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arm64: dts: exynos: add syscon reboot/reboot_mode support in ExynosAutov9

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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>
This commit is contained in:
Chanho Park 2022-05-23 21:12:44 +09:00 committed by Krzysztof Kozlowski
parent 9509995155
commit 694d04a1d5
1 changed files with 17 additions and 0 deletions
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17
arch/arm64/boot/dts/exynos/exynosautov9.dtsi
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@ -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 {