linux-kernel - Re: [PATCH] arm64: dts: qcom: sdm845-tama: Keep labibb on, so kernel can disable it

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Message-ID: <e3590c98-785f-4774-bb57-04c65cf12d21@ixit.cz>
Date: Mon, 15 Dec 2025 20:07:09 +0100
From: David Heidelberg <david@...t.cz>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sdm845-tama: Keep labibb on, so kernel
 can disable it

On 02/12/2025 13:55, Konrad Dybcio wrote:
> On 12/2/25 12:31 PM, David Heidelberg via B4 Relay wrote:
>> From: David Heidelberg <david@...t.cz>
>>
>> In case if they were enabled by the bootloader as part of some
>> reference/common routine and left hanging. Linux will switch them off if
>> they're never used.
>>
>> Discussion about it can be found here:
>>    https://lore.kernel.org/all/20251130-oneplus-labibb-v1-1-bb3653e43120@ixit.cz/
>>
>> Fixes: 5dcc6587fde2 ("arm64: dts: qcom: sdm845-tama: Add display nodes")
>> Suggested-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
>> Signed-off-by: David Heidelberg <david@...t.cz>
>> ---
> 
> Perhaps "keeping it on" is a little bit unfortunate in that the wording
> collides with keeping the regulator's output enabled, but anyway
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

So, friend fixed tama-akatsuki against -next tree and having labibb 
nodes there crashes the kernel, so it seems disabling labibb had some 
reason.

So, please do not merge until figured out!

David

> 
> Konrad

-- 
David Heidelberg