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    Subject[PATCH 2/2] arm64: dts: hi6220: Add all CPUs in cooling maps
    Date
    Each CPU can (and does) participate in cooling down the system but the
    DT only captures the CPU0 in the cooling maps. Things work by chance as
    under normal circumstances its the CPU0 which is used by the operating
    systems to probe the cooling devices. But as soon as that ordering
    changes and any other CPU is used to bring up the cooling device, we
    will start seeing errors.

    On the other hand, the hardware is partially defined in DT in these
    cases and we must do a better job by capturing all devices.

    Add all devices (CPUs here) in the cooling maps which are also affected
    by the trip point.

    Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
    ---
    arch/arm64/boot/dts/hisilicon/hi6220.dtsi | 9 ++++++++-
    1 file changed, 8 insertions(+), 1 deletion(-)

    diff --git a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
    index 247024df714f..919d36b91bf3 100644
    --- a/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
    +++ b/arch/arm64/boot/dts/hisilicon/hi6220.dtsi
    @@ -886,7 +886,14 @@
    cooling-maps {
    map0 {
    trip = <&target>;
    - cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
    + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu4 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu5 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu6 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
    + <&cpu7 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
    };
    };
    };
    --
    2.18.0.rc1.242.g61856ae69a2c
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