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196 lines
4.0 KiB
YAML
196 lines
4.0 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/rtc/allwinner,sun6i-a31-rtc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Allwinner A31 RTC Device Tree Bindings
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maintainers:
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- Chen-Yu Tsai <wens@csie.org>
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- Maxime Ripard <mripard@kernel.org>
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properties:
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"#clock-cells":
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const: 1
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compatible:
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oneOf:
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- enum:
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- allwinner,sun6i-a31-rtc
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- allwinner,sun8i-a23-rtc
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- allwinner,sun8i-h3-rtc
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- allwinner,sun8i-r40-rtc
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- allwinner,sun8i-v3-rtc
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- allwinner,sun50i-h5-rtc
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- allwinner,sun50i-h6-rtc
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- allwinner,sun50i-h616-rtc
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- allwinner,sun50i-r329-rtc
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- items:
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- const: allwinner,sun50i-a64-rtc
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- const: allwinner,sun8i-h3-rtc
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- items:
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- const: allwinner,sun20i-d1-rtc
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- const: allwinner,sun50i-r329-rtc
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reg:
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maxItems: 1
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interrupts:
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minItems: 1
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items:
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- description: RTC Alarm 0
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- description: RTC Alarm 1
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clocks:
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minItems: 1
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maxItems: 4
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clock-names:
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minItems: 1
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maxItems: 4
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clock-output-names:
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minItems: 1
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maxItems: 3
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description:
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The RTC provides up to three clocks
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- the Low Frequency Oscillator or LOSC, at index 0,
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- the Low Frequency Oscillator External output (X32KFOUT in
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the datasheet), at index 1,
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- the Internal Oscillator, at index 2.
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allOf:
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- $ref: "rtc.yaml#"
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- if:
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properties:
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compatible:
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contains:
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const: allwinner,sun6i-a31-rtc
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then:
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properties:
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clock-output-names:
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maxItems: 1
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- if:
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properties:
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compatible:
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contains:
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enum:
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- allwinner,sun8i-a23-rtc
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- allwinner,sun8i-r40-rtc
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- allwinner,sun8i-v3-rtc
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then:
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properties:
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clock-output-names:
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minItems: 2
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maxItems: 2
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- if:
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properties:
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compatible:
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contains:
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enum:
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- allwinner,sun8i-h3-rtc
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- allwinner,sun50i-h5-rtc
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- allwinner,sun50i-h6-rtc
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then:
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properties:
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clock-output-names:
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minItems: 3
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- if:
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properties:
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compatible:
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contains:
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const: allwinner,sun50i-h616-rtc
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then:
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properties:
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clocks:
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items:
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- description: Bus clock for register access
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- description: 24 MHz oscillator
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- description: 32 kHz clock from the CCU
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clock-names:
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items:
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- const: bus
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- const: hosc
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- const: pll-32k
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required:
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- clocks
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- clock-names
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- if:
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properties:
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compatible:
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contains:
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const: allwinner,sun50i-r329-rtc
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then:
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properties:
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clocks:
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minItems: 3
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items:
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- description: Bus clock for register access
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- description: 24 MHz oscillator
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- description: AHB parent for internal SPI clock
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- description: External 32768 Hz oscillator
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clock-names:
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minItems: 3
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items:
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- const: bus
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- const: hosc
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- const: ahb
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- const: ext-osc32k
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required:
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- clocks
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- clock-names
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- if:
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properties:
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compatible:
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contains:
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enum:
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- allwinner,sun8i-r40-rtc
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- allwinner,sun50i-h616-rtc
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- allwinner,sun50i-r329-rtc
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then:
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properties:
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interrupts:
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maxItems: 1
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else:
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properties:
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interrupts:
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minItems: 2
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required:
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- "#clock-cells"
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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rtc: rtc@1f00000 {
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compatible = "allwinner,sun6i-a31-rtc";
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reg = <0x01f00000 0x400>;
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interrupts = <0 40 4>, <0 41 4>;
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clock-output-names = "osc32k";
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clocks = <&ext_osc32k>;
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#clock-cells = <1>;
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};
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...
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