This driver parses the reboot commands like "reboot bootloader" and "reboot recovery" to get a boot mode described in the device tree , then call the corresponding write interfae to store the boot mode in some place like special register or ram , which can be read by the bootloader after system reboot. This is commonly done on Android based devices, in order to reboot the device into fastboot or recovery mode. Changes in v9: - select MFD_SYSCON when syscon-reboot-mode driver enabled - refactoring error handling in reboot_mode_register Changes in v8: - do some cleanup when driver ubind Changes in v7: - fix some spelling mistakes - declare that the mode magic should be none-zero value - address some suggestions from Krzysztof, make syscon-reboot-mode driver data self-contained. Changes in v6: - fix a typo with "property" - describe property "mask" more clear Changes in v5: - delete a unnecessary blank line in syscon-reboot-mode.txt - rename mode-fastoboot to mode-bootloader in syscon-reboot-mode.txt - rename macro BOOT_LOADER to BOOT_BL_DOWNLOAD, which gives a more clear mean - use two blank space under help in Kconfig - use unsigned int instead of int for member magic in struct mode_info Changes in v4: - remove mode-maskrom - rename mode-fastboot to mode-bootloader to keep compatible with the exiting Android device - make this driver depends on OF to avoid kbuild test error Changes in v3: - descirbe all reboot mode as properity instead of subnode - scan multi properities - add mask value for some platform which only use some bits of the register to store boot mode magic value - descirbe all reboot mode as property instead of subnode - add rk3036 support - descirbe all reboot mode as property instead of subnode Changes in v2: - move to dir drivers/power/reset/ - make syscon-reboot-mode a generic driver - make this node as a subnode of PMU - make this node as a subnode of 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 DT node ARM64: dts: rockchip: add syscon-reboot-mode DT node .../bindings/power/reset/reboot-mode.txt | 25 ++++ .../bindings/power/reset/syscon-reboot-mode.txt | 35 ++++++ arch/arm/boot/dts/rk3036.dtsi | 11 +- arch/arm/boot/dts/rk3288.dtsi | 10 ++ arch/arm/boot/dts/rk3xxx.dtsi | 12 +- arch/arm64/boot/dts/rockchip/rk3368.dtsi | 12 +- drivers/power/reset/Kconfig | 14 +++ drivers/power/reset/Makefile | 2 + drivers/power/reset/reboot-mode.c | 128 +++++++++++++++++++++ drivers/power/reset/reboot-mode.h | 14 +++ drivers/power/reset/syscon-reboot-mode.c | 100 ++++++++++++++++ include/dt-bindings/soc/rockchip_boot-mode.h | 15 +++ 12 files changed, 375 insertions(+), 3 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 -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
