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Date: Mon, 28 Dec 2020 13:47:21 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Paweł Chmiel <pawel.mikolaj.chmiel@...il.com>, Krzysztof Kozlowski <krzk@...nel.org>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 4.19 122/346] arm64: dts: exynos: Correct psci compatible used on Exynos7 From: Paweł Chmiel <pawel.mikolaj.chmiel@...il.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@...il.com> Link: https://lore.kernel.org/r/20201107133926.37187-2-pawel.mikolaj.chmiel@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/arm64/boot/dts/exynos/exynos7.dtsi | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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 { -- 2.27.0
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