linux-kernel - [PATCH 7/7] ARM:mstar: Add reboot support

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Message-Id: <20200726043948.1357573-8-daniel@0x0f.com>
Date:   Sun, 26 Jul 2020 13:39:48 +0900
From:   Daniel Palmer <daniel@...f.com>
To:     soc@...nel.org
Cc:     arnd@...db.de, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Daniel Palmer <daniel@...f.com>
Subject: [PATCH 7/7] ARM:mstar: Add reboot support

MStar v7 SoCs support reset by writing a magic value to a register
in the "pmsleep" area.

This adds a node for using the syscon reboot driver to trigger a reset.

Signed-off-by: Daniel Palmer <daniel@...f.com>
---
 arch/arm/boot/dts/mstar-v7.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/boot/dts/mstar-v7.dtsi b/arch/arm/boot/dts/mstar-v7.dtsi
index c8b192569d05..7ac7e649189f 100644
--- a/arch/arm/boot/dts/mstar-v7.dtsi
+++ b/arch/arm/boot/dts/mstar-v7.dtsi
@@ -78,6 +78,13 @@ pmsleep: syscon@...0 {
 				reg = <0x1c00 0x100>;
 			};
 
+			reboot {
+				compatible = "syscon-reboot";
+				regmap = <&pmsleep>;
+				offset = <0xb8>;
+				mask = <0x79>;
+			};
+
 			l3bridge: l3bridge@...400 {
 				compatible = "mstar,l3bridge";
 				reg = <0x204400 0x200>;
-- 
2.27.0