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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b976cf02b36sm44933466b.50.2026.03.13.05.56.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 13 Mar 2026 05:56:48 -0700 (PDT) Message-ID: <16501e2a-01be-4009-adf8-278f3a42b040@oss.qualcomm.com> Date: Fri, 13 Mar 2026 13:56:45 +0100 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 01/27] drm/msm/mdss: correct UBWC programming sequences To: Dmitry Baryshkov , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Bjorn Andersson , Konrad Dybcio , Akhil P Oommen Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20260312-ubwc-rework-v3-0-b7e8f800176a@oss.qualcomm.com> <20260312-ubwc-rework-v3-1-b7e8f800176a@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260312-ubwc-rework-v3-1-b7e8f800176a@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: TgIuE0jQ9hDoY0ybMzXFYa0RRc7AGzqQ X-Proofpoint-GUID: TgIuE0jQ9hDoY0ybMzXFYa0RRc7AGzqQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEzMDEwMiBTYWx0ZWRfXzDSDsiPmQk3l 5RIWsJ0CrIhYwZ96Ct0TEbUHUO16Gaeck8MGoGspW2cCYwiupsWaQUyIrqFaLZnXHk5hXe7UjH+ tF4R1IA8aH/W3saHJD3ONP8yI2ZSHgEmNST/+z3GgOpOtAsP4FjZPUX3wbeFOSHPvJr0L1FecYk tZ8z0eERGjerBnqprNxT7WHo8V1kYzq72UZnOcJmZYUmr5i4ppq/s5tynjtDjrp/xr+MA40kpL7 acaStHj0vRZl6XNW69choj0gAcVJkp7F0VPOJYuoemgXlep3MHYK48SyXclrwBXeUFsQL06Aa08 nZNLEAcYWvesDRUalMfdH2Rqc56JmsOe+3xpfa+25cLeo7d7vZbNs2T7EA7i+k70ZOexfxEXU8Y xL1wjqLV0d46FcjyTUY7310mH7WDaHKtDvfiOOzHh3pjDy9FlddDH8DFrdTPDlN3x3nLrHS49Iz 70plunpQCFZyCnSu+Zg== X-Authority-Analysis: v=2.4 cv=BpiQAIX5 c=1 sm=1 tr=0 ts=69b40992 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=EUspDBNiAAAA:8 a=g9AtgMIdhz7_Ts0mvgYA:9 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ: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=2026-03-13_02,2026-03-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 phishscore=0 adultscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 spamscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603130102 On 3/12/26 2:29 PM, Dmitry Baryshkov wrote: > The UBWC registers in the MDSS region are not dependent on the UBWC > version (it is an invalid assumption we inherited from the vendor SDE > driver). Instead they are dependent only on the MDSS core revision. > > Rework UBWC programming to follow MDSS revision and to use required (aka > encoder) UBWC version instead of the ubwc_dec_version. > > Fixes: d68db6069a8e ("drm/msm/mdss: convert UBWC setup to use match data") > Signed-off-by: Dmitry Baryshkov > --- Reviewed-by: Konrad Dybcio Konrad