[PATCH v2] dt-bindings: soc: imx-iomuxc-gpr: Document the CSI mux

[Fabio Estevam <festevam@gmail.com>]

On i.MX6Q/6DL the following subnodes exist to describe the CSI port muxing:

- ipu1_csi0_mux
- ipu1_csi1_mux
- ipu2_csi0_mux
- ipu2_csi1_mux

As they were not documented, dt-schema emits warnings like:

  'ipu1_csi0_mux', 'ipu1_csi1_mux' do not match any of the regexes:
  '^pinctrl-[0-9]+$'

Add a top-level patternProperties entry for these CSI mux subnodes
and restrict it to i.MX6Q.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
Changes since v1:
- Restrict it to i.MX6Q (Frank).

 .../bindings/soc/imx/fsl,imx-iomuxc-gpr.yaml     | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/imx/fsl,imx-iomuxc-gpr.yaml b/Documentation/devicetree/bindings/soc/imx/fsl,imx-iomuxc-gpr.yaml
index 8451cb4dd87c..719de0489002 100644
--- a/Documentation/devicetree/bindings/soc/imx/fsl,imx-iomuxc-gpr.yaml
+++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx-iomuxc-gpr.yaml
@@ -50,6 +50,22 @@ properties:
     type: object
     $ref: /schemas/mux/reg-mux.yaml
 
+patternProperties:
+  "^ipu[12]_csi[01]_mux$":
+    type: object
+    $ref: /schemas/media/video-mux.yaml
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              const: fsl,imx6q-iomuxc-gpr
+    then:
+      patternProperties:
+        '^ipu[12]_csi[01]_mux$': false
+
 additionalProperties: false
 
 required:
-- 
2.34.1