* Stephen Warren wrote: > On 03/28/2012 08:33 AM, Thierry Reding wrote: > > This commit adds very basic support for device tree probing. Currently, > > only a PWM and a list of distinct brightness levels can be specified. > > Enabling or disabling backlight power via GPIOs is not yet supported. > > > > Signed-off-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx> > > > diff --git a/Documentation/devicetree/bindings/video/backlight/pwm-backlight b/Documentation/devicetree/bindings/video/backlight/pwm-backlight > > +Required properties: > > + - compatible: "pwm-backlight" > > + - pwms: OF device-tree PWM specification (see PWM binding[0]) > > + - num-brightness-levels: number of distinct brightness levels > > Do we need the "num-brightness-levels" property at all; it's just the > length of the brightness-levels property. No, we don't really need it. As you say, it can be derived from the property length. Thierry
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