[PATCH v4 1/2] dt-bindings: backlight: rt4831: Add the new ocp level property

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From: ChiYuan Huang <cy_huang@xxxxxxxxxxx>

Add 'richtek,bled-ocp-microamp' property to make it chooseable.

The wrong backlight ocp level may affect the backlight channel output
current smaller than configured.

Signed-off-by: ChiYuan Huang <cy_huang@xxxxxxxxxxx>
Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
---
Since v3:
- Refine the description for backlight ocp property.
- Use the enum to list the supported value.

Since v2:
- Change the property name from 'richtek,bled-ocp-sel' to 'richtek,bled-ocp-microamp'.

---
 .../devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml
index e0ac686..99e9e13 100644
--- a/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml
+++ b/Documentation/devicetree/bindings/leds/backlight/richtek,rt4831-backlight.yaml
@@ -47,6 +47,11 @@ properties:
     minimum: 0
     maximum: 3
 
+  richtek,bled-ocp-microamp:
+    description: |
+      Backlight over current protection level.
+    enum: [900000, 1200000, 1500000, 1800000]
+
   richtek,channel-use:
     description: |
       Backlight LED channel to be used.
-- 
2.7.4




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