Update the gpio-backlight binding to support configurations that require
more than one GPIO for enabling/disabling the backlight.
Signed-off-by: Sudarshan Shetty <redacted>
---
.../leds/backlight/gpio-backlight.yaml | 24 +++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
index 584030b6b0b9..4e4a856cbcd7 100644
--- a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
+++ b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml
@@ -16,8 +16,18 @@ properties:
const: gpio-backlight
gpios:
- description: The gpio that is used for enabling/disabling the backlight.
- maxItems: 1
+ description: |
+ The gpio that is used for enabling/disabling the backlight.
+ Multiple GPIOs can be specified for panels that require several
+ enable signals. All GPIOs are controlled together.
+ type: array
+ minItems: 1
+ items:
+ type: array
+ minItems: 3
+ maxItems: 3
+ items:
+ type: integer
default-on:
description: enable the backlight at boot.@@ -38,4 +48,14 @@ examples:
default-on;
};
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ backlight {
+ compatible = "gpio-backlight";
+ gpios = <&gpio3 4 GPIO_ACTIVE_HIGH>,
+ <&gpio3 5 GPIO_ACTIVE_HIGH>,
+ <&gpio3 6 GPIO_ACTIVE_HIGH>;
+ default-on;
+ };
+
...--
2.34.1