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SubjectRe: [PATCH v4 4/4] dt-bindings: display: add i.MX6 MIPI DSI host controller doc
On Mon, Dec 02, 2019 at 09:33:59PM +0200, Adrian Ratiu wrote:
> This provides an example DT binding for the MIPI DSI host controller
> present on the i.MX6 SoC based on Synopsis DesignWare v1.01 IP.
>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Neil Armstrong <narmstrong@baylibre.com>
> Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.com>
> Signed-off-by: Martyn Welch <martyn.welch@collabora.com>
> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com>
> ---
> .../display/imx/fsl,mipi-dsi-imx6.yaml | 136 ++++++++++++++++++
> 1 file changed, 136 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml

Run 'make dt_binding_check' and fix the errors. See
Documentation/devicetree/writing-schema.rst.

>
> diff --git a/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml b/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml
> new file mode 100644
> index 000000000000..8c9603c28240
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/imx/fsl,mipi-dsi-imx6.yaml
> @@ -0,0 +1,136 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/fsl,mipi-dsi-imx6.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale i.MX6 DW MIPI DSI Host Controller
> +
> +description:
> + The DSI host controller is a Synopsys DesignWare MIPI DSI v1.01 IP with a companion PHY IP.
> +
> + These DT bindings follow the Synopsys DW MIPI DSI bindings defined in
> + Documentation/devicetree/bindings/display/bridge/dw_mipi_dsi.txt with
> + the following device-specific properties.
> +
> +properties:
> + compatible:
> + const: [ "fsl,imx6q-mipi-dsi", "snps,dw-mipi-dsi" ]

Not valid json-schema. You want 'items' with 2 'const' entries.
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: Module Clock
> + - description: DSI bus clock
> + minItems: 2
> + maxItems: 2

Don't need these. The min/max is implied by length of 'items'.

> +
> + clock-names:
> + items:
> + - const: pclk
> + - const: ref
> + minItems: 2
> + maxItems: 2
> +
> + fsl,gpr:
> + description: Phandle to the iomuxc-gpr region containing the multiplexer control register.
> + const: *gpr

Not a const. Should be a phandle type.

> +
> + ports:
> + type: object
> + description:
> + A node containing DSI input & output port nodes with endpoint
> + definitions as documented in
> + Documentation/devicetree/bindings/media/video-interfaces.txt
> + Documentation/devicetree/bindings/graph.txt
> + properties:
> + port@0:
> + type: object
> + description:
> + DSI input port node, connected to the ltdc rgb output port.
> +
> + port@1:
> + type: object
> + description:
> + DSI output port node, connected to a panel or a bridge input port"
> +
> +patternProperties:
> + "^(panel|panel-dsi)@[0-9]$":

DSI virtual channels are 0-3 only.

Do you really need both node names?

> + type: object
> + description:
> + A node containing the panel or bridge description as documented in
> + Documentation/devicetree/bindings/display/mipi-dsi-bus.txt
> + properties:
> + port:
> + type: object
> + description:
> + Panel or bridge port node, connected to the DSI output port (port@1)
> +
> + "#address-cells":
> + const: 1
> +
> + "#size-cells":
> + const: 0
> +
> +required:
> + - "#address-cells"
> + - "#size-cells"
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - ports
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + dsi: dsi@21e0000 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + compatible = "fsl,imx6q-mipi-dsi", "snps,dw-mipi-dsi";
> + reg = <0x021e0000 0x4000>;
> + interrupts = <0 102 IRQ_TYPE_LEVEL_HIGH>;
> + fsl,gpr = <&gpr>;
> + clocks = <&clks IMX6QDL_CLK_MIPI_CORE_CFG>,
> + <&clks IMX6QDL_CLK_MIPI_IPG>;
> + clock-names = "ref", "pclk";
> +
> + ports {
> + port@0 {
> + reg = <0>;
> + dsi_in: endpoint {
> + remote-endpoint = <&ltdc_ep1_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + dsi_out: endpoint {
> + remote-endpoint = <&panel_in>;
> + };
> + };
> + };
> +
> + panel@0 {
> + compatible = "sharp,ls032b3sx01";
> + reg = <0>;
> + reset-gpios = <&gpio6 8 GPIO_ACTIVE_LOW>;
> +
> + ports {
> + port@0 {
> + panel_in: endpoint {
> + remote-endpoint = <&dsi_out>;
> + };
> + };
> + };
> + };
> + };
> +
> +...
> --
> 2.24.0
>

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