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Date: Fri, 22 Sep 2017 10:59:58 +0800
From: Sandy Huang <hjc@...k-chips.com>
To: Rob Herring <robh@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Heiko Stuebner <heiko@...ech.de>,
David Airlie <airlied@...ux.ie>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
dri-devel <dri-devel@...ts.freedesktop.org>,
"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Mark Yao <mark.yao@...k-chips.com>
Subject: Re: [PATCH 1/3] dt-bindings: Add document for rockchip RGB output
interface
Hi rob,
在 2017/9/22 3:40, Rob Herring 写道:
> On Tue, Sep 19, 2017 at 9:57 PM, Sandy Huang <hjc@...k-chips.com> wrote:
>>
>>
>> 在 2017/9/20 9:51, Sandy Huang 写道:
>>>
>>> Hi rob,
>>> thanks for you review.
>>>
>>> 在 2017/9/19 22:46, Rob Herring 写道:
>>>>
>>>> On Thu, Sep 14, 2017 at 11:43:18AM +0800, Sandy Huang wrote:
>>>>>
>>>>> This path add support rv1108 rgb output interface driver.
>>>>>
>>>>> Signed-off-by: Sandy Huang <hjc@...k-chips.com>
>>>>> ---
>>>>> .../bindings/display/rockchip/rockchip-rgb.txt | 80
>>>>> ++++++++++++++++++++++
>>>>> 1 file changed, 80 insertions(+)
>>>>> create mode 100644
>>>>> Documentation/devicetree/bindings/display/rockchip/rockchip-rgb.txt
>>>>>
>>>>> diff --git
>>>>> a/Documentation/devicetree/bindings/display/rockchip/rockchip-rgb.txt
>>>>> b/Documentation/devicetree/bindings/display/rockchip/rockchip-rgb.txt
>>>>> new file mode 100644
>>>>> index 0000000..4164512
>>>>> --- /dev/null
>>>>> +++
>>>>> b/Documentation/devicetree/bindings/display/rockchip/rockchip-rgb.txt
>>>>> @@ -0,0 +1,80 @@
>>>>> +Rockchip RV1108 RGB interface
>>>>> +================================
>>>>> +
>>>>> +Required properties:
>>>>> +- compatible: matching the soc type:
>>>>> + - "rockchip,rv1108-rgb";
>>>>> +
>>>>> +Optional properties:
>>>>> +- pinctrl-names: must contain a "lcdc" entry.
>>>>> +- pinctrl-0: pin control group to be used for this interface.
>>>>> +
>>>>> +Required nodes:
>>>>> +- rockchip,rgb-mode: should be "p888", "p666", "p565", "s888",
>>>>> "s888-dummy"
>>>>
>>>>
>>>> This should be a standard property. Any device with a parallel interface
>>>> is going to need something like this.
>>>>
>>> so, i need to move this property to panel? or just rename
>>> rockchip,rgb-mode to rgb-mode?
>>>
>>>>> + - p888: output r8-g8-b8 at each dclk cycle for per-pixel
>>>>> + - p666: output r6-g6-b6 at each dclk cycle for per-pixel
>>>>> + - p565: output r5-g6-b5 at each dclk cycle for per-pixel
>>>>> + - s888: output r8-g8-b8 in three dclk cycle for per-pixel
>>>>> + - s888-dmmy: output r8-g8-b8-dummy in four dclk cycle for per-pixel
>>>>> +
>>>>> +The rgb has two video ports described by:
>>>>> + Documentation/devicetree/bindings/media/video-interfaces.txt
>>>>> +Their connections are modeled using the OF graph bindings specified in
>>>>> + Documentation/devicetree/bindings/graph.txt.
>>>>> +
>>>>> +- video port 0 for the VOP input, the remote endpoint maybe
>>>>> vopb/vopl/vop
>>>>> +- video port 1 for either a panel or subsequent encoder
>>>>> +
>>>>> +the panel described by:
>>>>> + Documentation/devicetree/bindings/display/panel/simple-panel.txt
>>>>> +Panel other required properties:
>>>>> +- ports for remote rgb output.
