[PATCH 02/22] dt-bindings: gpio: fsl-imx-gpio: Add gpio-ranges property

[Krzysztof Kozlowski]

The GPIO controller node can have gpio-ranges property.  This fixes
dtbs_check warnings like:

  arch/arm64/boot/dts/freescale/imx8mm-evk.dt.yaml: gpio at 30200000: 'gpio-ranges' does not match any of the regexes: 'pinctrl-[0-9]+'
    From schema: Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml

Signed-off-by: Krzysztof Kozlowski <krzk at kernel.org>
---
 .../devicetree/bindings/gpio/fsl-imx-gpio.yaml    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
index 454db20c2d1a..1fac69573bb9 100644
--- a/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/fsl-imx-gpio.yaml
@@ -51,6 +51,9 @@ properties:
 
   gpio-controller: true
 
+  gpio-ranges:
+    maxItems: 1
+
 required:
   - compatible
   - reg
@@ -62,6 +65,18 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx8mp-gpio
+    then:
+      properties:
+        gpio-ranges:
+          minItems: 1
+          maxItems: 2
+
 examples:
   - |
     gpio0: gpio at 73f84000 {
-- 
2.17.1