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Tue, 30 Jun 2026 03:29:45 -0700 (PDT) X-Received: by 2002:a05:622a:44a:b0:51a:8c9b:64a5 with SMTP id d75a77b69052e-51c109079a0mr27106041cf.9.1782815384782; Tue, 30 Jun 2026 03:29:44 -0700 (PDT) Received: from [192.168.120.170] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c1288f4d90esm100637466b.45.2026.06.30.03.29.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 30 Jun 2026 03:29:44 -0700 (PDT) Message-ID: Date: Tue, 30 Jun 2026 12:29:42 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: qcom: sc8280xp-huawei-gaokun3: Add dsi panel DT node To: Pengyu Luo 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 References: <20260630042229.277799-1-mitltlatltl@gmail.com> <35f13ab2-cdba-426f-bf4b-36f53ce1d4bb@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: 507ggQWYiN8M-DSvOOTDOLNVwemeqCwu X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjMwMDA5NSBTYWx0ZWRfX4icHO8D5zcUl allg5H7Cp1L3ZrWVuM9QqKIvpnYwNrZwojzPCdJJ4J7KCi9dAUEvqNA1prH8dmbXbIjwLfqkGBb G6apbUtVfblmFwfRVbBhYZSUzAXpuuCyeB1vi8gOtivvFSJobyL1/mmmfyIDWof+GVXZyDXmLUF FOH5M+9rOD5PvTpRPaDxPHiPtUySJYskG5coBFcDqFANTwgMfgoeMyxrc7KejQVmu6mVWsIXDjC xrPUg9ju4+Gnf3Yb1Xyl5X/kfB3eHpe/QjIJ4zeHENyzsj7R35ia+BwwEqdD83PRqQsKq68lI0c sJeK7xiFLjtGmKws1603DFgtQx3kBWTQsfLG4De5C788DU14Tgsloo72r0nnCJsEFVN5veQEgSQ TfEEmf/9EzlpcyedOnGKxsLMqoihKBzPopWfVU044Qv9Bdj4RQoBZ9+MCSW/J+hYmRmAc9nY7YD 0hyWCivgpahY5qu0Urw== X-Proofpoint-GUID: 507ggQWYiN8M-DSvOOTDOLNVwemeqCwu X-Proofpoint-Spam-Info: AW1haW4tMjYwNjMwMDA5NSBTYWx0ZWRfX0obUKcfqpOrB w8I4DSUR5YMWU0rYdg3SrMVgPnOgpAT17QXlWbc/mtQz6ffSnfKZAynCQpvFQR9hfnxs2biRc6I FRnQKicpoy6qnJpnzmNg9vTfzdn3rXU= X-Authority-Analysis: v=2.4 cv=SINykuvH c=1 sm=1 tr=0 ts=6a439a9a cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=pGLkceISAAAA:8 a=K0VU_phB8ntNZSznENYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-30_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 priorityscore=1501 spamscore=0 phishscore=0 clxscore=1015 bulkscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606300095 On 6/30/26 11:28 AM, Pengyu Luo wrote: > On Tue, Jun 30, 2026 at 5:18 PM Konrad Dybcio > wrote: >> >> On 6/30/26 6:22 AM, Pengyu Luo wrote: >>> DSI panel driver have been added for a while, so add the DT node to >>> enable it. vdd{a,s}-supply for dsi, dsi_phy are blank since the DSDT >>> describes the wrong, no impact after manual disabling these wrong >>> supplies. >>> >>> Signed-off-by: Pengyu Luo >>> --- >> >> [...] >> >>> +&mdss0_dsi0 { >>> + /* real vdda is unknown */ >>> + >> >> L3B: DSI core 1.2 V (both?) >> L6B: DSI0/1 PLL and core 0.9 V >> > > Yes, that is what I saw in the DSDT, however, I can disable them > safely (hack the regulator driver to add a sysfs to handle these > regulators), the panel works well. L3B additionally powers CSIPHY2/3, EDP0/1, REFGEN (probably why it ends up being on), UFSPHY and USB1_PHY L6B additionally powers the same components, minus refgen and USB Konrad