:39 AM, Heinrich Schuchardt wrote:
> Provide human readable descriptions of the speed nodes instead of the name
> of constants from the code.
> 
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>

Reviewed-by: Jaehoon Chung <jh80.chung at samsung.com>

Best Regards,
Jaehoon Chung

> ---
>  doc/usage/mmc.rst | 36 ++++++++++++++++++++----------------
>  1 file changed, 20 insertions(+), 16 deletions(-)
> 
> diff --git a/doc/usage/mmc.rst b/doc/usage/mmc.rst
> index d15b151884..02b5d7b1c7 100644
> --- a/doc/usage/mmc.rst
> +++ b/doc/usage/mmc.rst
> @@ -51,22 +51,26 @@ The 'mmc rescan' command scans the available MMC device.
>  
>     mode
>         speed mode to set.
> -       CONFIG_MMC_SPEED_MODE_SET should be enabled. The required speed mode is
> -       passed as the index from the following list.
> -
> -       0   - MMC_LEGACY
> -       1   - MMC_HS
> -       2   - SD_HS
> -       3   - MMC_HS_52
> -       4   - MMC_DDR_52
> -       5   - UHS_SDR12
> -       6   - UHS_SDR25
> -       7   - UHS_SDR50
> -       8   - UHS_DDR50
> -       9   - UHS_SDR104
> -       10  - MMC_HS_200
> -       11  - MMC_HS_400
> -       12  - MMC_HS_400_ES
> +       CONFIG_MMC_SPEED_MODE_SET should be enabled. The requested speed mode is
> +       passed as a decimal number according to the following table:
> +
> +       ========== ==========================
> +       Speed mode Description
> +       ========== ==========================
> +           0      MMC legacy
> +           1      MMC High Speed (26MHz)
> +           2      SD High Speed (50MHz)
> +           3      MMC High Speed (52MHz)
> +           4      MMC DDR52 (52MHz)
> +           5      UHS SDR12 (25MHz)
> +           6      UHS SDR25 (50MHz)
> +           7      UHS SDR50 (100MHz)
> +           8      UHS DDR50 (50MHz)
> +           9      UHS SDR104 (208MHz)
> +          10      HS200 (200MHz)
> +          11      HS400 (200MHz)
> +          12      HS400ES (200MHz)
> +       ========== ==========================
>  
>         A speed mode can be set only if it has already been enabled in the device tree
>  
> 



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