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Message-ID: <20181224120049.GD22341@e110455-lin.cambridge.arm.com>
Date: Mon, 24 Dec 2018 12:00:49 +0000
From: Liviu Dudau <Liviu.Dudau@....com>
To: "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Cc: "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
Brian Starkey <Brian.Starkey@....com>,
"Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
"thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@....com>,
"Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
Ayan Halder <Ayan.Halder@....com>,
"Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
"Jin Gao (Arm Technology China)" <Jin.Gao@....com>,
"Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
nd <nd@....com>, "malidp@...s.arm.com" <malidp@...s.arm.com>,
"maarten.lankhorst@...ux.intel.com"
<maarten.lankhorst@...ux.intel.com>,
"maxime.ripard@...tlin.com" <maxime.ripard@...tlin.com>,
"sean@...rly.run" <sean@...rly.run>,
"corbet@....net" <corbet@....net>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
"rdunlap@...radead.org" <rdunlap@...radead.org>,
"mchehab+samsung@...nel.org" <mchehab+samsung@...nel.org>,
"davem@...emloft.net" <davem@...emloft.net>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
"nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>,
"arnd@...db.de" <arnd@...db.de>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
Mark Rutland <Mark.Rutland@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"airlied@...ux.ie" <airlied@...ux.ie>,
"yamada.masahiro@...ionext.com" <yamada.masahiro@...ionext.com>
Subject: Re: [PATCH v3 2/9] dt/bindings: drm/komeda: Add DT bindings for ARM
display processor D71
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@....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@...000 {
> + #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.
> +
> + 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.
> +
> + port@0 {
> + dp0_pipe1_out: endpoint {
> + remote-endpoint = <&db_dvi1_in>;
> + };
> + };
> + };
> + };
> + ...
> +};
> --
> 2.17.1
>
With these changes:
Reviewed-by: Liviu Dudau <liviu.dudau@....com>
Best regards,
Liviu
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
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