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[2001:14ba:a0c3:3a00::4c9]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-3365e5da244sm30163331fa.58.2025.08.28.04.05.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Aug 2025 04:05:10 -0700 (PDT) Message-ID: <28b33851-24eb-428f-b046-b145342fd982@oss.qualcomm.com> Date: Thu, 28 Aug 2025 14:05:09 +0300 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 v3 01/14] dt-bindings: display/msm: dp-controller: Add sm6150 To: Xiangxu Yin Cc: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kuogee Hsieh , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, fange.zhang@oss.qualcomm.com, yongxing.mou@oss.qualcomm.com, tingwei.zhang@oss.qualcomm.com, Bjorn Andersson , Konrad Dybcio , quic_lliu6@quicinc.com References: <20250820-add-displayport-support-for-qcs615-platform-v3-0-a43bd25ec39c@oss.qualcomm.com> <20250820-add-displayport-support-for-qcs615-platform-v3-1-a43bd25ec39c@oss.qualcomm.com> <75ra2ofecqu6tid6kr4hnyuztpl6jjaq2ksyquafyajhq2sa4d@4tkggrdqky7y> <8918feef-219e-4e69-8901-367189f5066d@oss.qualcomm.com> Content-Language: en-US From: Dmitry Baryshkov In-Reply-To: <8918feef-219e-4e69-8901-367189f5066d@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODI4MDA4NSBTYWx0ZWRfXzLQfjPC5axEN kT0pJdMA2CJrM4pg332/Fv4sVMLX/+ixqd8P6bdBAxH23u+bKzMIril49Y3+GL+6ZFIv8Lc7vZ7 8TD8OmzDMc0qC6c8ZeSSmEJETFKAHY1RlH21XijFiH6tva10APHwSr3GN1wZutyw9kzYHeDQWzw yiT25MIe0ngMh12IvQOgnVvvR+WCQ1Msf48gPoXuLpDo//1Fcuvyzk0CJvW6z5Cvx7Xn/n0JPww ZCfCXbcfuzKRF6Ll4o36k8zg7+CwJjB6/I8fH+8OggzA5FOJ3l0MDyw4QmFFM8Gy1KJYLPUEi77 ldKqobmnGY+IOckTHiTGSZyMkL1GyqzRgWpzhkbs0ysWeoUNlhEisA5aPfNow77d1sF67fEGwMu fAbzWKpD X-Proofpoint-GUID: OmicsU5rO7tLDHDDoP6DHGjXcZaJoMAJ X-Proofpoint-ORIG-GUID: OmicsU5rO7tLDHDDoP6DHGjXcZaJoMAJ X-Authority-Analysis: v=2.4 cv=P7c6hjAu c=1 sm=1 tr=0 ts=68b037ea cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=EUspDBNiAAAA:8 a=KSO3TaR41uafEWVwNF4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-28_03,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 adultscore=0 phishscore=0 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508280085 On 28/08/2025 07:51, Xiangxu Yin wrote: > > On 8/20/2025 6:18 PM, Dmitry Baryshkov wrote: >> On Wed, Aug 20, 2025 at 05:34:43PM +0800, Xiangxu Yin wrote: >>> Add DisplayPort controller for Qualcomm SM6150 SoC. >>> While SM6150 currently shares the same configuration as SC7180, >>> its hardware capabilities differ. Explicitly listing it ensures clarity >>> and avoids potential issues if SC7180 support evolves in the future. >> I assume, it has no MST support. Am I right? > > > From sm6150 ipcat, I found MST-related registers and pixel1 clk definition. Then please describe MST as the main difference between SM6150 and SC7180 (which doesn't have MST). Also this needs to be rebased on top of the MST bindings. I've picked up the latest posted revision, but basing on the on-list discussion I might need to drop it and post another iteration. > > According to the hardware spec, MST is supported, but due to limitations in clock and pipe resources, > > the maximum concurrency capability is restricted to 1920x1200@60 + 1280x720@60. > > >>> Signed-off-by: Xiangxu Yin >>> --- >>> Documentation/devicetree/bindings/display/msm/dp-controller.yaml | 1 + >>> 1 file changed, 1 insertion(+) >>> >>> diff --git a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>> index 9923b065323bbab99de5079b674a0317f3074373..996d0132e084d401db85014a1a4e445d00d62ed8 100644 >>> --- a/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>> +++ b/Documentation/devicetree/bindings/display/msm/dp-controller.yaml >>> @@ -27,6 +27,7 @@ properties: >>> - qcom,sc8280xp-dp >>> - qcom,sc8280xp-edp >>> - qcom,sdm845-dp >>> + - qcom,sm6150-dp >>> - qcom,sm8350-dp >>> - qcom,sm8650-dp >>> - items: >>> >>> -- >>> 2.34.1 >>> -- With best wishes Dmitry