Re: [PATCH v2 5/5] arm64: dts: qcom: sdm845-xiaomi-beryllium-tianma: Disable MDSS

David Heidelberg
2026-03-18T14:49:54Z

On 18/03/2026 15:47, Dmitry Baryshkov wrote:
> On Tue, Mar 17, 2026 at 11:12:35PM +0100, David Heidelberg via B4 Relay wrote:
>> From: Petr Hodina <petr.hodina@protonmail.com>
>>
>> Currently the panel driver for tianma is broken.
>> Disable MDSS to prevent DRM taking over the framebuffer.
>
> I'd still hope that somebody can get it to work. I'd start by using
> prepare_prev_first. Sumit reported the panel as working in 2020 and I
> have no doubts that it was the case. Another option migt be something
> related to the dispcc (see my [1]).

It's probable that prepare_prev_first will help, just sending the patchas part
of the original series.

I'm completely fine with taking other commits and leaving this one after more
investigation.

David

>
> [1] https://lore.kernel.org/linux-arm-msm/20260217-sdm845-hdk-v1-1-866f1965fef7@oss.qualcomm.com/
>