[PATCH 0/3] rockchip: Add support for onboard eMMC on Radxa E20C

[Jonas Karlman]

Hi Chukun,

On 2025-03-06 10:00, Chukun Pan wrote:
> Hi,
> 
>> Driver changes to use different delay and tap num is needed to be able
>> to support HS400 modes, something for a future series. With this HS200
>> mode should work:
> 
> I have tried HS200 mode on other rk3528 boards and it works fine,
> so can we enable HS200 mode for Radxa E20C first?

The host controller already report the HS200 mode, and as shown in cover
letter HS200 mode is being enabled/used with this series.

However, the driver must use different tap/delay num for HS400(ES) modes.
At top of [1] there is a commit that changes to use same tap/delay num
as vendor kernel and what I have tested worked in U-Boot. That commit
needs to be re-worked before it is ready. Also see [2] for pending work
before I plan to complete before moving on to the dwcmshc driver.

[1] https://github.com/Kwiboo/linux-rockchip/commits/next-20250227-rk3528-rk3506/
[2] https://github.com/Kwiboo/linux-rockchip/commits/next-20250305-rk3528/

Regards,
Jonas

> 
> Thanks,
> Chukun
>