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[v10,01/15] dt-bindings: firmware: qcom,scm: add memory-region for sa8775p

Message ID 20240527-shm-bridge-v10-1-ce7afaa58d3a@linaro.org
State New
Headers show
Series [v10,01/15] dt-bindings: firmware: qcom,scm: add memory-region for sa8775p | expand

Commit Message

Bartosz Golaszewski May 27, 2024, 12:54 p.m. UTC 
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Document a new property (currently only for sa8775p) that describes the
memory region reserved for communicating with the TrustZone.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
index 47d3d2d52acd..2cc83771d8e7 100644
--- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
+++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
@@ -93,6 +93,11 @@  properties:
       protocol to handle sleeping SCM calls.
     maxItems: 1
 
+  memory-region:
+    description:
+      Phandle to the memory region reserved for the shared memory bridge to TZ.
+    maxItems: 1
+
   qcom,sdi-enabled:
     description:
       Indicates that the SDI (Secure Debug Image) has been enabled by TZ
@@ -193,6 +198,16 @@  allOf:
     then:
       properties:
         interrupts: false
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - qcom,scm-sa8775p
+    then:
+      properties:
+        memory-region: false
 
 required:
   - compatible