| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | |
| 7 | title: Broadcom VC4 (VideoCore4) HDMI Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Eric Anholt <eric@anholt.net> |
| 11 | |
| 12 | properties: |
| 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 | |
| 57 | required: |
| 58 | - compatible |
| 59 | - reg |
| 60 | - interrupts |
| 61 | - clocks |
| 62 | - ddc |
| 63 | |
| 64 | additionalProperties: false |
| 65 | |
| 66 | examples: |
| 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 | ... |