Hi Jyri, Rob, Paul, Miquel. Following patch is now applied to drm-misc-next. Please add your simple panels to this file so we avoid independent bindings files for ecah panel. I will handle the inevitable conflicts when I apply. Sam On Thu, Jan 02, 2020 at 11:17:11AM +0100, Sam Ravnborg wrote: > There is an increasing number of new simple panels. > Common for many of these simple panels are that they have one > mandatory power-supply and some of them have backlight and / or > an enable gpio. > > The binding file to describe these panels adds overhead > that really do not add value. > The binding are known and there is nothing gained from a > dedicated binding file nor for any dedicated example. > > The following patch introduces a single panel-simple.yaml > and converts two ampire bindings over to the new file. > > The conversion - if applied will have following effects: > > - The maintainer for the individual file will change > There is no need for many different maintainers for a simple binding. > We have the same situation with the panel-simple driver in the kernel. > > - The license will change to (GPL-2.0-only OR BSD-2-Clause) > There is usually only a single line copied from the original > file, a line that is often copied from a datasheet. > This license change should be acceptable considered what little > is copied. > If the license change is not OK we can use a dedicated binding > file in these cases. > > This is a follow-up on Rob's big patch converting a lot of panel bindings > to individual files: > > "dt-bindings: display: Convert a bunch of panels to DT schema" > https://patchwork.ozlabs.org/patch/1197683/ > > The objectives with one file for the relevant simple panels are: > - Make it simpler to add bindings for simple panels > - Keep the number of bindings file lower and thus easier to find a > relevant file to copy from when adding new panels. > - Keep the binding documentation for simple panels more consistent > - Make it simpler to add support for new panels > > v2: > - spelling fixes (imirkin via irc, Rob) > - updated description (Rob) > - list properires in alphabetical order > - added power-supply to example (Rob) > - updated title > - reworded changelog a little > > Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx> > Cc: Thierry Reding <thierry.reding@xxxxxxxxx> > Cc: Rob Herring <robh@xxxxxxxxxx> > Cc: Maxime Ripard <mripard@xxxxxxxxxx> > Cc: Yannick Fertre <yannick.fertre@xxxxxx> > Cc: Mark Rutland <mark.rutland@xxxxxxx> > Cc: Daniel Vetter <daniel@xxxxxxxx> > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > Cc: devicetree@xxxxxxxxxxxxxxx > --- > .../panel/ampire,am-480272h3tmqw-t01h.yaml | 42 ------------- > .../panel/ampire,am800480r3tmqwa1h.txt | 7 --- > .../bindings/display/panel/panel-simple.yaml | 59 +++++++++++++++++++ > 3 files changed, 59 insertions(+), 49 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/display/panel/ampire,am-480272h3tmqw-t01h.yaml > delete mode 100644 Documentation/devicetree/bindings/display/panel/ampire,am800480r3tmqwa1h.txt > create mode 100644 Documentation/devicetree/bindings/display/panel/panel-simple.yaml > > diff --git a/Documentation/devicetree/bindings/display/panel/ampire,am-480272h3tmqw-t01h.yaml b/Documentation/devicetree/bindings/display/panel/ampire,am-480272h3tmqw-t01h.yaml > deleted file mode 100644 > index c6e33e7f36d0..000000000000 > --- a/Documentation/devicetree/bindings/display/panel/ampire,am-480272h3tmqw-t01h.yaml > +++ /dev/null > @@ -1,42 +0,0 @@ > -# SPDX-License-Identifier: GPL-2.0 > -%YAML 1.2 > ---- > -$id: http://devicetree.org/schemas/display/panel/ampire,am-480272h3tmqw-t01h.yaml# > -$schema: http://devicetree.org/meta-schemas/core.yaml# > - > -title: Ampire AM-480272H3TMQW-T01H 4.3" WQVGA TFT LCD panel > - > -maintainers: > - - Yannick Fertre <yannick.fertre@xxxxxx> > - - Thierry Reding <treding@xxxxxxxxxx> > - > -allOf: > - - $ref: panel-common.yaml# > - > -properties: > - compatible: > - const: ampire,am-480272h3tmqw-t01h > - > - power-supply: true > - enable-gpios: true > - backlight: true > - port: true > - > -required: > - - compatible > - > -additionalProperties: false > - > -examples: > - - | > - panel_rgb: panel { > - compatible = "ampire,am-480272h3tmqw-t01h"; > - enable-gpios = <&gpioa 8 1>; > - port { > - panel_in_rgb: endpoint { > - remote-endpoint = <&controller_out_rgb>; > - }; > - }; > - }; > - > -... > diff --git a/Documentation/devicetree/bindings/display/panel/ampire,am800480r3tmqwa1h.txt b/Documentation/devicetree/bindings/display/panel/ampire,am800480r3tmqwa1h.txt > deleted file mode 100644 > index 83e2cae1cc1b..000000000000 > --- a/Documentation/devicetree/bindings/display/panel/ampire,am800480r3tmqwa1h.txt > +++ /dev/null > @@ -1,7 +0,0 @@ > -Ampire AM-800480R3TMQW-A1H 7.0" WVGA TFT LCD panel > - > -Required properties: > -- compatible: should be "ampire,am800480r3tmqwa1h" > - > -This binding is compatible with the simple-panel binding, which is specified > -in simple-panel.txt in this directory. > diff --git a/Documentation/devicetree/bindings/display/panel/panel-simple.yaml b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml > new file mode 100644 > index 000000000000..51ca50201182 > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/panel/panel-simple.yaml > @@ -0,0 +1,59 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/panel/panel-simple.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Simple panels with one power supply > + > +maintainers: > + - Thierry Reding <thierry.reding@xxxxxxxxx> > + - Sam Ravnborg <sam@xxxxxxxxxxxx> > + > +description: | > + This binding file is a collection of the simple (dumb) panels that > + requires only a single power-supply. > + There are optionally a backlight and an enable GPIO. > + The panel may use an OF graph binding for the association to the display, > + or it may be a direct child node of the display. > + > + If the panel is more advanced a dedicated binding file is required. > + > +allOf: > + - $ref: panel-common.yaml# > + > +properties: > + > + compatible: > + enum: > + # compatible must be listed in alphabetical order, ordered by compatible. > + # The description in the comment is mandatory for each compatible. > + > + # Ampire AM-480272H3TMQW-T01H 4.3" WQVGA TFT LCD panel > + - ampire,am-480272h3tmqw-t01h > + # Ampire AM-800480R3TMQW-A1H 7.0" WVGA TFT LCD panel > + - ampire,am800480r3tmqwa1h > + > + backlight: true > + enable-gpios: true > + port: true > + power-supply: true > + > +additionalProperties: false > + > +required: > + - compatible > + - power-supply > + > +examples: > + - | > + panel_rgb: panel-rgb { > + compatible = "ampire,am-480272h3tmqw-t01h"; > + power-supply = <&vcc_lcd_reg>; > + > + port { > + panel_in_rgb: endpoint { > + remote-endpoint = <<dc_out_rgb>; > + }; > + }; > + }; > -- > 2.20.1
