linux-kernel - Re: [PATCH v2 4/5] arm64: dts: rockchip: add thermal nodes for rk3328 SoC

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Message-ID: <f0c7ab33-1b7b-8b9d-fd20-aa84001014cc@rock-chips.com>
Date:   Fri, 11 Aug 2017 17:46:55 +0800
From:   "rocky.hao" <rocky.hao@...k-chips.com>
To:     Caesar Wang <wxt@...k-chips.com>, rui.zhang@...el.com,
        edubezval@...il.com, heiko@...ech.de, robh+dt@...nel.org,
        mark.rutland@....com, catalin.marinas@....com, will.deacon@....com
Cc:     huangtao@...k-chips.com, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org, shawn.lin@...k-chips.com,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        cl@...k-chips.com, william.wu@...k-chips.com,
        jay.xu@...k-chips.com, xxx@...k-chips.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 4/5] arm64: dts: rockchip: add thermal nodes for rk3328
 SoC

Hi Caesar,
Thanks for your comments.

Best Regards,
Rocky

在 2017/8/11 14:44, Caesar Wang 写道:
> 在 2017年08月04日 16:06, Rocky Hao 写道:
>> add thermal zone and dynamic CPU power coefficients for rk3328
>>
>> Signed-off-by: Rocky Hao <rocky.hao@...k-chips.com>
>> ---
>> Change in v2:
>> - remove gerrit Change-Id
>>
>>   arch/arm64/boot/dts/rockchip/rk3328.dtsi | 43 
>> ++++++++++++++++++++++++++++++++
>>   1 file changed, 43 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi 
>> b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
>> index 186fb93fdffd..68829f808320 100644
>> --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
>> +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
>> @@ -47,6 +47,7 @@
>>   #include <dt-bindings/pinctrl/rockchip.h>
>>   #include <dt-bindings/power/rk3328-power.h>
>>   #include <dt-bindings/soc/rockchip,boot-mode.h>
>> +#include <dt-bindings/thermal/thermal.h>
>>   / {
>>       compatible = "rockchip,rk3328";
>> @@ -74,6 +75,8 @@
>>               compatible = "arm,cortex-a53", "arm,armv8";
>>               reg = <0x0 0x0>;
>>               clocks = <&cru ARMCLK>;
>> +            #cooling-cells = <2>; /* min followed by max */
>> +            dynamic-power-coefficient = <120>;
>>               enable-method = "psci";
>>               next-level-cache = <&l2>;
>>           };
>> @@ -83,6 +86,7 @@
>>               compatible = "arm,cortex-a53", "arm,armv8";
>>               reg = <0x0 0x1>;
>>               clocks = <&cru ARMCLK>;
>> +            dynamic-power-coefficient = <120>;
>>               enable-method = "psci";
>>               next-level-cache = <&l2>;
>>           };
>> @@ -92,6 +96,7 @@
>>               compatible = "arm,cortex-a53", "arm,armv8";
>>               reg = <0x0 0x2>;
>>               clocks = <&cru ARMCLK>;
>> +            dynamic-power-coefficient = <120>;
>>               enable-method = "psci";
>>               next-level-cache = <&l2>;
>>           };
>> @@ -101,6 +106,7 @@
>>               compatible = "arm,cortex-a53", "arm,armv8";
>>               reg = <0x0 0x3>;
>>               clocks = <&cru ARMCLK>;
>> +            dynamic-power-coefficient = <120>;
>>               enable-method = "psci";
>>               next-level-cache = <&l2>;
>>           };
>> @@ -308,6 +314,43 @@
>>           interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
>>       };
>> +    thermal-zones {
>> +        soc_thermal: soc-thermal {
>> +            polling-delay-passive = <20>; /* milliseconds */
>> +            polling-delay = <1000>; /* milliseconds */
>> +            sustainable-power = <1000>; /* milliwatts */
>> +
>> +            thermal-sensors = <&tsadc 0>;
>> +
>> +            trips {
>> +                threshold: trip-point0 {
>> +                    temperature = <70000>; /* millicelsius */
>> +                    hysteresis = <2000>; /* millicelsius */
>> +                    type = "passive";
>> +                };
>> +                target: trip-point1 {
>> +                    temperature = <85000>; /* millicelsius */
>> +                    hysteresis = <2000>; /* millicelsius */
>> +                    type = "passive";
>> +                };
>> +                soc_crit: soc-crit {
>> +                    temperature = <95000>; /* millicelsius */
>> +                    hysteresis = <2000>; /* millicelsius */
> 
> The document had already described, maybe we should remove the 
> millicelsius/milliseconds/milliwatts here.
It is ok for me.
>> +                    type = "critical";
>> +                };
>> +            };
>> +
>> +            cooling-maps {
>> +                map0 {
>> +                    trip = <&target>;
>> +                    cooling-device = <&cpu0 THERMAL_NO_LIMIT 
>> THERMAL_NO_LIMIT>;
>> +                    contribution = <4096>;
>> +                };
>> +            };
>> +        };
>> +
>> +    };
>> +
>>       tsadc: tsadc@...50000 {
>>           compatible = "rockchip,rk3328-tsadc";
>>           reg = <0x0 0xff250000 0x0 0x100>;
> 
> 
> 
>