mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 11:21:33 +00:00
4da722ca19
Pretty much any node can have a status property, so it doesn't need to be in examples. Converted with the following command and removed examples with SoC and board specific splits: git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d' Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Rob Herring <robh@kernel.org>
49 lines
1.5 KiB
Plaintext
49 lines
1.5 KiB
Plaintext
STM32 Real Time Clock
|
|
|
|
Required properties:
|
|
- compatible: can be either "st,stm32-rtc" or "st,stm32h7-rtc", depending on
|
|
the device is compatible with stm32(f4/f7) or stm32h7.
|
|
- reg: address range of rtc register set.
|
|
- clocks: can use up to two clocks, depending on part used:
|
|
- "rtc_ck": RTC clock source.
|
|
It is required on stm32(f4/f7) and stm32h7.
|
|
- "pclk": RTC APB interface clock.
|
|
It is not present on stm32(f4/f7).
|
|
It is required on stm32h7.
|
|
- clock-names: must be "rtc_ck" and "pclk".
|
|
It is required only on stm32h7.
|
|
- interrupt-parent: phandle for the interrupt controller.
|
|
- interrupts: rtc alarm interrupt.
|
|
- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
|
|
(RTC registers) write protection.
|
|
|
|
Optional properties (to override default rtc_ck parent clock):
|
|
- assigned-clocks: reference to the rtc_ck clock entry.
|
|
- assigned-clock-parents: phandle of the new parent clock of rtc_ck.
|
|
|
|
Example:
|
|
|
|
rtc: rtc@40002800 {
|
|
compatible = "st,stm32-rtc";
|
|
reg = <0x40002800 0x400>;
|
|
clocks = <&rcc 1 CLK_RTC>;
|
|
assigned-clocks = <&rcc 1 CLK_RTC>;
|
|
assigned-clock-parents = <&rcc 1 CLK_LSE>;
|
|
interrupt-parent = <&exti>;
|
|
interrupts = <17 1>;
|
|
st,syscfg = <&pwrcfg>;
|
|
};
|
|
|
|
rtc: rtc@58004000 {
|
|
compatible = "st,stm32h7-rtc";
|
|
reg = <0x58004000 0x400>;
|
|
clocks = <&rcc RTCAPB_CK>, <&rcc RTC_CK>;
|
|
clock-names = "pclk", "rtc_ck";
|
|
assigned-clocks = <&rcc RTC_CK>;
|
|
assigned-clock-parents = <&rcc LSE_CK>;
|
|
interrupt-parent = <&exti>;
|
|
interrupts = <17 1>;
|
|
interrupt-names = "alarm";
|
|
st,syscfg = <&pwrcfg>;
|
|
};
|