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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 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] 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; 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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 >