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[2001:14ba:a0c3:3a00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-560827b3ac5sm751954e87.147.2025.09.02.07.57.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Sep 2025 07:57:11 -0700 (PDT) Date: Tue, 2 Sep 2025 17:57:09 +0300 From: Dmitry Baryshkov To: Jun Nie Cc: Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Jessica Zhang , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v15 00/13] drm/msm/dpu: Support quad pipe with dual-interface Message-ID: <53z5v73r4ixmecpo6z3a6rnsmkgjjftbrwke24bf7mkr5ffh64@2viglv4lnows> References: <20250819-v6-16-rc2-quad-pipe-upstream-v15-0-2c7a85089db8@linaro.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250819-v6-16-rc2-quad-pipe-upstream-v15-0-2c7a85089db8@linaro.org> X-Proofpoint-GUID: pl3eCVHtkUjOQwWI6d5Xtg3UX-PJyjyA X-Proofpoint-ORIG-GUID: pl3eCVHtkUjOQwWI6d5Xtg3UX-PJyjyA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODMwMDAyNyBTYWx0ZWRfX3x2mXYSPxv9d 1apn436C/VJYv9G/tlFXPGFcnB3jKlBBo0fLkmxieSmlGCsKB3fs+Er0KaWhJJ74Wqwmf6Xk9WO HPIgmQNXV8YN4Oer2hTQ72xBvkFo71azs6djrFaOCqpK70/kIMO/WDXeRacZed+apqIY+YgqNq/ cZpTX3jCy3gsk6xMkVBdyzRcoeARs7aHY/NcqlBdcSm72UXc4sN6bY+82C++fj9DOBvPO+KyHl8 U0LgDgKCSp1xdcVHARU5EcWUKO3Mo3dPAfVfjsv8HtxXEAD9SchmNw3Mii9Ar/+JDJuLrCVarJ7 tvggE4EEXbthRwtiZbJUUkdccA4Wj5DcDyGJU7qvyXkARBpgx0hEWrtBXl/uC4JowMzGTqE5QdU UEcwqidg X-Authority-Analysis: v=2.4 cv=NrDRc9dJ c=1 sm=1 tr=0 ts=68b705ca cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=yJojWOMRYYMA:10 a=VwQbUJbxAAAA:8 a=KKAkSRfTAAAA:8 a=e5mUnYsNAAAA:8 a=NuLzGU6fH5aT33uQb0QA:9 a=CjuIK1q_8ugA:10 a=a_PwQJl-kcHnX1M80qC6:22 a=cvBusfyB2V15izCimMoJ:22 a=Vxmtnl_E_bksehYqCbjh: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=2025-09-02_05,2025-08-28_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 priorityscore=1501 phishscore=0 impostorscore=0 spamscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508300027 On Tue, Aug 19, 2025 at 09:30:54AM +0800, Jun Nie wrote: > 2 or more SSPPs and dual-DSI interface are need for super wide panel. > And 4 DSC are preferred for power optimal in this case due to width > limitation of SSPP and MDP clock rate constrain. This patch set > extends number of pipes to 4 and revise related mixer blending logic > to support quad pipe. All these changes depends on the virtual plane > feature to split a super wide drm plane horizontally into 2 or more sub > clip. Thus DMA of multiple SSPPs can share the effort of fetching the > whole drm plane. > > The first pipe pair co-work with the first mixer pair to cover the left > half of screen and 2nd pair of pipes and mixers are for the right half > of screen. If a plane is only for the right half of screen, only one > or two of pipes in the 2nd pipe pair are valid, and no SSPP or mixer is > assinged for invalid pipe. > > For those panel that does not require quad-pipe, only 1 or 2 pipes in > the 1st pipe pair will be used. There is no concept of right half of > screen. > > For legacy non virtual plane mode, the first 1 or 2 pipes are used for > the single SSPP and its multi-rect mode. > > Changes in v15: > - Polish logic in sspp check and assignment. > - Link to v14: https://lore.kernel.org/r/20250801-v6-16-rc2-quad-pipe-upstream-v14-0-b626236f4c31@linaro.org I tried picking up these patches into the msm-next-lumag, however they seem to trigger a lot of IGT test failures. See [1]. Could you please take a look at those failures? Note, virtual planes are still disabled by default. [1] https://gitlab.freedesktop.org/drm/msm/-/pipelines/1502582 -- With best wishes Dmitry