lkml.org 
[lkml]   [2018]   [Nov]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 6/6] ARM: dts: uniphier: Add all CPUs in cooling maps
On Fri, Nov 16, 2018 at 7:02 PM Viresh Kumar <viresh.kumar@linaro.org> 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>


Applied to linux-uniphier.
Thanks.

> ---
> arch/arm/boot/dts/uniphier-pxs2.dtsi | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/uniphier-pxs2.dtsi b/arch/arm/boot/dts/uniphier-pxs2.dtsi
> index 8d20e9548e39..06a049f6edf8 100644
> --- a/arch/arm/boot/dts/uniphier-pxs2.dtsi
> +++ b/arch/arm/boot/dts/uniphier-pxs2.dtsi
> @@ -141,8 +141,10 @@
> cooling-maps {
> map {
> trip = <&cpu_alert>;
> - 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>;
> };
> };
> };
> --
> 2.19.1.568.g152ad8e3369a
>


--
Best Regards
Masahiro Yamada

\
 
 \ /
  Last update: 2018-11-26 16:50    [W:0.070 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site