linux-kernel - Re: [PATCH] arm64: dts: meson: add thermal zones to gxl-s905x-khadas-vim

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Date:   Tue, 3 Mar 2020 15:41:28 +0100
From:   Neil Armstrong <narmstrong@...libre.com>
To:     Christian Hewitt <christianshewitt@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Kevin Hilman <khilman@...libre.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Nick Xie <nick@...das.com>
Subject: Re: [PATCH] arm64: dts: meson: add thermal zones to
 gxl-s905x-khadas-vim

Hi,

On 28/02/2020 07:12, Christian Hewitt wrote:
> Add thermal zones to the VIM1 board, copying the zone config from the
> existing VIM2 board.
> 
> Suggested-by: Nick Xie <nick@...das.com>
> Signed-off-by: Christian Hewitt <christianshewitt@...il.com>
> ---
>  .../dts/amlogic/meson-gxl-s905x-khadas-vim.dts     | 50 ++++++++++++++++++++++
>  1 file changed, 50 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts
> index 440bc23..2c198c4 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-khadas-vim.dts
> @@ -6,6 +6,7 @@
>  /dts-v1/;
>  
>  #include <dt-bindings/input/input.h>
> +#include <dt-bindings/thermal/thermal.h>
>  
>  #include "meson-gxl-s905x-p212.dtsi"
>  
> @@ -63,6 +64,39 @@
>  			};
>  		};
>  	};
> +
> +	thermal-zones {
> +		cpu-thermal {
> +			polling-delay-passive = <250>; /* milliseconds */
> +			polling-delay = <1000>; /* milliseconds */
> +
> +			thermal-sensors = <&scpi_sensors 0>;
> +
> +			trips {
> +				cpu_alert0: cpu-alert0 {
> +					temperature = <70000>; /* millicelsius */
> +					hysteresis = <2000>; /* millicelsius */
> +					type = "active";
> +				};
> +
> +				cpu_alert1: cpu-alert1 {
> +					temperature = <80000>; /* millicelsius */
> +					hysteresis = <2000>; /* millicelsius */
> +					type = "passive";
> +				};
> +			};
> +
> +			cooling-maps {
> +				map0 {
> +					trip = <&cpu_alert1>;
> +					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>;
> +				};
> +			};
> +		};
> +	};
>  };
>  
>  &cec_AO {
> @@ -72,6 +106,22 @@
>  	hdmi-phandle = <&hdmi_tx>;
>  };
>  
> +&cpu0 {
> +	#cooling-cells = <2>;
> +};
> +
> +&cpu1 {
> +	#cooling-cells = <2>;
> +};
> +
> +&cpu2 {
> +	#cooling-cells = <2>;
> +};
> +
> +&cpu3 {
> +	#cooling-cells = <2>;
> +};
> +
>  &hdmi_tx {
>  	status = "okay";
>  	pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
> 

Following the g12a/g12b/sm1 work, this should go into the meson-gx.dtsi instead, with some bits in meson-gxm.dtsi
to handle the second spu cluster.

Neil