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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-64b90f53c16sm32305340a12.1.2025.12.29.07.43.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 29 Dec 2025 07:43:18 -0800 (PST) Message-ID: <98e90787-885e-4e9f-a854-4a756e33ec9f@oss.qualcomm.com> Date: Mon, 29 Dec 2025 16:43:16 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: sdm845-tama: Keep labibb on, so kernel can disable it To: David Heidelberg , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "marijn.suijten@somainline.org" Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251202-tama-labibb-v1-1-f8f3fda53d1d@ixit.cz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjI5MDE0NCBTYWx0ZWRfX36Ww1bj2ArCH 6/ta3TaBXKoc/0aladDSaG3sRotljZr93hgsbpxTKTGMy6XhaoT6/GBPqMbF8an+V5+OmZ6CmFj 2Dx+gN1VwIw4DsD+hBvSmOQgPQSoP2djhY36MAgNfGbnrHHksaU4kHOXarKf7WPb4lu2XH/0VZZ agt91SUwAXXgQ8YNKCpQ7WSEt0jc8qCrFB3vp25Tz6J+6Fwk3sIbrGTiajuaeYPKBKE69l9GdzY 81Z+Nu1AovIrS1vTv9XDkTiW28iYGiIOkpGrMZorY94sJCFFKJ3y43vUGFDsx76Cm73wzhgA06v 0iGkDVx1VO8e0CpHVkUCXzXY5ctBl50bUJQR2BpEVG+bwK07zAI7rD+OOjhsApZA8NdbLSuelmY qyV9wnFjj2aYjw6nkr2taH5nilK9LrvxRmrRutrCtABjsUg0MVpCIbF9L47W+0n+e9q/lmc6GG2 qFoVGdHDR7MEV0fv5Xg== X-Proofpoint-ORIG-GUID: wpULbMyeysJkRGlxRRYC_0JLEWFZucLk X-Proofpoint-GUID: wpULbMyeysJkRGlxRRYC_0JLEWFZucLk X-Authority-Analysis: v=2.4 cv=CK4nnBrD c=1 sm=1 tr=0 ts=6952a198 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=YbIqboIzxJKirXsSkAcA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-29_05,2025-12-29_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 adultscore=0 suspectscore=0 priorityscore=1501 phishscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512290144 On 12/15/25 8:07 PM, David Heidelberg wrote: > 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 >>> >>> 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 >>> Signed-off-by: David Heidelberg >>> --- >> >> 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 > > 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! +Marijn could you take a look? Konrad