[PATCH 1/2] dt-bindings: pwm-backlight: Add 'max-brightness' property

[Matthias Kaehlcke]

Add an optional 'max-brightness' property, which is used to specify
the number of brightness levels (max-brightness + 1) when the node
has no 'brightness-levels' table.

Signed-off-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>
---
 .../devicetree/bindings/leds/backlight/pwm-backlight.txt       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
index 64fa2fbd98c9..98f4ba626054 100644
--- a/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
+++ b/Documentation/devicetree/bindings/leds/backlight/pwm-backlight.txt
@@ -27,6 +27,9 @@ Optional properties:
                             resolution pwm duty cycle can be used without
                             having to list out every possible value in the
                             brightness-level array.
+  - max-brightness: Maximum brightness value. Used to specify the number of
+                    brightness levels (max-brightness + 1) when the node
+                    has no 'brightness-levels' table.
 
 [0]: Documentation/devicetree/bindings/pwm/pwm.txt
 [1]: Documentation/devicetree/bindings/gpio/gpio.txt
-- 
2.22.0.rc2.383.gf4fbbf30c2-goog