Re: [PATCH v5 3/4] ARM: tegra: Add thermal trip points for Jetson TK1
From: Mikko Perttunen
Date: Wed Sep 24 2014 - 14:44:07 EST
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@xxxxxxxxxx>
---
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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