[PATCH 0/3] rockchip: sdhci: Add HS400 Enhanced Strobe support

[Alper Nebi Yasak]

On 01/11/2021 12:19, Jaehoon Chung wrote:
> On 11/1/21 6:07 PM, Alper Nebi Yasak wrote:
>> I'm trying this with "load mmc 0:1 0xd0000000 /bigfile $size" and getting
>> the following speeds; and with "mmc info" the following differences:
>>
>>     gru-kevin mmc0      | w/o this series           | w/ this series
>>     --------------------+---------------------------+-------------------
>>     Bus Speed           | 52000000                  | 200000000
>>     Mode                | MMC High Speed (52MHz)    | HS400ES (200 MHz)
>>     8MiB Load Speed     | ~9.5 MiB/s                | ~51.5 MiB/s
>>     256MiB Load Speed   | ~177.8 MiB/s              | ~114.5 MiB/s
> 
> I wonder why HS400ES is lower than High Speed mode in 256MiB Load Speed.

I messed up the table, noticed it shortly after sending the series and
sent a correction same time as your email. The actual values are:

>     8MiB Load Speed     | ~9.5 MiB/s                | ~177.8 MiB/s
>     256MiB Load Speed   | ~51.5 MiB/s               | ~114.5 MiB/s

Sorry for the noise.