[PATCH v2 2/3] dt-bindings: lcdif: Expand the imx6sl/imx6sll fallbacks

[Fabio Estevam <festevam@gmail.com>]

From: Fabio Estevam <festevam@denx.de>

imx6sl.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@denx.de>
---
Changes since v1:
- Newly introduced.

 .../devicetree/bindings/display/fsl,lcdif.yaml     | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index 836955de3bc9..08ce19638fbd 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -32,11 +32,23 @@ properties:
               - fsl,imx8mn-lcdif
               - fsl,imx8mq-lcdif
           - const: fsl,imx6sx-lcdif
+      - items:
+          - const: fsl,imx6sl-lcdif
+          - const: fsl,imx6sx-lcdif
+          - const: fsl,imx28-lcdif
+      - items:
+          - const: fsl,imx6sll-lcdif
+          - const: fsl,imx6sx-lcdif
+          - const: fsl,imx28-lcdif
+      - items:
+          - enum:
+              - fsl,imx6sl-lcdif
+              - fsl,imx6sll-lcdif
+          - const: fsl,imx28-lcdif
       - items:
           - enum:
               - fsl,imx6sx-lcdif
           - const: fsl,imx28-lcdif
-
   reg:
     maxItems: 1
 
-- 
2.34.1