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Thu, 15 Jan 2026 22:32:29 -0800 (PST) X-Received: by 2002:a17:902:d48c:b0:2a0:e223:f6e6 with SMTP id d9443c01a7336-2a718949652mr14796875ad.46.1768545149243; Thu, 15 Jan 2026 22:32:29 -0800 (PST) Received: from [10.219.57.14] ([202.46.23.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a7190ab959sm10752865ad.20.2026.01.15.22.32.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Jan 2026 22:32:28 -0800 (PST) Message-ID: <70e88549-5448-4a06-a20f-ad4395eb7350@oss.qualcomm.com> Date: Fri, 16 Jan 2026 12:02:23 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] iommu/arm-smmu-qcom: Restore ACTLR settings for MDSS on sa8775p To: will@kernel.org Cc: catalin.marinas@arm.com, charan.kalla@oss.qualcomm.com, dmitry.baryshkov@oss.qualcomm.com, iommu@lists.linux.dev, joro@8bytes.org, kernel-team@android.com, konrad.dybcio@oss.qualcomm.com, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, robin.clark@oss.qualcomm.com, robin.murphy@arm.com References: <20260109204551.845959-1-bibek.patro@oss.qualcomm.com> Content-Language: en-US From: Bibek Kumar Patro In-Reply-To: <20260109204551.845959-1-bibek.patro@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE2MDA1MSBTYWx0ZWRfXyS25GbK4MmW9 Ow1KVH+iT2vlUh+Yntio+72IYhWaQFmsxhdHgHDIomw/U2UL4ulzvtbQjvf3zCalRimmNS7LFlU a/986Ha4htsVR8vATyaCc9ai5nVg8uQ2xAnLq3134kF6o9jq3yczxarIS59vYHzRtx+oYF3Zosp 512Rapaot8HgCzrzp7/24wyrSa8xzluxd7P7ZYsYM39NvCtjZYCfa9ZLVk1Xo5S2AX8O3znm1Vv Nf1DqtL/0TUzMriF0oFikYfqyQjBZfXcxRRDS66hW7OeOJxeK3K58GxuCsyXlIZKaa0nFfFu7B/ R2JOhElkhBMjRr3Zpax2yJ0/1LUC/QSdL8Hf+ccUdM0lUAX0sg+/3n+I5ep3v+uodgeBtTXZPYD gtQpJmjCKAMyP5G/reny5Jl6+aPCvLTkCPX1EwV0UJrGg6bypCzQsX+uzR6jE+LS/zfYVCKfhg8 yztonKI2l05G53eyiiQ== X-Authority-Analysis: v=2.4 cv=Sv6dKfO0 c=1 sm=1 tr=0 ts=6969db7e cx=c_pps a=JL+w9abYAAE89/QcEU+0QA==:117 a=j4ogTh8yFefVWWEFDRgCtg==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=x8gyvrLTtEN-rIJzB5wA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=324X-CrmTo6CU4MGRt3R:22 X-Proofpoint-GUID: 8NwKEF3bo9N8Uiy7UIchjW7WjATy4QKk X-Proofpoint-ORIG-GUID: 8NwKEF3bo9N8Uiy7UIchjW7WjATy4QKk X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-16_02,2026-01-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 phishscore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601160051 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260115_223231_407029_E95EBA72 X-CRM114-Status: GOOD ( 19.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Will, Thanks for the clarification in [1]. I’ve sent the follow‑up patch on top, including the explanation in the commit message as suggested. Please lmk if any further adjustment is needed. https://lore.kernel.org/all/aWDsFoEe7PHQaL9F@willie-the-truck/ Thanks & Regards, Bibek On 1/10/2026 2:15 AM, bibek.patro@oss.qualcomm.com wrote: > From: Bibek Kumar Patro > > The ACTLR configuration for the sa8775p MDSS client was inadvertently > dropped while reworking the commit f91879fdf70b ("iommu/arm-smmu-qcom: > Add actlr settings for mdss on Qualcomm platforms"). Without this > entry, the sa8775p MDSS block does not receive the intended default > ACTLR configuration. > > Restore the missing compatible entry so that the platform receives the > expected behavior. > > Signed-off-by: Bibek Kumar Patro > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > index 456d5146831e..718d102356d9 100644 > --- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c > @@ -43,6 +43,8 @@ static const struct of_device_id qcom_smmu_actlr_client_of_match[] = { > .data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) }, > { .compatible = "qcom,qcm2290-mdss", > .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) }, > + { .compatible = "qcom,sa8775p-mdss", > + .data = (const void *) (PREFETCH_DEFAULT | CMTLB) }, > { .compatible = "qcom,sc7280-mdss", > .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) }, > { .compatible = "qcom,sc7280-venus", > -- > 2.34.1 >