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Message-ID: <ab437e190dc3f7e1f63b927f16dea2d5f806d59c.camel@toradex.com>
Date: Tue, 23 Mar 2021 00:34:28 +0000
From: Marcel Ziswiler <marcel.ziswiler@...adex.com>
To: "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"victor.liu@....com" <victor.liu@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>
CC: "narmstrong@...libre.com" <narmstrong@...libre.com>,
"linux-imx@....com" <linux-imx@....com>,
"robert.foss@...aro.org" <robert.foss@...aro.org>,
"Laurent.pinchart@...asonboard.com"
<Laurent.pinchart@...asonboard.com>,
"mchehab@...nel.org" <mchehab@...nel.org>,
"daniel@...ll.ch" <daniel@...ll.ch>,
"shawnguo@...nel.org" <shawnguo@...nel.org>,
"vkoul@...nel.org" <vkoul@...nel.org>,
"kernel@...gutronix.de" <kernel@...gutronix.de>,
"s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
"a.hajda@...sung.com" <a.hajda@...sung.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"jonas@...boo.se" <jonas@...boo.se>,
"kishon@...com" <kishon@...com>,
"airlied@...ux.ie" <airlied@...ux.ie>,
"festevam@...il.com" <festevam@...il.com>,
"lee.jones@...aro.org" <lee.jones@...aro.org>,
"jernej.skrabec@...l.net" <jernej.skrabec@...l.net>
Subject: Re: [PATCH v6 03/14] dt-bindings: display: bridge: Add i.MX8qm/qxp
pixel combiner binding
On Wed, 2021-03-17 at 11:42 +0800, Liu Ying wrote:
> This patch adds bindings for i.MX8qm/qxp pixel combiner.
>
> Reviewed-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Liu Ying <victor.liu@....com>
> ---
> v5->v6:
> * No change.
>
> v4->v5:
> * No change.
>
> v3->v4:
> * No change.
>
> v2->v3:
> * Add Rob's R-b tag.
>
> v1->v2:
> * Use graph schema. (Laurent)
> * Use enum instead of oneOf + const for the reg property of pixel combiner
> channels. (Rob)
>
> .../display/bridge/fsl,imx8qxp-pixel-combiner.yaml | 144 +++++++++++++++++++++
> 1 file changed, 144 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
> b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
> new file mode 100644
> index 00000000..50bae21
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
> @@ -0,0 +1,144 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/bridge/fsl,imx8qxp-pixel-combiner.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale i.MX8qm/qxp Pixel Combiner
> +
> +maintainers:
> + - Liu Ying <victor.liu@....com>
> +
> +description: |
> + The Freescale i.MX8qm/qxp Pixel Combiner takes two output streams from a
> + single display controller and manipulates the two streams to support a number
> + of modes(bypass, pixel combine, YUV444 to YUV422, split_RGB) configured as
> + either one screen, two screens, or virtual screens. The pixel combiner is
> + also responsible for generating some of the control signals for the pixel link
> + output channel.
> +
> +properties:
> + compatible:
> + enum:
> + - fsl,imx8qm-pixel-combiner
> + - fsl,imx8qxp-pixel-combiner
> +
> + "#address-cells":
> + const: 1
> +
> + "#size-cells":
> + const: 0
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-names:
> + const: apb
> +
> + power-domains:
> + maxItems: 1
> +
> +patternProperties:
> + "^channel@[0-1]$":
> + type: object
> + description: Represents a display stream of pixel combiner.
> +
> + properties:
> + "#address-cells":
> + const: 1
> +
> + "#size-cells":
> + const: 0
> +
> + reg:
> + description: The display stream index.
> + enum: [ 0, 1 ]
> +
> + port@0:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: Input endpoint of the display stream.
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/properties/port
> + description: Output endpoint of the display stream.
> +
> + required:
> + - "#address-cells"
> + - "#size-cells"
> + - reg
> + - port@0
> + - port@1
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - "#address-cells"
> + - "#size-cells"
> + - reg
> + - clocks
> + - clock-names
> + - power-domains
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8-lpcg.h>
> + #include <dt-bindings/firmware/imx/rsrc.h>
> + pixel-combiner@...20000 {
> + compatible = "fsl,imx8qxp-pixel-combiner";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x56020000 0x10000>;
> + clocks = <&dc0_pixel_combiner_lpcg IMX_LPCG_CLK_4>;
> + clock-names = "apb";
> + power-domains = <&pd IMX_SC_R_DC_0>;
> +
> + channel@0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0>;
> +
> + port@0 {
> + reg = <0>;
> +
> + dc0_pixel_combiner_ch0_dc0_dpu_disp0: endpoint {
> + remote-endpoint = <&dc0_dpu_disp0_dc0_pixel_combiner_ch0>;
While I acknowledge this just being an example you seem to call these as follows elsewhere:
Documentation/devicetree/bindings/display/bridge/fsl,imx8qxp-pixel-combiner.yaml
dc0_dpu_disp0_dc0_pixel_combiner_ch0
pixel_combiner0_ch0_dpu0_disp0
Or am I just missing something?
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + dc0_pixel_combiner_ch0_dc0_pixel_link0: endpoint {
> + remote-endpoint = <&dc0_pixel_link0_dc0_pixel_combiner_ch0>;
> + };
> + };
> + };
> +
> + channel@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <1>;
> +
> + port@0 {
> + reg = <0>;
> +
> + dc0_pixel_combiner_ch1_dc0_dpu_disp1: endpoint {
> + remote-endpoint = <&dc0_dpu_disp1_dc0_pixel_combiner_ch1>;
ditto
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> +
> + dc0_pixel_combiner_ch1_dc0_pixel_link1: endpoint {
> + remote-endpoint = <&dc0_pixel_link1_dc0_pixel_combiner_ch1>;
do.
> + };
> + };
> + };
> + };
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