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SubjectRe: [PATCH RFC v7 1/6] dt-bindings: display: add Unisoc's drm master bindings
On Mon, Sep 28, 2020 at 3:17 AM Maxime Ripard <maxime@cerno.tech> wrote:
>
> Hi!
>
> On Mon, Sep 28, 2020 at 02:27:35PM +0800, Kevin Tang wrote:
> > From: Kevin Tang <kevin.tang@unisoc.com>
> >
> > The Unisoc DRM master device is a virtual device needed to list all
> > DPU devices or other display interface nodes that comprise the
> > graphics subsystem
> >
> > RFC v7:
> > - Fix DTC unit name warnings
> > - Fix the problem of maintainers
> >
> > Cc: Orson Zhai <orsonzhai@gmail.com>
> > Cc: Chunyan Zhang <zhang.lyra@gmail.com>
> > Signed-off-by: Kevin Tang <kevin.tang@unisoc.com>
> > ---
> > .../display/sprd/sprd,display-subsystem.yaml | 39 ++++++++++++++++++++++
> > 1 file changed, 39 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> > new file mode 100644
> > index 0000000..9487a39
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/sprd/sprd,display-subsystem.yaml
> > @@ -0,0 +1,39 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/sprd/sprd,display-subsystem.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Unisoc DRM master device
> > +
> > +maintainers:
> > + - Kevin Tang <kevin.tang@unisoc.com>
> > +
> > +description: |
> > + The Unisoc DRM master device is a virtual device needed to list all
> > + DPU devices or other display interface nodes that comprise the
> > + graphics subsystem.
> > +
> > +properties:
> > + compatible:
> > + const: sprd,display-subsystem
> > +
> > + ports:
> > + $ref: /schemas/types.yaml#/definitions/phandle-array
> > + description:
> > + Should contain a list of phandles pointing to display interface port
> > + of DPU devices.
>
> Generally speaking, driver-specific properties should be prefixed by the
> vendor name to avoid any conflict with generic properties (like the
> OF-Graph ports subnode in this case)

We try to avoid this virtual node altogether which I commented about
on v6 which was ignored.

Rob

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