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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b97afca45c3sm231447766b.13.2026.03.16.02.30.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 02:30:31 -0700 (PDT) Message-ID: Date: Mon, 16 Mar 2026 10:30:28 +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 2/2] arm64: dts: qcom: sdm845-xiaomi-beryllium-tianma: Disable MDSS To: David Heidelberg , Dmitry Baryshkov Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org, Petr Hodina References: <20260311-beryllium-fb-v1-0-408a580d125e@ixit.cz> <20260311-beryllium-fb-v1-2-408a580d125e@ixit.cz> <137c19a3-136a-4e0e-b4ea-8cc474172d81@ixit.cz> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: tHtBRjr-pT4DaYKq3k0Vv-CbvcjtQTXk X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE2MDA3MyBTYWx0ZWRfX9mmP/wSLe4n+ cyr3h+rbORADa1rVXp+ah1i7/fhErBsNvBJNnmF8d52jXan5DSNMrzLeC2SoxLl12vMVgl/fM13 2xhBPJq+YyCCX21M62Shw7nJCvCrCCDTCIr1BZzbyL8/kw3i0FRxvg1rlsy+InShJz6LQw6wm8z XY7xweUJLHodh9o6jXs+7dRMAt01aP92Jyy83j1DZh2NZNRcSTFGWkFQ91htBhGe7N+1WyBQ2KI YWm7j6gWMsWj4e2dkKBKGWmpkrFDUEqd3ltF5Zgy8sWpYMBhlnTRJPjhloJrqucuK8xXq+sBOlZ pP2B775k/Ci5NhWHysOs54IEKjywYwFy0scSGSVuPLlQZvbE9qqRBOHy/JO4wxAy5VuyOFS3Hl7 LAnGt9xpkh2bnIeNv2KKroK1xZXot5qod2GCMBB0c2A+sMFkla9EwuPAKjE2bSFpPdf5+mj+hJL AQlkcVgo35N8f0Bp7NA== X-Proofpoint-ORIG-GUID: tHtBRjr-pT4DaYKq3k0Vv-CbvcjtQTXk X-Authority-Analysis: v=2.4 cv=BqqQAIX5 c=1 sm=1 tr=0 ts=69b7cdb9 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=sfOm8-O8AAAA:8 a=xNKo-it-qOgi_xrJINUA:9 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 a=TvTJqdcANYtsRzA46cdi:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-16_03,2026-03-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 clxscore=1015 spamscore=0 phishscore=0 bulkscore=0 malwarescore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603160073 On 3/13/26 2:09 PM, David Heidelberg wrote: > On 13/03/2026 13:38, Konrad Dybcio wrote: >> On 3/12/26 12:25 PM, David Heidelberg wrote: >>> On 12/03/2026 03:46, Dmitry Baryshkov wrote: >>>> On Wed, Mar 11, 2026 at 07:44:30PM +0100, David Heidelberg via B4 Relay wrote: >>>>> From: Petr Hodina >>>>> >>>>> Currently the panel driver for tianma is broken. >>>> >>>> How broken? Can it be fixed instead? >>> >>> No output to the panel. Definitely can be fixed, but current situation is that we don't have anyone who has available time or device to tackle the problem. >>> >>> I know it's not optimal, but on a way to achieve working mainline phones, my thinking is better to mark it as broken in mainline until someone fixes (assuming Fixes tag and backport) then just going black display (when we have at least framebuffer now). >> >> If you have a person with limited time, would simply copying this: >> >> 2b973ca48ff3 ("drm/panel: sony-td4353-jdi: Enable prepare_prev_first") > > Sorry, I don't follow. You meant introducing prepare_prev_first? Yes, just setting that single flag > I asked if it's possible to test, but looking at the rest of the driver, it'll need refactor anyway. Well I'dve assumed it worked at least at some point in time given it's in mainline? Konrad