1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Broadcom VC4 (VideoCore4) HDMI Controller 8 9maintainers: 10 - Eric Anholt <eric@anholt.net> 11 12properties: 13 compatible: 14 const: brcm,bcm2835-hdmi 15 16 reg: 17 items: 18 - description: HDMI register range 19 - description: HD register range 20 21 interrupts: 22 minItems: 2 23 24 clocks: 25 items: 26 - description: The pixel clock 27 - description: The HDMI state machine clock 28 29 clock-names: 30 items: 31 - const: pixel 32 - const: hdmi 33 34 ddc: 35 $ref: /schemas/types.yaml#/definitions/phandle 36 description: > 37 Phandle of the I2C controller used for DDC EDID probing 38 39 hpd-gpios: 40 maxItems: 1 41 description: > 42 The GPIO pin for the HDMI hotplug detect (if it doesn't appear 43 as an interrupt/status bit in the HDMI controller itself) 44 45 dmas: 46 maxItems: 1 47 description: > 48 Should contain one entry pointing to the DMA channel used to 49 transfer audio data. 50 51 dma-names: 52 const: audio-rx 53 54 power-domains: 55 maxItems: 1 56 57required: 58 - compatible 59 - reg 60 - interrupts 61 - clocks 62 - ddc 63 64additionalProperties: false 65 66examples: 67 - | 68 #include <dt-bindings/clock/bcm2835.h> 69 #include <dt-bindings/gpio/gpio.h> 70 71 hdmi: hdmi@7e902000 { 72 compatible = "brcm,bcm2835-hdmi"; 73 reg = <0x7e902000 0x600>, 74 <0x7e808000 0x100>; 75 interrupts = <2 8>, <2 9>; 76 ddc = <&i2c2>; 77 hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>; 78 clocks = <&clocks BCM2835_PLLH_PIX>, 79 <&clocks BCM2835_CLOCK_HSM>; 80 clock-names = "pixel", "hdmi"; 81 }; 82 83... 84