[PATCH v1 02/10] ufs: host: mediatek: Correct clock scaling with PM QoS flow

Peter Wang (王信友) peter.wang at mediatek.com
Mon Sep 22 22:58:31 PDT 2025


On Mon, 2025-09-22 at 12:21 -0700, Bart Van Assche wrote:
> 
> Hi Peter,
> 
> Thanks for the clarification, this is appreciated.
> 
> However, the following is not yet clear to me:
> (1) Why this change is necessary.
> 
Hi Bart,

Because if mediatek disable clock scaling (clk_scaling.is_enabled = 0) 
and keep in high gear, the performance will drop after resume.

> (2) Why this change has been implemented in the MediaTek driver
> instead
>      of the UFS core.
> 

Because I’m not sure if other platforms might have such special use
cases
—supporting clock scaling but then disabling it.

Thanks
Peter



> Thanks,
> 
> Bart.
> 



More information about the Linux-mediatek mailing list