Thread (28 messages) 28 messages, 7 authors, 2020-02-07

Re: [PATCH v8 0/7] add thermal sensor driver for A64, A83T, H3, H5, H6, R40

From: Amit Kucheria <hidden>
Date: 2020-02-06 19:26:54
Also in: linux-arm-kernel, linux-pm, lkml

On Thu, Feb 6, 2020 at 9:27 PM Ondřej Jirman [off-list ref] wrote:
Hi Amit,

On Thu, Feb 06, 2020 at 07:43:59PM +0530, Amit Kucheria wrote:
quoted
Hi Vasily,

For this entire series, the DTS files don't contain any trip points.
Did I miss some other series?

At a minimum, you should add some "hot" or "critical" trip points
since then don't require a cooling-map with throttling actions. If you
have "passive" trip points, then you need to provide cooling-maps.

Since this series has been merged, could you please follow up with a
fixup series to add the trip points?
I don't think lack of trip points causes runtime issues. Or does it? I planned
to send update with some trip points and cooling maps for 5.7 merge window.
Is this acceptable?
Yes, I think that would be fine.
If not, I can send a patch that adds:

+ trips {
+         cpu-very-hot {
+                 temperature = <100000>;
+                 hysteresis = <0>;
+                 type = "critical";
+         };
+ };

and

+ trips {
+         gpu-very-hot {
+                 temperature = <100000>;
+                 hysteresis = <0>;
+                 type = "critical";
+         };
+ };

everywhere where appropriate. Though that will make rebase of out of
tree patches that already have a more complicated setup to be sent for the next
merge window a bit tedious.
Right, don't do that.
thank you,
        Ondrej
quoted
Regards,
Amit
p.s. We should catch all this automatically, I'll send out yaml
bindings for the thermal framework soon that should catch this stuff.
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