From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- .../devicetree/bindings/rtc/sun6i-rtc.txt | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/sun6i-rtc.txt (limited to 'Documentation/devicetree/bindings/rtc/sun6i-rtc.txt') diff --git a/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt b/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt new file mode 100644 index 000000000..12c083c11 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/sun6i-rtc.txt @@ -0,0 +1,27 @@ +* sun6i Real Time Clock + +RTC controller for the Allwinner A31 + +Required properties: +- compatible : Should be "allwinner,sun6i-a31-rtc" +- 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 the LOSC and its external output clocks created +- #clock-cells : must be equals to 1. The RTC provides two clocks: the + LOSC and its external output, with index 0 and 1 + respectively. + +Example: + +rtc: rtc@1f00000 { + compatible = "allwinner,sun6i-a31-rtc"; + reg = <0x01f00000 0x54>; + interrupts = <0 40 4>, <0 41 4>; + clock-output-names = "osc32k", "osc32k-out"; + clocks = <&ext_osc32k>; + #clock-cells = <1>; +}; -- cgit v1.2.3