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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-38a41fa7bd5sm3212991fa.15.2026.03.06.10.47.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Mar 2026 10:47:24 -0800 (PST) Date: Fri, 6 Mar 2026 20:47:23 +0200 From: Dmitry Baryshkov To: Pengyu Luo , Eugene Lepshy , Danila Tikhonov Cc: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Eugene Lepshy , Danila Tikhonov , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] drm/msm/dsi: remove bpc > 8 entries from allow list Message-ID: References: <20260306092518.37849-1-mitltlatltl@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260306092518.37849-1-mitltlatltl@gmail.com> X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzA2MDE3NyBTYWx0ZWRfX43k7K74T7GEg SIK4yPW9z65+o/oI2QpCTsDmTPaIeKFvBDFk/vcVohiq1T/wIpqSNd3MJZjCDcWueUJeofoOASc bvws5LtnvmHLhjnxeHIfw9luKicAxB/jlaTedg7zkHmvE1Qkqm+fxLGMoUkBSzVhiquCimcn3/h 24Bu4NuQQPTusvrxvlGEhGffyTfUjf6bw8+oOp//tzki9tBvIpavZgZYzDQMtdOelRo9WJomXoD gwUDvAEGbvfYRpt4NdILUHVuFqIuoxgd0OioFRX5l2b0V7a9f0U/tTq2T7Sf4VPlTe4yt3TNIkW XjxU+W+xFWqzr8Ru9QJG6x4eZRjjnuOyui+VzJZJbxoIJt0KN7dl90n4UMH9iGmax/yXsmeHIjo q/vvCS6+BZqboMEY+gC12l17+I/yTH+05XRskLUPzRO7d6jCpLCC/5nMPldeMW4RYEjjOsDcvjx Vbplxd8r/VPVTzeMhQg== X-Proofpoint-GUID: -kSnMlErybnO_f9ssc96pc3XgeLFcJ5_ X-Proofpoint-ORIG-GUID: -kSnMlErybnO_f9ssc96pc3XgeLFcJ5_ X-Authority-Analysis: v=2.4 cv=Q+HfIo2a c=1 sm=1 tr=0 ts=69ab213f cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=pGLkceISAAAA:8 a=pi0S-Vlqv1HzeT5xHfUA:9 a=CjuIK1q_8ugA:10 a=PEH46H7Ffwr30OY-TuGO:22 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=2026-03-06_05,2026-03-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 bulkscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 priorityscore=1501 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603060177 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 Fri, Mar 06, 2026 at 05:25:00PM +0800, Pengyu Luo wrote: > In upstream the msm, for bpc greater than 8 are not supported yet, > although the hardware block supports this. Remove them until we > support them. > > Fixes: b0e71c2637d1 ("drm/msm/dsi: Allow values of 10 and 12 for bits per component") > Signed-off-by: Pengyu Luo I hope Marijn, Danila or Eugeny can comment. The patch series with this patchset added 10 bpc panel and used it for one of the phones. > --- > drivers/gpu/drm/msm/dsi/dsi_host.c | 7 ++----- > 1 file changed, 2 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c > index e8e83ee61e..b60b26ddb0 100644 > --- a/drivers/gpu/drm/msm/dsi/dsi_host.c > +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c > @@ -1824,12 +1824,9 @@ static int dsi_populate_dsc_params(struct msm_dsi_host *msm_host, struct drm_dsc > > switch (dsc->bits_per_component) { > case 8: > - case 10: > - case 12: > /* > - * Only 8, 10, and 12 bpc are supported for DSC 1.1 block. > - * If additional bpc values need to be supported, update > - * this quard with the appropriate DSC version verification. > + * In the upstream msm, only 8 bpc is supported for DSC 1.1/1.2 > + * block. > */ > break; > default: > -- > 2.53.0 > -- With best wishes Dmitry