Commit 694d04a1 authored by Chanho Park's avatar Chanho Park Committed by Krzysztof Kozlowski
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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: default avatarChanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20220523121244.67341-3-chanho61.park@samsung.com


Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
parent 95099951

arch/arm64/boot/dts/exynos/exynosautov9.dtsi

+17 −0
Original line number Diff line number Diff line
@@ -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 {