diff options
| author | Chanho Park <chanho61.park@samsung.com> | 2022-05-23 21:12:44 +0900 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-06-06 10:35:18 +0200 |
| commit | 694d04a1d5449d948e438af1fd1d610d356bacc3 (patch) | |
| tree | 45233ad18de8ef0f0c10fe5a05b545707011511b | |
| parent | 95099951557c9eb2f180d6bcb9885eecaca97d24 (diff) | |
arm64: dts: exynos: add syscon reboot/reboot_mode support in ExynosAutov9
Reboot of exynosautov9 SoC can be handled by setting the
bit(SWRESET_SYSTEM[1]) of SYSTEM_CONFIGURATION register(PMU + 0x3a00).
syscon-reboot-mode can be used to indicate the reboot mode for
bootloader. SYSIP_DAT0 register(PMU + 0x810) will not be cleared after
reboot so bootloader can enter the boot mode according to the value.
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220523121244.67341-3-chanho61.park@samsung.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
| -rw-r--r-- | arch/arm64/boot/dts/exynos/exynosautov9.dtsi | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi index 0ce46ec5cdc3..3e23db8f09d9 100644 --- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi +++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi @@ -8,6 +8,7 @@ #include <dt-bindings/clock/samsung,exynosautov9.h> #include <dt-bindings/interrupt-controller/arm-gic.h> +#include <dt-bindings/soc/samsung,boot-mode.h> #include <dt-bindings/soc/samsung,exynos-usi.h> / { @@ -312,6 +313,22 @@ pmu_system_controller: system-controller@10460000 { compatible = "samsung,exynos7-pmu", "syscon"; reg = <0x10460000 0x10000>; + + reboot: syscon-reboot { + compatible = "syscon-reboot"; + regmap = <&pmu_system_controller>; + offset = <0x3a00>; /* SYSTEM_CONFIGURATION */ + value = <0x2>; + mask = <0x2>; + }; + + reboot-mode { + compatible = "syscon-reboot-mode"; + offset = <0x810>; /* SYSIP_DAT0 */ + mode-bootloader = <EXYNOSAUTOV9_BOOT_BOOTLOADER>; + mode-fastboot = <EXYNOSAUTOV9_BOOT_FASTBOOT>; + mode-recovery = <EXYNOSAUTOV9_BOOT_RECOVERY>; + }; }; syscon_fsys2: syscon@17c20000 { |