Am Mittwoch, 18. November 2015, 17:47:24 schrieb Andy Yan: > rockchip platform have a protocol to pass the kernel reboot > mode to bootloader by some special registers when system reboot. > By this way the bootloader can take different action according > to the different kernel reboot mode, for example, command > "reboot loader" will reboot the board to rockusb mode, this is > a very convenient way to get the board enter download mode. > And Android system also use this protocol to pass "recovery"? > ?fastboot? reboot mode to bootloader. In upstream land, We found > tegra platform also use this mechanism. > > Before this version, I have sent two Series, which can be found > at [0] [1] > [0] https://patchwork.kernel.org/patch/7140751/ > [1] https://patchwork.kernel.org/patch/7153531/ just so it doesn't get lost, this ties into a slightly more generic approach, John Stultz is doing for the android reboot reasons: http://thread.gmane.org/gmane.linux.kernel/2103447 The only difference is that we'd need to use the pmu syscon for it. > Changes in v3: > - rename a pinctrl node in rk3288-veyron, the original name will be > used in the incoming reboot notifier driver > - add dt binding > - move from mach-rockchip to drivers/soc/rockchip, as the tegra does > - use dts pass the related register > - add DT node > > Changes in v2: > - check cpu dt node > - remove a unnecessary of_put_node in function rockchip_get_pmu_regmap > - fix a align issue > - use reboot_notifier instead of restart_handler > > Andy Yan (5): > ARM: dts: rockchip: rk3288-veyron: rename pinctrl node reboot to reset > dt-bindings: soc: add document for rockchip reboot notifier driver > soc: rockchip: add reboot notifier driver > ARM: dts: rockchip: add reboot node > ARM64: dts: rockchip: add reboot node > > .../bindings/soc/rockchip/rockchip-reboot.txt | 18 ++++ > arch/arm/boot/dts/rk3288-veyron.dtsi | 2 +- > arch/arm/boot/dts/rk3288.dtsi | 6 ++ > arch/arm/boot/dts/rk3xxx.dtsi | 6 ++ > arch/arm64/boot/dts/rockchip/rk3368.dtsi | 6 ++ > drivers/soc/rockchip/Kconfig | 7 ++ > drivers/soc/rockchip/Makefile | 1 + > drivers/soc/rockchip/loader.h | 22 +++++ > drivers/soc/rockchip/reboot.c | 98 > ++++++++++++++++++++++ 9 files changed, 165 insertions(+), 1 deletion(-) > create mode 100644 > Documentation/devicetree/bindings/soc/rockchip/rockchip-reboot.txt create > mode 100644 drivers/soc/rockchip/loader.h > create mode 100644 drivers/soc/rockchip/reboot.c
