RE: [EXT] Re: [PATCH] arm64: dts: ls1028a: add one more thermal zone support
From: Andy Tang
Date: Mon May 25 2020 - 22:45:12 EST
-----Original Message-----
From: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Sent: 2020å5æ25æ 19:08
To: Andy Tang <andy.tang@xxxxxxx>; shawnguo@xxxxxxxxxx; robh+dt@xxxxxxxxxx; mark.rutland@xxxxxxx; catalin.marinas@xxxxxxx; will.deacon@xxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
Subject: [EXT] Re: [PATCH] arm64: dts: ls1028a: add one more thermal zone support
Caution: EXT Email
On 25/05/2020 09:38, Yuantian Tang wrote:
> There are 2 thermal zones in ls1028a soc. Current dts only includes
> one. This patch adds the other thermal zone node in dts to enable it.
For my personal information, is there a cooling device for the DDR?
A: There is only one cooling device which is used by core-cluster sensor zone.
So there is no cooling device for DDR.
BR,
Andy
> Signed-off-by: Yuantian Tang <andy.tang@xxxxxxx>
> ---
> .../arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 22
> ++++++++++++++++++-
> 1 file changed, 21 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> index 055f114cf848..bc6f0c0f85da 100644
> --- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> +++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
> @@ -129,11 +129,31 @@
> };
>
> thermal-zones {
> - core-cluster {
> + ddr-controller {
> polling-delay-passive = <1000>;
> polling-delay = <5000>;
> thermal-sensors = <&tmu 0>;
>
> + trips {
> + ddr-ctrler-alert {
> + temperature = <85000>;
> + hysteresis = <2000>;
> + type = "passive";
> + };
> +
> + ddr-ctrler-crit {
> + temperature = <95000>;
> + hysteresis = <2000>;
> + type = "critical";
> + };
> + };
> + };
> +
> + core-cluster {
> + polling-delay-passive = <1000>;
> + polling-delay = <5000>;
> + thermal-sensors = <&tmu 1>;
> +
> trips {
> core_cluster_alert: core-cluster-alert {
> temperature = <85000>;
>
--
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