Hi Nandor,
On Thu, 10 Jun 2021 at 07:57, Nandor Han nandor.han@vaisala.com wrote:
RTC devices could provide battery-backed memory that can be used for storing the reboot mode magic value.
Add a new reboot-mode back-end that uses RTC to store the reboot-mode magic value. The driver also supports both endianness modes.
Signed-off-by: Nandor Han nandor.han@vaisala.com
arch/sandbox/dts/test.dts | 10 ++ configs/sandbox_defconfig | 1 + .../reboot-mode/reboot-mode-rtc.txt | 22 +++ drivers/reboot-mode/Kconfig | 9 ++ drivers/reboot-mode/Makefile | 1 + drivers/reboot-mode/reboot-mode-rtc.c | 127 ++++++++++++++++++ include/reboot-mode/reboot-mode-rtc.h | 16 +++ test/dm/reboot-mode.c | 29 ++++ 8 files changed, 215 insertions(+) create mode 100644 doc/device-tree-bindings/reboot-mode/reboot-mode-rtc.txt create mode 100644 drivers/reboot-mode/reboot-mode-rtc.c create mode 100644 include/reboot-mode/reboot-mode-rtc.h
Reviewed-by: Simon Glass sjg@chromium.org
But I think it would be better to put this device as a child of the rtc, so it is more obvious that they are related. It also avoids the phandle. What do you think?