| STM32 Real Time Clock |
| |
| Required properties: |
| - compatible: "st,stm32-rtc". |
| - reg: address range of rtc register set. |
| - clocks: reference to the clock entry ck_rtc. |
| - 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 ck_rtc parent clock): |
| - assigned-clocks: reference to the ck_rtc clock entry. |
| - assigned-clock-parents: phandle of the new parent clock of ck_rtc. |
| |
| 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>; |
| }; |
