[PATCH v2 1/2] dt-bindings: gpio: realtek-otto: Add RTL9311B

[Joshua Scott]

The Realtek RTL9311B is a network switch with integrated ARMv8 CPU. It
has the same GPIO controller as the RTL9310, with one bank of 20 GPIOs.
Add a compatible for it, with the RTL9310 compatible as a fallback.

Signed-off-by: Joshua Scott <joshua.scott@xxxxxxxxxxxxxxxxxxx>
---
Changes in v2:
- Add the RTL9311B as its own compatible list, with "realtek,rtl9310-gpio"
  as a fallback, instead of adding it to the enum used with
  "realtek,otto-gpio" alone

 .../bindings/gpio/realtek,otto-gpio.yaml      | 22 ++++++++++++-------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml b/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
index 33c25df7b815..a337345a1e90 100644
--- a/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/realtek,otto-gpio.yaml
@@ -15,6 +15,7 @@ description: |
   of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts.
   Each bank's interrupts are cascased into one interrupt line on the parent
   interrupt controller, if provided.
+  The Arm-based RTL9311B has the same controller, with one bank.
   This binding allows defining a single bank in the devicetree. The interrupt
   controller is not supported on the fallback compatible name, which only
   allows for GPIO port use.
@@ -24,14 +25,19 @@ properties:
     pattern: "^gpio@[0-9a-f]+$"
 
   compatible:
-    items:
-      - enum:
-          - realtek,rtl8380-gpio
-          - realtek,rtl8390-gpio
-          - realtek,rtl9300-gpio
-          - realtek,rtl9310-gpio
-          - realtek,rtl9607-gpio
-      - const: realtek,otto-gpio
+    oneOf:
+      - items:
+          - enum:
+              - realtek,rtl8380-gpio
+              - realtek,rtl8390-gpio
+              - realtek,rtl9300-gpio
+              - realtek,rtl9310-gpio
+              - realtek,rtl9607-gpio
+          - const: realtek,otto-gpio
+      - items:
+          - const: realtek,rtl9311b-gpio
+          - const: realtek,rtl9310-gpio
+          - const: realtek,otto-gpio
 
   reg: true
 
-- 
2.53.0