[PATCH v4 2/3] dt-bindings: lcdif: Expand the imx6sl/imx6sll fallbacks

[Fabio Estevam <festevam@xxxxxxxxx>]

From: Fabio Estevam <festevam@xxxxxxx>

mx6sl.dtsi and imx6sll.dtsi have the following lcdif entries:

compatible = "fsl,imx6sl-lcdif", "fsl,imx28-lcdif";

This causes dt-schema warnings as the current binding only
allow 'fsl,imx6sx-lcdif' as fallback.

['fsl,imx6sl-lcdif', 'fsl,imx28-lcdif'] is too long
['fsl,imx6sll-lcdif', 'fsl,imx28-lcdif'] is too long

The imx6sx-lcdif programming model has more advanced features, such
as overlay plane and the CRC32 support than the imx28-lcdif IP.

Expand the imx6sl/imx6sll lcdif fallbacks to accept a less specific
fsl,imx28-lcdif fallback:

compatible = "fsl,imx6sl-lcdif", "fsl,imx6sx-lcdif", "fsl,imx28-lcdif";

This helps keeping DT compatibility as well as using the more advanced
lcdif features found on imx6sl and imx6sll.

Signed-off-by: Fabio Estevam <festevam@xxxxxxx>
---
Changes since v3:
- None.

 Documentation/devicetree/bindings/display/fsl,lcdif.yaml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index ad0cca562463..72e509bc975b 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -23,14 +23,18 @@ properties:
           - fsl,imx93-lcdif
       - items:
           - enum:
-              - fsl,imx6sl-lcdif
-              - fsl,imx6sll-lcdif
               - fsl,imx6ul-lcdif
               - fsl,imx7d-lcdif
               - fsl,imx8mm-lcdif
               - fsl,imx8mn-lcdif
               - fsl,imx8mq-lcdif
           - const: fsl,imx6sx-lcdif
+      - items:
+          - enum:
+              - fsl,imx6sl-lcdif
+              - fsl,imx6sll-lcdif
+          - const: fsl,imx6sx-lcdif
+          - const: fsl,imx28-lcdif
       - items:
           - enum:
               - fsl,imx6sx-lcdif
-- 
2.34.1