On Thu, Aug 13, 2020 at 04:29:03AM +0300, Laurent Pinchart wrote:
> Convert the mxsfb binding to YAML. The deprecated binding is dropped, as
> neither the DT sources nor the driver support it anymore.
Ah, the first display controller I worked on...
>
> The compatible strings are messy, and DT sources use different kinds of
> combination of documented and undocumented values. Keep it simple for
> now, and update the example to make it valid. Aligning the binding with
> the existing DT sources will be performed separately.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/display/mxsfb.txt | 87 -------------
> .../devicetree/bindings/display/mxsfb.yaml | 115 ++++++++++++++++++
> MAINTAINERS | 2 +-
> 3 files changed, 116 insertions(+), 88 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/display/mxsfb.txt
> create mode 100644 Documentation/devicetree/bindings/display/mxsfb.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/mxsfb.txt b/Documentation/devicetree/bindings/display/mxsfb.txt
> deleted file mode 100644
> index c985871c46b3..000000000000
> --- a/Documentation/devicetree/bindings/display/mxsfb.txt
> +++ /dev/null
> @@ -1,87 +0,0 @@
> -* Freescale MXS LCD Interface (LCDIF)
> -
> -New bindings:
> -=============
> -Required properties:
> -- compatible: Should be "fsl,imx23-lcdif" for i.MX23.
> - Should be "fsl,imx28-lcdif" for i.MX28.
> - Should be "fsl,imx6sx-lcdif" for i.MX6SX.
> - Should be "fsl,imx8mq-lcdif" for i.MX8MQ.
> -- reg: Address and length of the register set for LCDIF
> -- interrupts: Should contain LCDIF interrupt
> -- clocks: A list of phandle + clock-specifier pairs, one for each
> - entry in 'clock-names'.
> -- clock-names: A list of clock names. For MXSFB it should contain:
> - - "pix" for the LCDIF block clock
> - - (MX6SX-only) "axi", "disp_axi" for the bus interface clock
> -
> -Required sub-nodes:
> - - port: The connection to an encoder chip.
> -
> -Example:
> -
> - lcdif1: display-controller@2220000 {
> - compatible = "fsl,imx6sx-lcdif", "fsl,imx28-lcdif";
> - reg = <0x02220000 0x4000>;
> - interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&clks IMX6SX_CLK_LCDIF1_PIX>,
> - <&clks IMX6SX_CLK_LCDIF_APB>,
> - <&clks IMX6SX_CLK_DISPLAY_AXI>;
> - clock-names = "pix", "axi", "disp_axi";
> -
> - port {
> - parallel_out: endpoint {
> - remote-endpoint = <&panel_in_parallel>;
> - };
> - };
> - };
> -
> -Deprecated bindings:
> -====================
> -Required properties:
> -- compatible: Should be "fsl,imx23-lcdif" for i.MX23.
> - Should be "fsl,imx28-lcdif" for i.MX28.
> -- reg: Address and length of the register set for LCDIF
> -- interrupts: Should contain LCDIF interrupts
> -- display: phandle to display node (see below for details)
> -
> -* display node
> -
> -Required properties:
> -- bits-per-pixel: <16> for RGB565, <32> for RGB888/666.
> -- bus-width: number of data lines. Could be <8>, <16>, <18> or <24>.
> -
> -Required sub-node:
> -- display-timings: Refer to binding doc display-timing.txt for details.
> -
> -Examples:
> -
> -lcdif@80030000 {
> - compatible = "fsl,imx28-lcdif";
> - reg = <0x80030000 2000>;
> - interrupts = <38 86>;
> -
> - display: display {
> - bits-per-pixel = <32>;
> - bus-width = <24>;
> -
> - display-timings {
> - native-mode = <&timing0>;
> - timing0: timing0 {
> - clock-frequency = <33500000>;
> - hactive = <800>;
> - vactive = <480>;
> - hfront-porch = <164>;
> - hback-porch = <89>;
> - hsync-len = <10>;
> - vback-porch = <23>;
> - vfront-porch = <10>;
> - vsync-len = <10>;
> - hsync-active = <0>;
> - vsync-active = <0>;
> - de-active = <1>;
> - pixelclk-active = <0>;
> - };
> - };
> - };
> -};
> diff --git a/Documentation/devicetree/bindings/display/mxsfb.yaml b/Documentation/devicetree/bindings/display/mxsfb.yaml
> new file mode 100644
> index 000000000000..202381ec5bb7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/mxsfb.yaml
> @@ -0,0 +1,115 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/mxsfb.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale/NXP i.MX LCD Interface (LCDIF)
> +
> +maintainers:
> + - Marek Vasut <marex@xxxxxxx>
> + - Stefan Agner <stefan@xxxxxxxx>
> +
> +description: |
> + (e)LCDIF display controller found in the Freescale/NXP i.MX SoCs.
> +
> +properties:
> + compatible:
> + enum:
> + - fsl,imx23-lcdif
> + - fsl,imx28-lcdif
> + - fsl,imx6sx-lcdif
> + - fsl,imx8mq-lcdif
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: Pixel clock
> + - description: Bus clock
> + - description: Display AXI clock
> + minItems: 1
> +
> + clock-names:
> + items:
> + - const: "pix"
> + - const: "axi"
> + - const: "disp_axi"
Don't need quotes here.
> + minItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + port:
> + description: The LCDIF output port
> + type: object
> +
> + properties:
> + endpoint:
> + type: object
> +
> + properties:
> + remote-endpoint:
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> + required:
> + - remote-endpoint
> +
> + additionalProperties: false
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - interrupts
> + - port
> +
> +additionalProperties: false
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: fsl,imx6sx-lcdif
> + then:
> + properties:
> + clocks:
> + minItems: 2
> + maxItems: 3
> + clock-names:
> + minItems: 2
> + maxItems: 3
> + required:
> + - clock-names
> + else:
> + properties:
> + clocks:
> + minItems: 1
> + clock-names:
> + minItems: 1
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx6sx-clock.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + display-controller@2220000 {
> + compatible = "fsl,imx6sx-lcdif";
> + reg = <0x02220000 0x4000>;
> + interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
> + clocks = <&clks IMX6SX_CLK_LCDIF1_PIX>,
> + <&clks IMX6SX_CLK_LCDIF_APB>,
> + <&clks IMX6SX_CLK_DISPLAY_AXI>;
> + clock-names = "pix", "axi", "disp_axi";
> +
> + port {
> + endpoint {
> + remote-endpoint = <&panel_in>;
> + };
> + };
> + };
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index e3467e88714f..e3fac23383d2 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -11757,7 +11757,7 @@ M: Stefan Agner <stefan@xxxxxxxx>
> L: dri-devel@xxxxxxxxxxxxxxxxxxxxx
> S: Supported
> T: git git://anongit.freedesktop.org/drm/drm-misc
> -F: Documentation/devicetree/bindings/display/mxsfb.txt
> +F: Documentation/devicetree/bindings/display/mxsfb.yaml
> F: drivers/gpu/drm/mxsfb/
>
> MYLEX DAC960 PCI RAID Controller
> --
> Regards,
>
> Laurent Pinchart
>
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