While the signal on GPIO4 to drive the backlight controller indeed is
pulse width modulated its purpose is specifically to control the
brightness of a backlight.
Drop the #pwm-cells and instead expose a new property to configure the
granularity of the backlight PWM signal.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
.../devicetree/bindings/display/bridge/ti,sn65dsi86.yaml | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
index f8622bd0f61e..e380218b4646 100644
--- a/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/ti,sn65dsi86.yaml
@@ -66,9 +66,12 @@ properties:
1-based to match the datasheet. See ../../gpio/gpio.txt for more
information.
- '#pwm-cells':
- const: 1
- description: See ../../pwm/pwm.yaml for description of the cell formats.
+ ti,backlight-scale:
+ description:
+ The granularity of brightness for the PWM signal provided on GPIO4, if
+ this property is specified.
+ minimum: 0
+ maximum: 65535
ports:
type: object
--
2.28.0
