[PATCH v4] dt-bindings: mxsfb: Document i.MX8M/i.MX6SX/i.MX6SL power-domains property

[Marek Vasut]

The power-domains property is mandatory on i.MX8M Mini, Nano, Plus
and i.MX6SX, i.MX6SL. Document the property and mark it as required
on the aforementioned variants of the IP, present in those SoCs.

Signed-off-by: Marek Vasut <marex at denx.de>
---
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Liu Ying <victor.liu at nxp.com>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: linux-arm-kernel at lists.infradead.org
To: devicetree at vger.kernel.org
---
V2: - Add AB from Krzysztof
    - Add mx6sx power domain into the list
V3: - Update commit message
    - Add i.MX6SL
    - Update example
V4: - Drop ack from Krzysztof
    - Rebase on next 20221213 instead of previous 20221208, which now
      contains power-domains: part of this patch
---
 .../devicetree/bindings/display/fsl,lcdif.yaml     | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
index f449cfc767899..fd5aab93dd103 100644
--- a/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
+++ b/Documentation/devicetree/bindings/display/fsl,lcdif.yaml
@@ -114,6 +114,19 @@ allOf:
           maxItems: 1
         clock-names:
           maxItems: 1
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - fsl,imx6sl-lcdif
+              - fsl,imx6sx-lcdif
+              - fsl,imx8mm-lcdif
+              - fsl,imx8mn-lcdif
+              - fsl,imx8mp-lcdif
+    then:
+      required:
+        - power-domains
 
 examples:
   - |
@@ -128,6 +141,7 @@ examples:
                  <&clks IMX6SX_CLK_LCDIF_APB>,
                  <&clks IMX6SX_CLK_DISPLAY_AXI>;
         clock-names = "pix", "axi", "disp_axi";
+        power-domains = <&pd_disp>;
 
         port {
             endpoint {
-- 
2.35.1