new file mode 100644
@@ -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@ideasonboard.com>
+ - Geert Uytterhoeven <geert+renesas@glider.be>
+
+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 {
+ };
+ };
+ };
+ };
@@ -6993,6 +6993,7 @@ M: Geert Uytterhoeven <geert+renesas@glider.be>
L: dri-devel@lists.freedesktop.org
L: linux-renesas-soc@vger.kernel.org
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
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@glider.be> --- Cc: Rob Herring <robh+dt@kernel.org> Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org> Cc: Conor Dooley <conor+dt@kernel.org> Cc: devicetree@vger.kernel.org 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