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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/display/atmel,lcdc-display.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Microchip's LCDC Display maintainers: - Nicolas Ferre <nicolas.ferre@microchip.com> - Dharma Balasubiramani <dharma.b@microchip.com> description: The LCD Controller (LCDC) consists of logic for transferring LCD image data from an external display buffer to a TFT LCD panel. The LCDC has one display input buffer per layer that fetches pixels through the single bus host interface and a look-up table to allow palletized display configurations. The LCDC is programmable on a per layer basis, and supports different LCD resolutions, window sizes, image formats and pixel depths. # We need a select here since this schema is applicable only for nodes with the # following properties select: anyOf: - required: [ 'atmel,dmacon' ] - required: [ 'atmel,lcdcon2' ] - required: [ 'atmel,guard-time' ] properties: atmel,dmacon: $ref: /schemas/types.yaml#/definitions/uint32 description: dma controller configuration atmel,lcdcon2: $ref: /schemas/types.yaml#/definitions/uint32 description: lcd controller configuration atmel,guard-time: $ref: /schemas/types.yaml#/definitions/uint32 description: lcd guard time (Delay in frame periods) maximum: 127 bits-per-pixel: $ref: /schemas/types.yaml#/definitions/uint32 description: lcd panel bit-depth. enum: [1, 2, 4, 8, 16, 24, 32] atmel,lcdcon-backlight: $ref: /schemas/types.yaml#/definitions/flag description: enable backlight atmel,lcdcon-backlight-inverted: $ref: /schemas/types.yaml#/definitions/flag description: invert backlight PWM polarity atmel,lcd-wiring-mode: $ref: /schemas/types.yaml#/definitions/string description: lcd wiring mode "RGB" or "BRG" enum: - RGB - BRG atmel,power-control-gpio: description: gpio to power on or off the LCD (as many as needed) maxItems: 1 display-timings: $ref: panel/display-timings.yaml# required: - atmel,dmacon - atmel,lcdcon2 - atmel,guard-time - bits-per-pixel additionalProperties: false examples: - | display: panel { bits-per-pixel = <32>; atmel,lcdcon-backlight; atmel,dmacon = <0x1>; atmel,lcdcon2 = <0x80008002>; atmel,guard-time = <9>; atmel,lcd-wiring-mode = "RGB"; display-timings { native-mode = <&timing0>; timing0: timing0 { clock-frequency = <9000000>; hactive = <480>; vactive = <272>; hback-porch = <1>; hfront-porch = <1>; vback-porch = <40>; vfront-porch = <1>; hsync-len = <45>; vsync-len = <1>; }; }; }; |