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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5a13f598ff8sm1219628e87.16.2026.03.08.09.55.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 08 Mar 2026 09:55:24 -0700 (PDT) Date: Sun, 8 Mar 2026 18:55:21 +0200 From: Dmitry Baryshkov To: Pengyu Luo 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 Subject: Re: [PATCH v2] drm/msm/dsi: fix pclk calculation for bonded dsi Message-ID: References: <20260308070628.482527-1-mitltlatltl@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260308070628.482527-1-mitltlatltl@gmail.com> X-Authority-Analysis: v=2.4 cv=IdqKmGqa c=1 sm=1 tr=0 ts=69adaa00 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=Fte5J7dvKBLabNbbCpwA:9 a=CjuIK1q_8ugA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-GUID: zMU8lglWF-Lcew1H9mwkB1teFDcG4SjI X-Proofpoint-ORIG-GUID: zMU8lglWF-Lcew1H9mwkB1teFDcG4SjI X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA4MDE1NSBTYWx0ZWRfX7BaXPM2O8anR RLQ80urMNrZYBT5xaHpBLidOwarv0+JR35HParUesejdxxsC2yvR5pvlHtdECq4lvVAinktZsDs jUmehPaf7OmRCwONlzGmG/3Aa5hDNd+7b5I8xBESIcGwUN9KONP7NTk7gyIMuEAN1ZNRxFzRUQ6 JsFWoUUt1W+i4CVtvOqCZ+wlQ6nMr26logSlXk0q39UfvwM8MOX+IEbfknDOXgliXKBQ4750thS 1tVLzkJxPf7LipVYkYNcEytuMjotfGdfTPp2Mo1mh/bf2Htpm72YH+Y3AEXMJ2PtypBFDkF/JET 5DrkOEgHaOqeqrsRXnYbYDGnyHux8EeqpwSLGiMDKatTowccZbk2c5YD81nwhktaUuF370hSh9J trZarR4YgcMliCCx6j0jMk9LbMkywa+Igfe5aFtgm/xtyOuCkysgxESxZSx9HX+jnkkrKtH73wU 9dSB7wuBWrvcMdSt0GQ== 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=2026-03-08_05,2026-03-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 spamscore=0 malwarescore=0 clxscore=1015 phishscore=0 priorityscore=1501 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603080155 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Sun, Mar 08, 2026 at 03:06:27PM +0800, Pengyu Luo wrote: > Recently, we round up new_hdisplay once at most, for bonded dsi, we > may need twice, since they are independent links, we should round up > each half separately. This also aligns with the hdisplay we program > later in dsi_timing_setup() > > Example: > full_hdisplay = 1904, dsc_bpp = 8, bpc = 8 > new_full_hdisplay = DIV_ROUND_UP(1904 * 8, 8 * 3) = 635 > > if we use half display > new_half_hdisplay = DIV_ROUND_UP(952 * 8, 8 * 3) = 318 > new_full_display = 636 > > Fixes: 7c9e4a554d4a ("drm/msm/dsi: Reduce pclk rate for compression") > Signed-off-by: Pengyu Luo > Reviewed-by: Dmitry Baryshkov > --- > v2: add a parameter desciption to the function doc (kernel test robot) > --- > drivers/gpu/drm/msm/dsi/dsi_host.c | 32 +++++++++++++++++++++++------- > 1 file changed, 25 insertions(+), 7 deletions(-) The previous version has been picked up alrady (before the report came). Would you mind sending a fix for it, describing the parameter? -- With best wishes Dmitry