From: Yannick Fertre <yannick.fertre@xxxxxxxxxxx> Add documentation for new default-brightness-level property. Signed-off-by: Yannick Fertre <yannick.fertre@xxxxxxxxxxx> Signed-off-by: Alexandru Ardelean <alex@xxxxxxxxxxx> --- Link to original patch: https://github.com/STMicroelectronics/linux/commit/c4067d7bd883c6fa14ffd49892c4ce663cdafe98 Changelog v1 -> v2: * https://lore.kernel.org/dri-devel/20230519200520.10657-2-alex@xxxxxxxxxxx/ * removed 'brightness-levels' reference * updated doc-text for 'default-brightness-level' * updated doc-text for 'default-on' * added 'minimum' & 'maximum' to 'default-brightness-level' property * removed 'Reviewed-by: Philippe CORNU <philippe.cornu@xxxxxxxxxxx>' as requested * patch is first in series of 2 patches (was second patch) .../bindings/leds/backlight/gpio-backlight.yaml | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml index 584030b6b0b9..2da6552a207c 100644 --- a/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml +++ b/Documentation/devicetree/bindings/leds/backlight/gpio-backlight.yaml @@ -20,9 +20,21 @@ properties: maxItems: 1 default-on: - description: enable the backlight at boot. + description: + The default power state of the backlight at boot. type: boolean + default-brightness-level: + description: + The default brightness level on device init. The value can be 0 or 1. + If omitted, the value is 1. In the context of the "gpio-backlight" driver + the effect of this setting will be that the backlight is on/off. + The difference between this setting and "default-on" is that this handles + brightness, while "default-on" handles the power setting of the device. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 0 + maximum: 1 + required: - compatible - gpios -- 2.40.1
