Hi Rob, On Tue, Nov 28, 2017 at 11:48:47AM -0600, Rob Herring wrote: > Please CC DT list. > > On Mon, Nov 27, 2017 at 9:41 AM, Maxime Ripard > <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote: > > The power-supply property is used by a vast majority of panels, including > > panel-simple. Let's document it as a common property > > > > Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> > > --- > > Documentation/devicetree/bindings/display/panel/panel-common.txt | 6 ++++++ > > Documentation/devicetree/bindings/display/panel/panel-lvds.txt | 1 + > > 2 files changed, 7 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.txt b/Documentation/devicetree/bindings/display/panel/panel-common.txt > > index ec52c472c845..125ea68052af 100644 > > --- a/Documentation/devicetree/bindings/display/panel/panel-common.txt > > +++ b/Documentation/devicetree/bindings/display/panel/panel-common.txt > > @@ -78,6 +78,12 @@ used for panels that implement compatible control signals. > > while active. Active high reset signals can be supported by inverting the > > GPIO specifier polarity flag. > > > > +Power > > +----- > > + > > +- power-supply: many display panels need an additional power supply in > > + order to be fully powered-up. For such panels, power-supply contains > > + a phandle to the regulator powering the panel. > > > > Backlight > > --------- > > diff --git a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt > > index b938269f841e..250850a2150b 100644 > > --- a/Documentation/devicetree/bindings/display/panel/panel-lvds.txt > > +++ b/Documentation/devicetree/bindings/display/panel/panel-lvds.txt > > @@ -32,6 +32,7 @@ Optional properties: > > - label: See panel-common.txt. > > - gpios: See panel-common.txt. > > - backlight: See panel-common.txt. > > +- power-supply: See panel-common.txt. > > simple-panel.txt should do the same. I'll make simple-panel do that then > Really, I'd like to see panel-common.txt and simple-panel.txt merged > and simple-panel.txt removed altogether. But there are a lot of > references back to simple-panel.txt. A given panel still needs to say > what common properties it uses or doesn't use. Omitting a property > like power-supply is ambiguous and can either mean "I only have 1 > supply" or "I haven't thought about supplies yet there are more than > 1". While I agree with you here, and in general, power-supply should be mandatory, do you expect me to fix all the panel bindings as part of this serie? Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
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