Add device tree bindings for the LCD Controller (LCDC) found in Renesas SuperH SH-Mobile and ARM SH/R-Mobile SOCs. Based on a plain text prototype by Laurent Pinchart. Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> --- Cc: Rob Herring <robh+dt@xxxxxxxxxx> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@xxxxxxxxxx> Cc: Conor Dooley <conor+dt@xxxxxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx v2: - Add myself as co-maintainer, - Make fck clock required, - Drop ports description referring to obsolete graph.txt, - Condition ports to compatible strings, - Drop label and status from example. Changes compared to Laurent's original: - Convert to json-schema, - Rename compatible values from "renesas,lcdc-<SoC>" to "renesas,<SoC>-lcdc", - Add power-domains property, - Add MIPI-DSI port on SH-Mobile AG5, - Update example to reflect reality, - Add to MAINTAINERS. --- .../display/renesas,shmobile-lcdc.yaml | 130 ++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 131 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml diff --git a/Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml b/Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml new file mode 100644 index 0000000000000000..9816c4cacc7d9a7f --- /dev/null +++ b/Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml @@ -0,0 +1,130 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/renesas,shmobile-lcdc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas SH-Mobile LCD Controller (LCDC) + +maintainers: + - Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> + - Geert Uytterhoeven <geert+renesas@xxxxxxxxx> + +properties: + compatible: + enum: + - renesas,r8a7740-lcdc # R-Mobile A1 + - renesas,sh73a0-lcdc # SH-Mobile AG5 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 5 + description: + Only the functional clock is mandatory. + Some of the optional clocks are model-dependent (e.g. "video" (a.k.a. + "vou" or "dv_clk") is available on R-Mobile A1 only). + + clock-names: + minItems: 1 + items: + - const: fck + - enum: [ media, lclk, hdmi, video ] + - enum: [ media, lclk, hdmi, video ] + - enum: [ media, lclk, hdmi, video ] + - enum: [ media, lclk, hdmi, video ] + + power-domains: + maxItems: 1 + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/properties/port + description: LCD port (R-Mobile A1 and SH-Mobile AG5) + unevaluatedProperties: false + + port@1: + $ref: /schemas/graph.yaml#/properties/port + description: HDMI port (R-Mobile A1 LCDC1 and SH-Mobile AG5) + unevaluatedProperties: false + + port@2: + $ref: /schemas/graph.yaml#/properties/port + description: MIPI-DSI port (SH-Mobile AG5) + unevaluatedProperties: false + + required: + - port@0 + + unevaluatedProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - power-domains + - ports + +additionalProperties: false + +allOf: + - if: + properties: + compatible: + contains: + const: renesas,r8a7740-lcdc + then: + properties: + ports: + properties: + port@2: false + + - if: + properties: + compatible: + contains: + const: renesas,sh73a0-lcdc + then: + properties: + ports: + required: + - port@1 + - port@2 + +examples: + - | + #include <dt-bindings/clock/r8a7740-clock.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + lcd-controller@fe940000 { + compatible = "renesas,r8a7740-lcdc"; + reg = <0xfe940000 0x4000>; + interrupts = <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&mstp1_clks R8A7740_CLK_LCDC0>, + <&cpg_clocks R8A7740_CLK_M3>, <&lcdlclk0_clk>, + <&vou_clk>; + clock-names = "fck", "media", "lclk", "video"; + power-domains = <&pd_a4lc>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + lcdc0_rgb: endpoint { + }; + }; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index dc6bef7738f50741..1d12c07efae1c347 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6993,6 +6993,7 @@ M: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> L: dri-devel@xxxxxxxxxxxxxxxxxxxxx L: linux-renesas-soc@xxxxxxxxxxxxxxx S: Supported +F: Documentation/devicetree/bindings/display/renesas,shmobile-lcdc.yaml F: drivers/gpu/drm/renesas/shmobile/ F: include/linux/platform_data/shmob_drm.h -- 2.34.1