diff mbox series

[4.19,122/346] arm64: dts: exynos: Correct psci compatible used on Exynos7

Message ID 20201228124925.695189130@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH Dec. 28, 2020, 12:47 p.m. UTC 
From: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>

[ Upstream commit e1e47fbca668507a81bb388fcae044b89d112ecc ]

It's not possible to reboot or poweroff Exynos7420 using PSCI. Instead
we need to use syscon reboot/poweroff drivers, like it's done for other
Exynos SoCs. This was confirmed by checking vendor source and testing it
on Samsung Galaxy S6 device based on this SoC.

To be able to use custom restart/poweroff handlers instead of PSCI
functions, we need to correct psci compatible. This also requires us to
provide function ids for CPU_ON and CPU_OFF.

Fixes: fb026cb65247 ("arm64: dts: Add reboot node for exynos7")
Fixes: b9024cbc937d ("arm64: dts: Add initial device tree support for exynos7")
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Link: https://lore.kernel.org/r/20201107133926.37187-2-pawel.mikolaj.chmiel@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/exynos/exynos7.dtsi | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index 38a07d9763a3f..5c5e57026c275 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -62,8 +62,10 @@ 
 	};
 
 	psci {
-		compatible = "arm,psci-0.2";
+		compatible = "arm,psci";
 		method = "smc";
+		cpu_off = <0x84000002>;
+		cpu_on = <0xC4000003>;
 	};
 
 	soc: soc {