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Linux_Drivers/u-boot-2021.10/doc/device-tree-bindings/reboot-mode/reboot-mode-rtc.txt
sam.xiang f8fc109960 [uboot] create uboot from github:
repo: https://github.com/u-boot/u-boot
	commit: d80bb749fab53da72c4a0e09b8c2d2aaa3103c91

Change-Id: Ie6434426e1ec15bc08bb1832798e371f3fd5fb29
2023-03-10 20:30:57 +08:00

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RTC Reboot Mode Configuration
Required Properties:
- compatible: must be "reboot-mode-rtc".
- rtc: reference to the rtc device used.
- reg: start register and the number of bytes used. Maximum 4 bytes supported.
- modes: list of properties that define the modes and associated unique ids.
Optional Properties:
- u-boot,env-variable: used to save the reboot mode (default: reboot-mode).
- big-endian: if the magic value is stored in big-endian. (default: false).
Example:
reboot-mode-rtc {
compatible = "reboot-mode-rtc";
rtc = <&rtc_0>;
reg = <0x14 4>;
u-boot,env-variable = "bootstatus";
big-endian;
modes-test = <0x21969147>;
modes-download = <0x51939147>;
};