Hi , ? 2016?01?12? 19:27, Andy Yan ??: > This driver parse the reboot commands like "reboot loader" > and "reboot recovery" to get a boot mode described in the > device tree , then call the corresponding write interface > to store the boot mode magic value in some persistent storage > like special register or ram , which can be read by the bootloader > after system reboot. > > This is commonly used on Android based devices, which in order > to reboot the device into fastboot or recovery mode. > > Before this patch , I have try some hack on[0], and then found > John Stultz also doing the same work[1]. > > As John is busy these days, I go on with this work. > > [0]https://patchwork.kernel.org/patch/7647751/ > [1]https://patchwork.kernel.org/patch/7802391/ > > Changes in v2: > - move to dir drivers/power/reset/ > - make syscon-reboot-mode a generic driver > - make this DT node as a subnode of PMU/PMUGRF > > Changes in v1: > - fix the embarrassed compile warning > - correct the maskrom magic number > - check for the normal reboot > - correct the maskrom magic number > - use macro defined in rockchip_boot-mode.h for reboot-mode DT node > > Andy Yan (4): > dt-bindings: power: reset: add document for reboot-mode driver > power: reset: add reboot mode driver > ARM: dts: rockchip: add syscon-reboot-mode node > ARM64: dts: rockchip: add syscon-reboot-mode DT node This series patches are verified by my github based on kernel 4.4 release. https://github.com/Caesar-github/rockchip/commits/kylin-develop4.4 reboot loader, reboot recovery, reboot fastboot..... these are okay for rk3288, rk3368. rk3036 Socs on my hand board. (Note: the loader need that jeffy send patches to support uboot on upstream, that's also okay if you are using the RK loader from Rockchip) I just send the patch to support the rk3036 dts. <https://patchwork.kernel.org/patch/8021581/> So feel free add my test tags: Tested-by: Caesar Wang <wxt at rock-chips.com> > > .../bindings/power/reset/reboot-mode.txt | 41 +++++++++ > .../bindings/power/reset/syscon-reboot-mode.txt | 52 +++++++++++ > arch/arm/boot/dts/rk3288.dtsi | 31 +++++++ > arch/arm/boot/dts/rk3xxx.dtsi | 33 ++++++- > arch/arm64/boot/dts/rockchip/rk3368.dtsi | 33 ++++++- > drivers/power/reset/Kconfig | 16 ++++ > drivers/power/reset/Makefile | 2 + > drivers/power/reset/reboot-mode.c | 100 +++++++++++++++++++++ > drivers/power/reset/reboot-mode.h | 6 ++ > drivers/power/reset/syscon-reboot-mode.c | 62 +++++++++++++ > include/dt-bindings/soc/rockchip_boot-mode.h | 30 +++++++ > 11 files changed, 404 insertions(+), 2 deletions(-) > create mode 100644 Documentation/devicetree/bindings/power/reset/reboot-mode.txt > create mode 100644 Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt > create mode 100644 drivers/power/reset/reboot-mode.c > create mode 100644 drivers/power/reset/reboot-mode.h > create mode 100644 drivers/power/reset/syscon-reboot-mode.c > create mode 100644 include/dt-bindings/soc/rockchip_boot-mode.h > -- Thanks, Caesar
