[PATCH] arm64: dts: exynoautov9: add syscon reboot/reboot_mode support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/exynos/exynosautov9.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
index 0ce46ec5cdc3..d99e53406ee0 100644
--- a/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynosautov9.dtsi
@@ -312,6 +312,22 @@ pinctrl_peric1: pinctrl@10830000 {
 		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: syscon-reboot-mode {
+				compatible = "syscon-reboot-mode";
+				offset = <0x810>; /* SYSIP_DAT0 */
+				mode-bootloader = <0xfc>;
+				mode-fastboot = <0xfa>;
+				mode-recovery = <0xff>;
+			};
 		};
 
 		syscon_fsys2: syscon@17c20000 {
-- 
2.36.1




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux