[PATCH v4 2/4] dt-bindings: gpio: pl061: add Ambarella CV75 variant

[Long Zhao via B4 Relay <devnull+longzhao.ambarella.com@kernel.org>]

From: Long Zhao <longzhao@ambarella.com>

Document the Ambarella CV75 GPIO bank compatible and the synthetic
arm,primecell-periphid used with the PL061 binding.

Signed-off-by: Long Zhao <longzhao@ambarella.com>
---
 .../devicetree/bindings/gpio/pl061-gpio.yaml       | 35 +++++++++++++++++++---
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/pl061-gpio.yaml b/Documentation/devicetree/bindings/gpio/pl061-gpio.yaml
index 4d970e55104b..414f8d4a3976 100644
--- a/Documentation/devicetree/bindings/gpio/pl061-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/pl061-gpio.yaml
@@ -15,7 +15,9 @@ select:
   properties:
     compatible:
       contains:
-        const: arm,pl061
+        enum:
+          - arm,pl061
+          - ambarella,cv75-gpio
   required:
     - compatible
 
@@ -24,9 +26,20 @@ properties:
     pattern: "^gpio@[0-9a-f]+$"
 
   compatible:
-    items:
-      - const: arm,pl061
-      - const: arm,primecell
+    oneOf:
+      - items:
+          - const: arm,pl061
+          - const: arm,primecell
+      - items:
+          - const: ambarella,cv75-gpio
+          - const: arm,primecell
+
+  arm,primecell-periphid:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Value to override the hardware PrimeCell peripheral ID. Ambarella
+      variants use a synthetic ID retaining the PL061 part number because
+      the hardware has no discoverable ID or assigned designer ID.
 
   reg:
     maxItems: 1
@@ -57,6 +70,20 @@ properties:
     minItems: 1
     maxItems: 8
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ambarella,cv75-gpio
+    then:
+      properties:
+        arm,primecell-periphid:
+          const: 0x00000061
+      required:
+        - arm,primecell-periphid
+        - gpio-ranges
+
 required:
   - compatible
   - reg

-- 
2.34.1