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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-12ab97efb42sm11000274c88.7.2026.03.30.04.52.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 30 Mar 2026 04:52:29 -0700 (PDT) Message-ID: Date: Mon, 30 Mar 2026 19:52:23 +0800 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 12/38] drm/msm/dp: introduce max_streams for DP controller MST support To: Dmitry Baryshkov Cc: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Abhinav Kumar References: <20250825-msm-dp-mst-v3-0-01faacfcdedd@oss.qualcomm.com> <20250825-msm-dp-mst-v3-12-01faacfcdedd@oss.qualcomm.com> <99d6795e-1cea-4e7f-b8b6-97f55af55d8d@oss.qualcomm.com> Content-Language: en-US From: Yongxing Mou In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzMwMDA5MyBTYWx0ZWRfX1nOKP+UYQlPn Odvvx8Stvjk9lAfr1+9i2b4ss1bad4QSOJry6M20ixW8MuOgafRBaU9YDaDjTR2g1Np7L3nPUGr 9N4IK/Mi8HLMzxbUHx9W4R9CPh4w35/sYRdLUFz8WiRVDQwct2+JjFgsU60HbHe1wTy9YFBvxL/ v/JKpqP9zElsXVS52MgUIxe2C3BSqb0GYubAymL0gPANFFUjVqff7Y8LAUPkySqSpz/V04Ta+Fl 52dTys8lAGph8JOZQsO1fSBK75e0tnBSlcVqW3NUAXTDQAFZoHBZ58atrfmMN8dg43CrnpkhnEo 3rjJ7+aGbnwO00UcnZOVTlU8nFxyWIKIvJjgCRDfKeXCUxJVUuH90LcX0H9oJPQ61uVHz5R2tqV 9ZAefcwDPxXWLtCCLEmSkilIhrfq27ov3uRPbAwRULoMeCUge/SkjMUiQHZAKAczEcAT6j9zmo4 7N+Da1aya8mojZnmzhQ== X-Authority-Analysis: v=2.4 cv=Fbw6BZ+6 c=1 sm=1 tr=0 ts=69ca63ff cx=c_pps a=PfFC4Oe2JQzmKTvty2cRDw==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=COk6AnOGAAAA:8 a=EUspDBNiAAAA:8 a=fQFtLZBTUO1RzxlNfjoA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=6Ab_bkdmUrQuMsNx7PHu:22 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-ORIG-GUID: sMtQXddpY09R8_VAG4GHf1UdtrVMjKZe X-Proofpoint-GUID: sMtQXddpY09R8_VAG4GHf1UdtrVMjKZe 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=2026-03-29_05,2026-03-28_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 adultscore=0 impostorscore=0 clxscore=1015 phishscore=0 suspectscore=0 bulkscore=0 lowpriorityscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603300093 On 3/30/2026 7:42 PM, Dmitry Baryshkov wrote: > On Mon, Mar 30, 2026 at 07:32:38PM +0800, Yongxing Mou wrote: >> >> >> On 3/30/2026 6:35 PM, Dmitry Baryshkov wrote: >>> On Mon, Mar 30, 2026 at 05:57:13PM +0800, Yongxing Mou wrote: >>>> >>>> >>>> On 8/26/2025 1:42 AM, Dmitry Baryshkov wrote: >>>>> On Mon, Aug 25, 2025 at 10:15:58PM +0800, Yongxing Mou wrote: >>>>>> From: Abhinav Kumar >>>>>> >>>>>> Introduce the `mst_streams` field in each DP controller descriptor to >>>>>> specify the number of supported MST streams. Most platforms support 2 or >>>>>> 4 MST streams, while platforms without MST support default to a single >>>>>> stream (`DEFAULT_STREAM_COUNT = 1`). >>>>>> >>>>>> This change also accounts for platforms with asymmetric stream support, >>>>>> e.g., DP0 supporting 4 streams and DP1 supporting 2. >>>>> >>>>> How? >>>>> >>>> Each DP controller have it own msm_dp_desc ... >>> >>> Why do you need to mention it? >>> >> Sorry, I may have misunderstood your “How?”. Could you please clarify what >> aspect you are referring to (commit message wording vs. the actual >> implementation)? > > "Yes." You mention it as if something was done explicitly to account for > those differences. And then fail to say, what / how. My assumtion is > that this comes from the commit text style (see > Documentation/process/submitting-patches.rst). Please use imperative > language rather than descriptive. It will make such questions go away. > Thanks for the clarification and for pointing this out. Will rework the commit message in the next revision. >>>>>> >>>>>> Signed-off-by: Abhinav Kumar >>>>>> Signed-off-by: Yongxing Mou >