From: Sumit Garg <sumit.garg@oss.qualcomm.com>
Date: Thu, 22 Jan 2026 12:10:40 +0000 (+0530)
Subject: dt-bindings: display: msm: qcm2290-mdss: Fix iommus property
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=966a08c293cb9290d3fe932961404e87b3f81327;p=thirdparty%2Fkernel%2Flinux.git

dt-bindings: display: msm: qcm2290-mdss: Fix iommus property

Fix IOMMU DT propety for display via dropping SMMU stream IDs which
relates to secure context bank. Assigning Linux kernel (HLOS) VMID
to secure context bank stream IDs is incorrect. The maximum value
for iommus property is updated accordingly.

These DT bindings changes should be backwards compatible.

Signed-off-by: Sumit Garg <sumit.garg@oss.qualcomm.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20260122121042.579270-2-sumit.garg@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml b/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
index f0cdb5422688..2772cdec7e42 100644
--- a/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
+++ b/Documentation/devicetree/bindings/display/msm/qcom,qcm2290-mdss.yaml
@@ -33,7 +33,7 @@ properties:
       - const: core
 
   iommus:
-    maxItems: 2
+    maxItems: 1
 
   interconnects:
     items:
@@ -107,9 +107,7 @@ examples:
         interconnect-names = "mdp0-mem",
                              "cpu-cfg";
 
-        iommus = <&apps_smmu 0x420 0x2>,
-                 <&apps_smmu 0x421 0x0>;
-        ranges;
+        iommus = <&apps_smmu 0x420 0x2>;
 
         display-controller@5e01000 {
             compatible = "qcom,qcm2290-dpu";