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