Re: [PATCH 3/4] arm64: dts: qcom: sdm845: Add missing MDSS reset

[Dmitry Baryshkov]

On Wed, Feb 18, 2026 at 12:24:26PM +0100, Konrad Dybcio wrote:
> On 2/18/26 12:18 PM, David Heidelberg wrote:
> > On 18/02/2026 11:30, Konrad Dybcio wrote:
> >> On 2/17/26 10:20 PM, Dmitry Baryshkov wrote:
> >>> From: David Heidelberg <david@xxxxxxx>
> >>>
> >>> If the OS does not support recovering the state left by the
> >>> bootloader it needs a way to reset display hardware, so that it can
> >>> start from a clean state. Add a reference to the relevant reset.
> >>
> >> This is not the relevant reset
> >>
> >> You want MDSS_CORE_BCR @ 0xaf0_2000
> > 
> > Thanks, I prepared the fixes [1].
> > 
> > I'll try to test it if it's not breaking anything for us and send as v2 of [2].
> > 
> > David
> > 
> > [1] https://codeberg.org/sdm845/linux/commits/branch/b4/mdss-reset
> > [2] https://patchwork.kernel.org/project/linux-arm-msm/patch/20260112-mdss-reset-v1-1-af7c572204d3@xxxxxxx/
> 
> Please don't alter the contents of dt-bindings, it really doesn't matter
> if on sdm845 it's reset0 or reset1, that's why we define them in the first
> place 

I dpn't think that will pass. Current reset is defined as RSCC, we can't
change that to CORE behind the scene. I'd prefer David's approach.

> 
> Konrad

-- 
With best wishes
Dmitry