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

9 Nov 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@canonical.com
Reviewed-by: Jaehoon Chung jh80.chung@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






    