Re: [PATCH] arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved

[Konrad Dybcio]

On 9.02.2023 12:03, Bryan O'Donoghue wrote:
> On 09/02/2023 09:05, Amit Pundir wrote:
>> Hi, So what is the verdict on this patch?
>>
>> I submitted this fix to make sure UFS don't map and crash on it, which
>> I have seen happening occassionaly on db845c and Caleb reported
>> similar issues on his sdm845 device iirc. I should have probably put
>> that in my commit message as well.
>>
>> Regards,
>> Amit Pundir
> 
> So the memory _is_ being used by ... continuous splash on an Android image, i.e. your Android ? limited to Android - image continues on with the splash but other blocks erroneously reuse the memory then, UFS as an example ?
If the bootloader splash is enabled then this memory is used until the
DPU driver instructs MDP5 pipes to suck data from a newly assigned address,
so there's a short window where it is.

Konrad
> 
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> bod