The newer Allwinner SoCs have an embedded RTC supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx> --- Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++- Documentation/devicetree/bindings/rtc/sun6i-rtc.txt | 46 +------------------------------ 2 files changed, 112 insertions(+), 46 deletions(-) create mode 100644 Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml delete mode 100644 Documentation/devicetree/bindings/rtc/sun6i-rtc.txt diff --git a/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml new file mode 100644 index 000000000000..942ddfc1689d --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/allwinner,sun6i-a31-rtc.yaml @@ -0,0 +1,112 @@ +# 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@xxxxxxxx> + - Maxime Ripard <maxime.ripard@xxxxxxxxxxx> + +properties: + "#clock-cells": + const: 1 + + compatible: + oneOf: + - const: allwinner,sun6i-a31-rtc + - const: allwinner,sun8i-a23-rtc + - const: allwinner,sun8i-h3-rtc + - const: allwinner,sun8i-v3-rtc + - const: allwinner,sun50i-h5-rtc + - items: + - const: allwinner,sun50i-a64-rtc + - const: allwinner,sun8i-h3-rtc + + reg: + maxItems: 1 + + interrupts: + items: + - description: RTC Alarm 0 + - description: RTC Alarm 1 + + clocks: + maxItems: 1 + + 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: + minItems: 1 + maxItems: 1 + + - if: + properties: + compatible: + contains: + enum: + - allwinner,sun8i-a23-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 + + then: + properties: + clock-output-names: + minItems: 3 + maxItems: 3 + +required: + - "#clock-cells" + - compatible + - reg + - interrupts + - clocks + - clock-output-names + +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>; + }; + +... diff --git a/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt b/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt deleted file mode 100644 index 6b732c41392b..000000000000 --- a/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt +++ /dev/null @@ -1,46 +0,0 @@ -* sun6i Real Time Clock - -RTC controller for the Allwinner A31 - -Required properties: -- compatible : Should be one of the following combinations: - - "allwinner,sun6i-a31-rtc" - - "allwinner,sun8i-a23-rtc" - - "allwinner,sun8i-h3-rtc" - - "allwinner,sun8i-r40-rtc", "allwinner,sun8i-h3-rtc" - - "allwinner,sun8i-v3-rtc" - - "allwinner,sun50i-a64-rtc", "allwinner,sun8i-h3-rtc" - - "allwinner,sun50i-h5-rtc" - - Where there are two or more compatible strings, this - denotes the hardware covered by the most specific one - is backward-compatible with the latter ones, and the - implementation for the latter ones can be used, albeit - with reduced functionality. - -- reg : physical base address of the controller and length of - memory mapped region. -- interrupts : IRQ lines for the RTC alarm 0 and alarm 1, in that order. - -Required properties for new device trees -- clocks : phandle to the 32kHz external oscillator -- clock-output-names : names of up to three clock outputs. See below. -- #clock-cells : must be equal to 1. - -The RTC provides the following clocks at the given indices: -- 0: LOSC -- 1: LOSC external output, known as X32KFOUT in the datasheet. - This clock is not available on the A31 and is deprecated for old - device trees still using the "allwinner,sun6i-a31-rtc" compatible. -- 2: InternalOSC, or internal RC oscillator (A64/H3/H5 only) - -Example: - -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>; -}; -- git-series 0.9.1
