From: Chanho Park <chanho61.park@samsung.com>
To: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Alim Akhtar <alim.akhtar@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
Sam Protsenko <semen.protsenko@linaro.org>,
linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org,
Chanho Park <chanho61.park@samsung.com>
Subject: [PATCH v2 2/2] arm64: dts: exynoautov9: add syscon reboot/reboot_mode support
Date: Fri, 20 May 2022 20:52:50 +0900 [thread overview]
Message-ID: <20220520115250.57785-3-chanho61.park@samsung.com> (raw)
In-Reply-To: <20220520115250.57785-1-chanho61.park@samsung.com>
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>
---
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
prev parent reply other threads:[~2022-05-20 11:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20220520115216epcas2p26c1e257460970bfecabd621bc733a85d@epcas2p2.samsung.com>
2022-05-20 11:52 ` [PATCH v2 0/2] syscon reboot/reboot_mode support for exynosautov9 Chanho Park
[not found] ` <CGME20220520115216epcas2p20de68c07071435ae33b50c7b664a20eb@epcas2p2.samsung.com>
2022-05-20 11:52 ` [PATCH v2 1/2] dt-bindings: soc: add samsung,boot-mode definitions Chanho Park
2022-05-21 14:44 ` Krzysztof Kozlowski
2022-05-23 11:28 ` Chanho Park
[not found] ` <CGME20220520115216epcas2p1de431047122f853ed129785653b787a5@epcas2p1.samsung.com>
2022-05-20 11:52 ` Chanho Park [this message]
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