Hi, On Tue, Dec 10, 2019 at 04:36:30PM +0800, Kevin Tang wrote: > From: Kevin Tang <kevin.tang@xxxxxxxxxx> > > DPU (Display Processor Unit) is the Display Controller for the Unisoc SoCs > which transfers the image data from a video memory buffer to an internal > LCD interface. > > Cc: Orson Zhai <orsonzhai@xxxxxxxxx> > Cc: Baolin Wang <baolin.wang@xxxxxxxxxx> > Cc: Chunyan Zhang <zhang.lyra@xxxxxxxxx> > Signed-off-by: Kevin Tang <kevin.tang@xxxxxxxxxx> > --- > .../devicetree/bindings/display/sprd/dpu.txt | 55 ++++++++++++++++++++++ > 1 file changed, 55 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/sprd/dpu.txt > > diff --git a/Documentation/devicetree/bindings/display/sprd/dpu.txt b/Documentation/devicetree/bindings/display/sprd/dpu.txt > new file mode 100644 > index 0000000..25cbf8e > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/sprd/dpu.txt > @@ -0,0 +1,55 @@ > +Unisoc SoC Display Processor Unit (DPU) > +============================================================================ > + > +DPU (Display Processor Unit) is the Display Controller for the Unisoc SoCs > +which transfers the image data from a video memory buffer to an internal > +LCD interface. > + > +Required properties: > + - compatible: value should be "sprd,display-processor"; > + - reg: physical base address and length of the DPU registers set. > + - interrupts: the interrupt signal from DPU. > + - clocks: must include clock specifiers corresponding to entries in the > + clock-names property. > + - clock-names: list of clock names sorted in the same order as the clocks > + property. Same story, this should be a YAML schemas, but here you should describe what the expected clock-names are, and what clock they represent. > + - dma-coherent: with this property, the dpu driver can allocate large and > + continuous memorys. > + - port: a port node with endpoint definitions as defined in document [1]. So only one? Connected to what? Maxime
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