| # SPDX-License-Identifier: GPL-2.0 |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Broadcom VC4 (VideoCore4) HDMI Controller |
| |
| maintainers: |
| - Eric Anholt <eric@anholt.net> |
| |
| properties: |
| compatible: |
| const: brcm,bcm2835-hdmi |
| |
| reg: |
| items: |
| - description: HDMI register range |
| - description: HD register range |
| |
| interrupts: |
| minItems: 2 |
| |
| clocks: |
| items: |
| - description: The pixel clock |
| - description: The HDMI state machine clock |
| |
| clock-names: |
| items: |
| - const: pixel |
| - const: hdmi |
| |
| ddc: |
| $ref: /schemas/types.yaml#/definitions/phandle |
| description: > |
| Phandle of the I2C controller used for DDC EDID probing |
| |
| 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) |
| |
| dmas: |
| maxItems: 1 |
| description: > |
| Should contain one entry pointing to the DMA channel used to |
| transfer audio data. |
| |
| dma-names: |
| const: audio-rx |
| |
| required: |
| - compatible |
| - reg |
| - interrupts |
| - clocks |
| - ddc |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/clock/bcm2835.h> |
| #include <dt-bindings/gpio/gpio.h> |
| |
| hdmi: hdmi@7e902000 { |
| compatible = "brcm,bcm2835-hdmi"; |
| reg = <0x7e902000 0x600>, |
| <0x7e808000 0x100>; |
| interrupts = <2 8>, <2 9>; |
| ddc = <&i2c2>; |
| hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; |
| clocks = <&clocks BCM2835_PLLH_PIX>, |
| <&clocks BCM2835_CLOCK_HSM>; |
| clock-names = "pixel", "hdmi"; |
| }; |
| |
| ... |
