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 | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
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 @@ 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 {
+ 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 {
--
2.36.1
