linux-kernel - [PATCH 2/3] arm64: dts: exynos: gs101: align reboot and poweroff writes with downstream

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Message-Id: <20250206-gs101-renppt-dts-v1-2-cdfe993fb3c5@linaro.org>
Date: Thu, 06 Feb 2025 13:08:19 +0000
From: André Draszik <andre.draszik@...aro.org>
To: Peter Griffin <peter.griffin@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>
Cc: Will McVicker <willmcvicker@...gle.com>, kernel-team@...roid.com, 
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 2/3] arm64: dts: exynos: gs101: align reboot and poweroff
 writes with downstream

For power off, downstream only clears bit 8 and leaves all other bits
untouched, whereas this here ends up setting bit 8 and clearing all
others, due to how sysconf-poweroff parses the DT.

For reboot, downstream writes 0x00000002 whereas this here ends up
setting bit 1 only and leaving all others untouched.

I noticed this discrepancy while debugging some reboot related
differences between up- and downstream and it's useful to align the
behaviour here.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index e78dcd506a5c..4f45bfeb33c0 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -1401,13 +1401,13 @@ pmu_system_controller: system-controller@...60000 {
 			poweroff: syscon-poweroff {
 				compatible = "syscon-poweroff";
 				offset = <0x3e9c>; /* PAD_CTRL_PWR_HOLD */
-				mask = <0x100>; /* reset value */
+				mask = <0x00000100>;
+				value = <0x0>;
 			};
 
 			reboot: syscon-reboot {
 				compatible = "syscon-reboot";
 				offset = <0x3a00>; /* SYSTEM_CONFIGURATION */
-				mask = <0x2>; /* SWRESET_SYSTEM */
 				value = <0x2>; /* reset value */
 			};
 		};

-- 
2.48.1.362.g079036d154-goog