Commit 93266da2 authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Rob Herring
Browse files

dt-bindings: display: Convert fsl,imx-fb.txt to dt-schema 



Compared to the txt description this adds clocks and clock-names to
match reality.

Note that fsl,imx-lcdc was picked as the new name as this is the actual
hardware's name. There will be a new binding implementing the saner drm
concept that is supposed to supersede this legacy fb binding

Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221129180414.2729091-1-u.kleine-koenig@pengutronix.de


Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent 7621aabd

Documentation/devicetree/bindings/display/imx/fsl,imx-fb.txt

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Freescale imx21 Framebuffer



This framebuffer driver supports devices imx1, imx21, imx25, and imx27.



Required properties:

- compatible : "fsl,<chip>-fb", chip should be imx1 or imx21

- reg : Should contain 1 register ranges(address and length)

- interrupts : One interrupt of the fb dev



Required nodes:

- display: Phandle to a display node as described in

	Documentation/devicetree/bindings/display/panel/display-timing.txt

	Additional, the display node has to define properties:

	- bits-per-pixel: Bits per pixel

	- fsl,pcr: LCDC PCR value

	A display node may optionally define

	- fsl,aus-mode: boolean to enable AUS mode (only for imx21)



Optional properties:

- lcd-supply: Regulator for LCD supply voltage.

- fsl,dmacr: DMA Control Register value. This is optional. By default, the

	register is not modified as recommended by the datasheet.

- fsl,lpccr: Contrast Control Register value. This property provides the

	default value for the contrast control register.

	If that property is omitted, the register is zeroed.

- fsl,lscr1: LCDC Sharp Configuration Register value.



Example:



	imxfb: fb@10021000 {

		compatible = "fsl,imx21-fb";

		interrupts = <61>;

		reg = <0x10021000 0x1000>;

		display = <&display0>;

	};



	...



	display0: display0 {

		model = "Primeview-PD050VL1";

		bits-per-pixel = <16>;

		fsl,pcr = <0xf0c88080>;	/* non-standard but required */

		display-timings {

			native-mode = <&timing_disp0>;

			timing_disp0: 640x480 {

				hactive = <640>;

				vactive = <480>;

				hback-porch = <112>;

				hfront-porch = <36>;

				hsync-len = <32>;

				vback-porch = <33>;

				vfront-porch = <33>;

				vsync-len = <2>;

				clock-frequency = <25000000>;

			};

		};

	};

Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/display/imx/fsl,imx-lcdc.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Freescale i.MX LCD Controller, found on i.MX1, i.MX21, i.MX25 and i.MX27



maintainers:

  - Sascha Hauer <s.hauer@pengutronix.de>

  - Pengutronix Kernel Team <kernel@pengutronix.de>



properties:

  compatible:

    oneOf:

      - enum:

          - fsl,imx1-fb

          - fsl,imx21-fb

      - items:

          - enum:

              - fsl,imx25-fb

              - fsl,imx27-fb

          - const: fsl,imx21-fb



  clocks:

    maxItems: 3



  clock-names:

    items:

      - const: ipg

      - const: ahb

      - const: per



  display:

    $ref: /schemas/types.yaml#/definitions/phandle



  interrupts:

    maxItems: 1



  reg:

    maxItems: 1



  lcd-supply:

    description:

      Regulator for LCD supply voltage.



  fsl,dmacr:

    $ref: /schemas/types.yaml#/definitions/uint32

    description:

      Override value for DMA Control Register



  fsl,lpccr:

    $ref: /schemas/types.yaml#/definitions/uint32

    description:

      Contrast Control Register value.



  fsl,lscr1:

    $ref: /schemas/types.yaml#/definitions/uint32

    description:

      LCDC Sharp Configuration Register value.



required:

  - compatible

  - clocks

  - clock-names

  - display

  - interrupts

  - reg



additionalProperties: false



examples:

  - |

    imxfb: fb@10021000 {

        compatible = "fsl,imx21-fb";

        interrupts = <61>;

        reg = <0x10021000 0x1000>;

        display = <&display0>;

        clocks = <&clks 103>, <&clks 49>, <&clks 66>;

        clock-names = "ipg", "ahb", "per";

    };



    display0: display0 {

        model = "Primeview-PD050VL1";

        bits-per-pixel = <16>;

        fsl,pcr = <0xf0c88080>; /* non-standard but required */



        display-timings {

            native-mode = <&timing_disp0>;

            timing_disp0: timing0 {

                hactive = <640>;

                vactive = <480>;

                hback-porch = <112>;

                hfront-porch = <36>;

                hsync-len = <32>;

                vback-porch = <33>;

                vfront-porch = <33>;

                vsync-len = <2>;

                clock-frequency = <25000000>;

            };

        };

    };