Re: [PATCH v2 90/91] dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings
From: Rob Herring <robh@kernel.org>
Date: 2020-05-11 21:50:18
Also in:
dri-devel, linux-devicetree, lkml
On Fri, Apr 24, 2020 at 05:35:11PM +0200, Maxime Ripard wrote:
quoted hunk ↗ jump to hunk
The HDMI controllers found in the BCM2711 SoC need some adjustments to the bindings, especially since the registers have been shuffled around in more register ranges. Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Maxime Ripard <redacted> --- Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 109 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yamldiff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml new file mode 100644 index 000000000000..6091fe3d315b --- /dev/null +++ b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml@@ -0,0 +1,109 @@ +# SPDX-License-Identifier: GPL-2.0
Dual license
+%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/brcm,bcm2711-hdmi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM2711 HDMI Controller Device Tree Bindings + +maintainers: + - Eric Anholt [off-list ref] + +properties: + compatible: + enum: + - brcm,bcm2711-hdmi0 + - brcm,bcm2711-hdmi1 + + reg: + items: + - description: HDMI controller register range + - description: DVP register range + - description: HDMI PHY register range + - description: Rate Manager register range + - description: Packet RAM register range + - description: Metadata RAM register range + - description: CSC register range + - description: CEC register range + - description: HD register range + + reg-names: + items: + - const: hdmi + - const: dvp + - const: phy + - const: rm + - const: packet + - const: metadata + - const: csc + - const: cec + - const: hd + + clocks: + description: The HDMI state machine clock + + clock-names: + const: hdmi + + ddc: + allOf: + - $ref: /schemas/types.yaml#/definitions/phandle + description: > + Phandle of the I2C controller used for DDC EDID probing
This belongs in a connector node. (ddc-i2c-bus)
+ + hpd-gpios: + description: > + The GPIO pin for the HDMI hotplug detect (if it doesn't appear + as an interrupt/status bit in the HDMI controller itself)
This belongs in a connector node.
+
+ dmas:
+ maxItems: 1
+ description: >
+ Should contain one entry pointing to the DMA channel used to
+ transfer audio data.
+
+ dma-names:
+ const: audio-rx
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+ - resets
+ - ddc
+
+additionalProperties: false
+
+examples:
+ - |
+ hdmi0: hdmi@7ef00700 {
+ compatible = "brcm,bcm2711-hdmi0";
+ reg = <0x7ef00700 0x300>,
+ <0x7ef00300 0x200>,
+ <0x7ef00f00 0x80>,
+ <0x7ef00f80 0x80>,
+ <0x7ef01b00 0x200>,
+ <0x7ef01f00 0x400>,
+ <0x7ef00200 0x80>,
+ <0x7ef04300 0x100>,
+ <0x7ef20000 0x100>;
+ reg-names = "hdmi",
+ "dvp",
+ "phy",
+ "rm",
+ "packet",
+ "metadata",
+ "csc",
+ "cec",
+ "hd";
+ clocks = <&firmware_clocks 13>;
+ clock-names = "hdmi";
+ resets = <&dvp 0>;
+ ddc = <&ddc0>;
+ };
+
+...
--
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