Re: PROBLEM: mmc clock reduction error on NanoPi-R5S (rk3568)

Peter Taylor <[email protected]> Fri, 24 Jul 2026 17:23:04 +0100
Newsgroups org.kernel.vger.linux-mmc
Message-ID <[email protected]>
Hi

On 22/07/2026 03:54, Shawn Lin wrote:
 > May I ask which dts file you're using now?

I was using the u-boot 2026.07 release

On 22/07/2026 03:54, Shawn Lin wrote:
 > The RK3566/RK3568 SoCs only claim to support HS200.

This was really helpful, as there are some custom u-boot overrides 
adding HS400
items for the board in its device tree.

Removing these fixes the issue. I will be sending a patch upstream to u-boot
shortly

Peter