Re: [PATCH v3 2/9] dt/bindings: drm/komeda: Add DT bindings for ARM display processor D71

["james qian wang (Arm Technology China)" <james.qian.wang@arm.com>]

On Mon, Dec 24, 2018 at 08:00:51PM +0800, Liviu Dudau wrote:
> On Fri, Dec 21, 2018 at 09:59:12AM +0000, james qian wang (Arm Technology China) wrote:
> > Add DT bindings documentation for the ARM display processor D71 and later
> > IPs.
> > 
> > Signed-off-by: James (Qian) Wang <james.qian.wang@arm.com>
> > 
> > Changes in v3:
> > - Deleted unnecessary property: interrupt-names.
> > - Dropped 'ports' and moving 'port' up a level.
> > ---
> >  .../bindings/display/arm/arm,komeda.txt       | 79 +++++++++++++++++++
> >  1 file changed, 79 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/display/arm/arm,komeda.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/display/arm/arm,komeda.txt b/Documentation/devicetree/bindings/display/arm/arm,komeda.txt
> > new file mode 100644
> > index 000000000000..b4e450243c7d
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/arm/arm,komeda.txt
> > @@ -0,0 +1,79 @@
> > +Device Tree bindings for ARM Komeda display driver
> > +
> > +Required properties:
> > +- compatible: Should be "arm,mali-d71"
> > +- reg: Physical base address and length of the registers in the system
> > +- interrupts: the interrupt line number of the device in the system
> > +- clocks: A list of phandle + clock-specifier pairs, one for each entry
> > +    in 'clock-names'
> > +- clock-names: A list of clock names. It should contain:
> > +      - "mclk": for the main processor clock
> > +      - "pclk": for the APB interface clock
> > +- #address-cells: Must be 1
> > +- #size-cells: Must be 0
> > +
> > +Required properties for sub-node: pipeline@nq
> > +Each device contains one or two pipeline sub-nodes (at least one), each
> > +pipeline node should provide properties:
> > +- reg: Zero-indexed identifier for the pipeline
> > +- clocks: A list of phandle + clock-specifier pairs, one for each entry
> > +    in 'clock-names'
> > +- clock-names: should contain:
> > +      - "pxclk": pixel clock
> > +      - "aclk": AXI interface clock
> > +
> > +- port: each pipeline connect to an encoder input port. The connection is
> > +    modeled using the OF graph bindings specified in
> > +    Documentation/devicetree/bindings/graph.txt
> > +
> > +Optional properties:
> > +  - memory-region: phandle to a node describing memory (see
> > +    Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt)
> > +    to be used for the framebuffer; if not present, the framebuffer may
> > +    be located anywhere in memory.
> > +
> > +Example:
> > +/ {
> > +	...
> > +
> > +	dp0: display@c00000 {
> > +		#address-cells = <1>;
> > +		#size-cells = <0>;
> > +		compatible = "arm,mali-d71";
> > +		reg = <0xc00000 0x20000>;
> > +		interrupts = <0 168 4>;
> > +		clocks = <&dpu_mclk>, <&dpu_aclk>;
> > +		clock-names = "mclk", "pclk";
> > +
> > +		dp0_pipe0: pipeline@0 {
> > +			clocks = <&fpgaosc2>, <&dpu_aclk>;
> > +			clock-names = "pxclk", "aclk";
> > +			reg = <0>;
> > +
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> 
> These are undocumented and not necessary anyway, as the pipelines will
> inherit display's attributes.

thank you, will fix it in the next version.

> > +
> > +			port@0 {
> > +				dp0_pipe0_out: endpoint {
> > +					remote-endpoint = <&db_dvi0_in>;
> > +				};
> > +			};
> > +		};
> > +
> > +		dp0_pipe1: pipeline@1 {
> > +			clocks = <&fpgaosc2>, <&dpu_aclk>;
> > +			clock-names = "pxclk", "aclk";
> > +			reg = <1>;
> > +
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> 
> same here.

OK.

> 
> > +
> > +			port@0 {
> > +				dp0_pipe1_out: endpoint {
> > +					remote-endpoint = <&db_dvi1_in>;
> > +				};
> > +			};
> > +		};
> > +	};
> > +	...
> > +};
> > -- 
> > 2.17.1
> > 
> 
> With these changes:
> 
> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
> 
> Best regards,
> Liviu
> 
> 
> -- 
> ====================
> | I would like to |
> | fix the world,  |
> | but they're not |
> | giving me the   |
>  \ source code!  /
>   ---------------
>     ¯\_(ツ)_/¯