Re: [PATCH 3/4] arm64: dts: qcom: sdm845: Add missing MDSS reset
From: Dmitry Baryshkov <hidden>
Date: 2026-02-18 15:59:25
Also in:
linux-arm-msm, linux-clk, lkml
On Wed, Feb 18, 2026 at 03:28:01PM +0100, Konrad Dybcio wrote:
On 18-Feb-26 12:58, Dmitry Baryshkov wrote:quoted
On Wed, Feb 18, 2026 at 12:24:26PM +0100, Konrad Dybcio wrote:quoted
On 2/18/26 12:18 PM, David Heidelberg wrote:quoted
On 18/02/2026 11:30, Konrad Dybcio wrote:quoted
On 2/17/26 10:20 PM, Dmitry Baryshkov wrote:quoted
From: David Heidelberg <david@ixit.cz> 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_2000Thanks, 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@ixit.cz/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 placeI 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.Back when I replied, David had a patch that removed the current RSCC reset definition in dt-bindings (at index 0) and re-used that index for CORE, putting RSCC at index 1. Perhaps it's better to link to specific commits when making comments, note to self :P
Yes, I saw the commit having two resets. Anyway, as we saw, it doesn't work. -- With best wishes Dmitry