[PATCH v2] iommu/arm-smmu-qcom: Add SM8450 MDSS compatible

Esteban Urrutia via B4 Relay <[email protected]> Sat, 11 Jul 2026 23:14:01 -0400
Newsgroups org.kernel.vger.phone-devel,dev.linux.lists.iommu,org.infradead.lists.linux-arm-kernel,org.kernel.feeds.b4-sent,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
From: Esteban Urrutia <[email protected]>

Add the compatible for the MDSS client on the Snapdragon 8 Gen 1 so it can
be properly configured by the IOMMU driver.

Otherwise, there is an unhandled context fault, because the framebuffer is
already configured in UEFI.

Reviewed-by: Konrad Dybcio <[email protected]>
Signed-off-by: Esteban Urrutia <[email protected]>
---
This patch allows the MDSS driver to properly function on SM8450 based
devices.
---
Changes in v2:
- Split series in subseries (dispcc, dts, qmp, smmu)
- Link to v1: https://patch.msgid.link/[email protected]
---
 drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index e2c914fccd6f..795e8ec7e8fa 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -425,6 +425,7 @@ static const struct of_device_id qcom_smmu_client_of_match[] __maybe_unused = {
 	{ .compatible = "qcom,sm6375-mdss" },
 	{ .compatible = "qcom,sm8150-mdss" },
 	{ .compatible = "qcom,sm8250-mdss" },
+	{ .compatible = "qcom,sm8450-mdss" },
 	{ .compatible = "qcom,x1e80100-mdss" },
 	{ }
 };

---
base-commit: bee763d5f341b99cf472afeb508d4988f62a6ca1
change-id: 20260711-sm8450-qol-smmu-57ed91ed0397

Best regards,
--  
Esteban Urrutia <[email protected]>