>>>>> +
>>>>> +Example:
>>>>> +
>>>>> +panel: panel {
>>>>> + compatible = "auo,b101ean01";
>>>>> + enable-gpios = <&gpio7 21 GPIO_ACTIVE_HIGH>;
>>>>> +
>>>>> + ports {
>>>>> + panel_in_rgb: endpoint {
>>>>> + remote-endpoint = <&rgb_out_panel>;
>>>>> + };
>>>>> + };
>>>>> +};
>>>>> +
>>>>> +For Rockchip RV1108:
>>>>> +
>>>>> + rgb: rgb {
>>>>> + compatible = "rockchip,rv1108-rgb";
>>>>> + pinctrl-names = "lcdc";
>>>>> + pinctrl-0 = <&lcdc_ctl>;
>>>>> + rockchip,rgb-mode = "p888";
>>>>> +
>>>>> + ports {
>>>>> + #address-cells = <1>;
>>>>> + #size-cells = <0>;
>>>>> +
>>>>> + rgb_in: port@0 {
>>>>> + reg = <0>;
>>>>> + #address-cells = <1>;
>>>>> + #size-cells = <0>;
>>>>> +
>>>>> + rgb_in_vop: endpoint@0 {
>>>>> + reg = <0>;
>>>>
>>>>
>>>> Don't need reg for a single endpoint.
>>>>
>>> ok, this will be deleted at next version.
>>>>>
>>>>> + remote-endpoint = <&vop_out_rgb>;
>>>>> + };
>>>>> + };
>>>>> +
>>>>> + rgb_out: port@1 {
>>>>> + reg = <1>;
>>>>> + #address-cells = <1>;
>>>>> + #size-cells = <0>;
>>>>> +
>>>>> + rgb_out_panel: endpoint@0 {
>>>>> + reg = <0>;
>>>>
>>>>
>>>> ditto.
>>>>
>>> ok, this will be deleted at next version.
>>
>> sorry,this can't be deleted, because rgb output remote endpoint maybe panel
>> or convert chip, the dts node maybe like this:
>>
>> panel: panel {
>> status = "disabled";
>> ports {
>> panel_in_rgb: endpoint {
>> remote-endpoint = <&rgb_out_panel>;
>> };
>> };
>> };
>>
>> bridge: bridge {
>> status = "okay";
>> ports {
>> bridge_in_rgb: endpoint {
>> remote-endpoint = <&rgb_out_bridge>;
>> };
>> };
>> };
>>
>> rgb_out: port@1 {
>> reg = <1>;
>> #address-cells = <1>;
>> #size-cells = <0>;
>> rgb_out_panel: endpoint@0 {
>> reg = <0>;
>> remote-endpoint = <&panel_in_rgb>;
>> };
>> rgb_out_bridge: endpoint@1 {
>> reg = <1>;
>> remote-endpoint = <&bridge_in_rgb>;
>> };
>> };
>>
>> so rockchip_rgb_bind() @ rockchip_rgb.c use reg id to find the remote
>> actived endpoint.
>>
>> for_each_child_of_node(port, endpoint) {
>> of_property_read_u32(endpoint, "reg", &endpoint_id);
>
> Lack of reg property here should imply 0 for endpoint_id.
>
ok, i will delete this reg id and set the endpoint_id default value to 0
when lack of reg property at next version, thanks.
>> ret = drm_of_find_panel_or_bridge(dev->of_node, 1, endpoint_id,
>> &rgb->panel, &rgb->bridge);
>> if (!ret)
>> break;
>> }
>>
>>>>> + remote-endpoint = <&panel_in_rgb>;
>>>>> + };
>>>>> + };
>>>>> + };
>>>>> + };
>>>>> --
>>>>> 2.7.4
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> _______________________________________________
>>> Linux-rockchip mailing list
>>> Linux-rockchip@...ts.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>>
>>
>
>
>
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