Re: [PATCH v2, 1/3] dt-bindings: display: mediatek: dsi: Convert dsi_dtbinding to .yaml

[AngeloGioacchino Del Regno]

Il 18/02/22 11:07, xinlei.lee@xxxxxxxxxxxx ha scritto:
> From: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
>
> Convert mediatek,dsi.txt to mediatek,dsi.yaml format
>
> Signed-off-by: Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
> ---
>   .../display/mediatek/mediatek,dsi.txt         | 62 --------------
>   .../display/mediatek/mediatek,dsi.yaml        | 85 +++++++++++++++++++
>   2 files changed, 85 insertions(+), 62 deletions(-)
>   delete mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
>   create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> deleted file mode 100644
> index 36b01458f45c..000000000000
> --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.txt
> +++ /dev/null
> @@ -1,62 +0,0 @@
> -Mediatek DSI Device
> -===================
> -
> -The Mediatek DSI function block is a sink of the display subsystem and can
> -drive up to 4-lane MIPI DSI output. Two DSIs can be synchronized for dual-
> -channel output.
> -
> -Required properties:
> -- compatible: "mediatek,<chip>-dsi"
> -- the supported chips are mt2701, mt7623, mt8167, mt8173 and mt8183.
> -- reg: Physical base address and length of the controller's registers
> -- interrupts: The interrupt signal from the function block.
> -- clocks: device clocks
> -  See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> -- clock-names: must contain "engine", "digital", and "hs"
> -- phys: phandle link to the MIPI D-PHY controller.
> -- phy-names: must contain "dphy"
> -- port: Output port node with endpoint definitions as described in
> -  Documentation/devicetree/bindings/graph.txt. This port should be connected
> -  to the input port of an attached DSI panel or DSI-to-eDP encoder chip.
> -
> -Optional properties:
> -- resets: list of phandle + reset specifier pair, as described in [1].
> -
> -[1] Documentation/devicetree/bindings/reset/reset.txt
> -
> -MIPI TX Configuration Module
> -============================
> -
> -See phy/mediatek,dsi-phy.yaml
> -
> -Example:
> -
> -mipi_tx0: mipi-dphy@10215000 {
> -	compatible = "mediatek,mt8173-mipi-tx";
> -	reg = <0 0x10215000 0 0x1000>;
> -	clocks = <&clk26m>;
> -	clock-output-names = "mipi_tx0_pll";
> -	#clock-cells = <0>;
> -	#phy-cells = <0>;
> -	drive-strength-microamp = <4600>;
> -	nvmem-cells= <&mipi_tx_calibration>;
> -	nvmem-cell-names = "calibration-data";
> -};
> -
> -dsi0: dsi@1401b000 {
> -	compatible = "mediatek,mt8173-dsi";
> -	reg = <0 0x1401b000 0 0x1000>;
> -	interrupts = <GIC_SPI 192 IRQ_TYPE_LEVEL_LOW>;
> -	clocks = <&mmsys MM_DSI0_ENGINE>, <&mmsys MM_DSI0_DIGITAL>,
> -		 <&mipi_tx0>;
> -	clock-names = "engine", "digital", "hs";
> -	resets = <&mmsys MT8173_MMSYS_SW0_RST_B_DISP_DSI0>;
> -	phys = <&mipi_tx0>;
> -	phy-names = "dphy";
> -
> -	port {
> -		dsi0_out: endpoint {
> -			remote-endpoint = <&panel_in>;
> -		};
> -	};
> -};
> diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> new file mode 100644
> index 000000000000..552a013786fe
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,dsi.yaml
> @@ -0,0 +1,85 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mediatek/mediatek,dsi.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: mediatek DSI Controller Device Tree Bindings

Shouldn't this be "MediaTek"?

> +
> +maintainers:
> +  - CK Hu <ck.hu@xxxxxxxxxxxx>
> +  - Jitao Shi <jitao.shi@xxxxxxxxxxxx>
> +  - Xinlei Lee <xinlei.lee@xxxxxxxxxxxx>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt2701-dsi
> +      - mediatek,mt8173-dsi
> +      - mediatek,mt8183-dsi
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: Engine Clock
> +      - description: Digital Clock
> +      - description: Hs Clock

HS should be all capital letters.

> +
> +  clock-names:
> +    items:
> +      - const: engine
> +      - const: digital
> +      - const: hs
> +
> +  resets:
> +    maxItems: 1
> +
> +  phys:
> +    maxItems: 1
> +
> +  phy-names:
> +    items:
> +      - const: dphy

Add #address-cells, #size-cells with const 2

> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - power-domains
> +  - clocks
> +  - clock-names
> +  - phys
> +  - phy-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/mt8183-clk.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/power/mt8183-power.h>
> +    #include <dt-bindings/phy/phy.h>
> +    #include <dt-bindings/reset/mt8183-resets.h>
> +

Since all users are using two address and size cells:

    soc {
        #address-cells = <2>;
        #size-cells = <2>;

        dsi0: dsi@14014000 {
            compatible = "mediatek,mt8183-dsi";
            reg = <0 0x14014000 0 0x1000>;
                  .....etc.....
        };
    };

> +    dsi0: dsi@14014000 {
> +        compatible = "mediatek,mt8183-dsi";
> +        reg = <0x14014000 0x1000>;
> +        interrupts = <GIC_SPI 236 IRQ_TYPE_LEVEL_LOW>;
> +        power-domains = <&spm MT8183_POWER_DOMAIN_DISP>;
> +        clocks = <&mmsys CLK_MM_DSI0_MM>,
> +            <&mmsys CLK_MM_DSI0_IF>,
> +            <&mipi_tx0>;
> +        clock-names = "engine", "digital", "hs";
> +        resets = <&mmsys MT8183_MMSYS_SW0_RST_B_DISP_DSI0>;
> +        phys = <&mipi_tx0>;
> +        phy-names = "dphy";
> +    };