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    Subject[PATCH 4.14 079/242] arm64: dts: exynos: Correct psci compatible used on Exynos7
    Date
    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 --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
    index 9a3fbed1765af..875297a470dab 100644
    --- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
    +++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
    @@ -65,8 +65,10 @@
    };

    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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