[PATCH 1/8] dt-bindings: thermal: amlogic: Add support for T7

[Ronald Claveau]

Add the amlogic,t7-thermal compatible for the Amlogic T7 thermal sensor.

Unlike existing variants which use a phandle to the ao-secure syscon,
the T7 relies on a secure monitor interface described by a phandle and
a sensor index argument.

Introduce the amlogic,secure-monitor property as a phandle-array and
make amlogic,ao-secure or amlogic,secure-monitor conditionally required
depending on the compatible.

Signed-off-by: Ronald Claveau <linux-kernel-dev@xxxxxxxx>
---
 .../bindings/thermal/amlogic,thermal.yaml          | 40 +++++++++++++++++++++-
 1 file changed, 39 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml b/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
index 70b273271754b..85ee73c6e1161 100644
--- a/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
+++ b/Documentation/devicetree/bindings/thermal/amlogic,thermal.yaml
@@ -22,6 +22,7 @@ properties:
               - amlogic,g12a-ddr-thermal
           - const: amlogic,g12a-thermal
       - const: amlogic,a1-cpu-thermal
+      - const: amlogic,t7-thermal
 
   reg:
     maxItems: 1
@@ -42,12 +43,40 @@ properties:
   '#thermal-sensor-cells':
     const: 0
 
+  amlogic,secure-monitor:
+    description: phandle to the secure monitor
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    items:
+      - items:
+          - description: phandle to the secure monitor
+          - description: sensor index
+
 required:
   - compatible
   - reg
   - interrupts
   - clocks
-  - amlogic,ao-secure
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - amlogic,g12a-cpu-thermal
+              - amlogic,g12a-ddr-thermal
+              - amlogic,a1-cpu-thermal
+    then:
+      required:
+        - amlogic,ao-secure
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: amlogic,t7-thermal
+    then:
+      required:
+        - amlogic,secure-monitor
 
 unevaluatedProperties: false
 
@@ -62,4 +91,13 @@ examples:
         #thermal-sensor-cells = <0>;
         amlogic,ao-secure = <&sec_AO>;
     };
+  - |
+    a73_tsensor: temperature-sensor@20000 {
+        compatible = "amlogic,t7-thermal";
+        reg = <0x0 0x20000 0x0 0x50>;
+        interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clkc_periphs CLKID_TS>;
+        #thermal-sensor-cells = <0>;
+        amlogic,secure-monitor = <&sm 1>;
+    };
 ...

-- 
2.49.0