This series hooks up the watchdog uclass to automatically register watchdog devices for use with sysreset, doing a bit of minor cleanup along the way.
The goal is for this to replace the sunxi board-level non-DM reset_cpu() function. I was surprised to find that the wdt_reboot driver requires its own undocumented device tree node, which references the watchdog device by phandle. This is problematic for us, because sunxi-u-boot.dtsi file covers 20 different SoCs with varying watchdog node phandle names. So it would have required adding a -u-boot.dtsi file for each board.
Hooking things up automatically makes sense to me; this is what Linux does. However, I put the code behind a new option to avoid surprises for other platforms.
Changes in v3: - Move condition to wdt-uclass.c to fix build errors. - Include watchdog name in error message.
Changes in v2: - Extend the "if SYSRESET" block to the end of the file. - Also make gpio_reboot_probe function static. - Rebase on top of 492ee6b8d0e7 (now handle all watchdogs). - Added patches 5-6 as an example of how the new option will be used.
Samuel Holland (6): sysreset: Add uclass Kconfig dependency to drivers sysreset: Mark driver probe functions as static sysreset: watchdog: Move watchdog reference to plat data watchdog: Automatically register device with sysreset sunxi: Avoid duplicate reset_cpu with SYSRESET enabled sunxi: Use sysreset framework for poweroff/reset
arch/arm/Kconfig | 3 +++ arch/arm/mach-sunxi/board.c | 2 ++ drivers/sysreset/Kconfig | 11 ++++++-- drivers/sysreset/sysreset_gpio.c | 2 +- drivers/sysreset/sysreset_resetctl.c | 2 +- drivers/sysreset/sysreset_syscon.c | 2 +- drivers/sysreset/sysreset_watchdog.c | 40 ++++++++++++++++++++++------ drivers/watchdog/wdt-uclass.c | 8 ++++++ include/sysreset.h | 10 +++++++ 9 files changed, 67 insertions(+), 13 deletions(-)