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SubjectRe: [PATCH v5 3/4] ARM: tegra: Add thermal trip points for Jetson TK1
On 09/24/2014 09:41 PM, Eduardo Valentin wrote:
> On Wed, Sep 24, 2014 at 09:34:16PM +0300, Mikko Perttunen wrote:
>> On 09/24/2014 09:32 PM, Eduardo Valentin wrote:
>>> Hello Mikko,
>>>
>>> On Thu, Aug 21, 2014 at 01:17:21PM +0300, Mikko Perttunen wrote:
>>>> This adds critical trip points to the Jetson TK1 device tree.
>>>> The device will do a controlled shutdown when either the CPU, GPU
>>>> or MEM thermal zone reaches 101 degrees Celsius.
>>>>
>>>> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
>>>> ---
>>>> v5: added cooling-maps nodes
>>>>
>>>
>>> OK. But no cooling map entry in it. What was the reason again you don't
>>> need/want to add the maps?
>>
>> There is currently no cooling device to map to.
>
> Not even cpufreq cooling? Is CPUfreq operational in Tegra?

Indeed, it is not currently operational (except on Tegra20). There is a
series for Tegra124 but it needs more work. Not going in during this cycle.

>
>>
>> Mikko
>>
>>>
>>>> arch/arm/boot/dts/tegra124-jetson-tk1.dts | 41 +++++++++++++++++++++++++++++++
>>>> 1 file changed, 41 insertions(+)
>>>>
>>>> diff --git a/arch/arm/boot/dts/tegra124-jetson-tk1.dts b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
>>>> index 0cdb5cf..bcdab7f 100644
>>>> --- a/arch/arm/boot/dts/tegra124-jetson-tk1.dts
>>>> +++ b/arch/arm/boot/dts/tegra124-jetson-tk1.dts
>>>> @@ -1876,4 +1876,45 @@
>>>> <&tegra_car TEGRA124_CLK_EXTERN1>;
>>>> clock-names = "pll_a", "pll_a_out0", "mclk";
>>>> };
>>>> +
>>>> + thermal-zones {
>>>> + cpu {
>>>> + trips {
>>>> + trip@0 {
>>>> + temperature = <101000>;
>>>> + hysteresis = <0>;
>>>> + type = "critical";
>>>> + };
>>>> + };
>>>> +
>>>> + cooling-maps {
>>>> + };
>>>> + };
>>>> +
>>>> + mem {
>>>> + trips {
>>>> + trip@0 {
>>>> + temperature = <101000>;
>>>> + hysteresis = <0>;
>>>> + type = "critical";
>>>> + };
>>>> + };
>>>> +
>>>> + cooling-maps {
>>>> + };
>>>> + };
>>>> +
>>>> + gpu {
>>>> + trips {
>>>> + trip@0 {
>>>> + temperature = <101000>;
>>>> + hysteresis = <0>;
>>>> + type = "critical";
>>>> + };
>>>> + };
>>>> +
>>>> + cooling-maps {
>>>> + };
>>>> + };
>>>> + };
>>>> };
>>>> --
>>>> 1.8.1.5
>>>>
>>> --
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>>>
>>



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