[PATCH v4 1/3] dt-bindings: lcdif: Document a imx6sx-lcdif fallback

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

imx6sx.dtsi has the following lcdif entries:

compatible = "fsl,imx6sx-lcdif", "fsl,imx28-lcdif";

This causes the following dt-schema warning:

['fsl,imx6sx-lcdif', 'fsl,imx28-lcdif'] is too long

To keep DT compatibility, document 'fsl,imx28-lcdif' as a possible
'fsl,imx6sx-lcdif' fallback.

Signed-off-by: Fabio Estevam <festevam@denx.de>
---
Changes since v3:
- Also update the example.

 Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index 8e3a98aeec32..aa3204b6aff9 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -19,7 +19,6 @@ properties:
       - enum:
           - fsl,imx23-lcdif
           - fsl,imx28-lcdif
-          - fsl,imx6sx-lcdif
           - fsl,imx8mp-lcdif
           - fsl,imx93-lcdif
       - items:
@@ -32,6 +31,10 @@ properties:
               - fsl,imx8mn-lcdif
               - fsl,imx8mq-lcdif
           - const: fsl,imx6sx-lcdif
+      - items:
+          - enum:
+              - fsl,imx6sx-lcdif
+          - const: fsl,imx28-lcdif
 
   reg:
     maxItems: 1
@@ -182,7 +185,7 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
     display-controller@2220000 {
-        compatible = "fsl,imx6sx-lcdif";
+        compatible = "fsl,imx6sx-lcdif", "fsl,imx28-lcdif";
         reg = <0x02220000 0x4000>;
         interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
         clocks = <&clks IMX6SX_CLK_LCDIF1_PIX>,
-- 
2.34.1