| Amelie Delaunay | 7c60930 | 2017-01-05 14:43:23 +0100 | [diff] [blame^] | 1 | STM32 Real Time Clock |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible: "st,stm32-rtc". |
| 5 | - reg: address range of rtc register set. |
| 6 | - clocks: reference to the clock entry ck_rtc. |
| 7 | - interrupt-parent: phandle for the interrupt controller. |
| 8 | - interrupts: rtc alarm interrupt. |
| 9 | - st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain |
| 10 | (RTC registers) write protection. |
| 11 | |
| 12 | Optional properties (to override default ck_rtc parent clock): |
| 13 | - assigned-clocks: reference to the ck_rtc clock entry. |
| 14 | - assigned-clock-parents: phandle of the new parent clock of ck_rtc. |
| 15 | |
| 16 | Example: |
| 17 | |
| 18 | rtc: rtc@40002800 { |
| 19 | compatible = "st,stm32-rtc"; |
| 20 | reg = <0x40002800 0x400>; |
| 21 | clocks = <&rcc 1 CLK_RTC>; |
| 22 | assigned-clocks = <&rcc 1 CLK_RTC>; |
| 23 | assigned-clock-parents = <&rcc 1 CLK_LSE>; |
| 24 | interrupt-parent = <&exti>; |
| 25 | interrupts = <17 1>; |
| 26 | st,syscfg = <&pwrcfg>; |
| 27 | }; |