| Message ID | f2116377ab65e4b3ece39c32f54ac3eec2fb7d8c.1542362530.git.viresh.kumar@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ARM64: dts: Fix incomplete cooling-maps | expand |
On Fri, Nov 16, 2018 at 03:34:31PM +0530, Viresh Kumar wrote: > Each CPU can (and does) participate in cooling down the system but the > DT only captures a handful of them, normally CPU0, in the cooling maps. > Things work by chance currently as under normal circumstances its the > first CPU of each cluster which is used by the operating systems to > probe the cooling devices. But as soon as this CPU ordering changes and > any other CPU is used to bring up the cooling device, we will start > seeing failures. > > Also the DT is rather incomplete when we list only one CPU in the > cooling maps, as the hardware doesn't have any such limitations. > > Update cooling maps to include all devices affected by individual trip > points. > > Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Thanks, applied for v4.21.
diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi index a79c8d369e0b..3a662df32143 100644 --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi @@ -2878,7 +2878,10 @@ cooling-maps { map0 { trip = <&sensor1_passive>; - cooling-device = <&a57_0 4 4>; + cooling-device = <&a57_0 4 4>, + <&a57_1 4 4>, + <&a57_2 4 4>, + <&a57_3 4 4>; }; }; }; @@ -2904,7 +2907,10 @@ cooling-maps { map0 { trip = <&sensor2_passive>; - cooling-device = <&a57_0 4 4>; + cooling-device = <&a57_0 4 4>, + <&a57_1 4 4>, + <&a57_2 4 4>, + <&a57_3 4 4>; }; }; }; @@ -2930,7 +2936,10 @@ cooling-maps { map0 { trip = <&sensor3_passive>; - cooling-device = <&a57_0 4 4>; + cooling-device = <&a57_0 4 4>, + <&a57_1 4 4>, + <&a57_2 4 4>, + <&a57_3 4 4>; }; }; }; diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi index 1ec6aaa520c1..dd95e937f87a 100644 --- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi @@ -2526,7 +2526,7 @@ cooling-maps { map0 { trip = <&sensor1_passive>; - cooling-device = <&a57_0 5 5>; + cooling-device = <&a57_0 5 5>, <&a57_1 5 5>; }; }; }; @@ -2552,7 +2552,7 @@ cooling-maps { map0 { trip = <&sensor2_passive>; - cooling-device = <&a57_0 5 5>; + cooling-device = <&a57_0 5 5>, <&a57_1 5 5>; }; }; }; @@ -2578,7 +2578,7 @@ cooling-maps { map0 { trip = <&sensor3_passive>; - cooling-device = <&a57_0 5 5>; + cooling-device = <&a57_0 5 5>, <&a57_1 5 5>; }; }; };
Each CPU can (and does) participate in cooling down the system but the DT only captures a handful of them, normally CPU0, in the cooling maps. Things work by chance currently as under normal circumstances its the first CPU of each cluster which is used by the operating systems to probe the cooling devices. But as soon as this CPU ordering changes and any other CPU is used to bring up the cooling device, we will start seeing failures. Also the DT is rather incomplete when we list only one CPU in the cooling maps, as the hardware doesn't have any such limitations. Update cooling maps to include all devices affected by individual trip points. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- arch/arm64/boot/dts/renesas/r8a7795.dtsi | 15 ++++++++++++--- arch/arm64/boot/dts/renesas/r8a7796.dtsi | 6 +++--- 2 files changed, 15 insertions(+), 6 deletions(-)