Thread (28 messages) 28 messages, 5 authors, 2017-09-24

[PATCH v4 6/6] ARM: sun8i: h3: add partial CPU thermal zone

From: jic23@kernel.org (Jonathan Cameron)
Date: 2017-09-16 22:17:39
Also in: linux-devicetree, linux-iio, lkml

On Sat, 16 Sep 2017 12:05:49 +0200
Quentin Schulz [off-list ref] wrote:
Hi Icenowy,

On 14/09/2017 16:52, Icenowy Zheng wrote:
quoted
Because of the restriction of the OF thermal framework, the thermal
sensor will fail to probe if the thermal zone doesn't exist.
  
Oh no, that's not good.

We discussed about it on IRC and I even proposed a patch for it, telling
you I would post it on the mailing list soon after. Of course, I forgot
and you definitely should have yelled at me for not doing it :)

I won't be able to test the patch soon. I can send it to you so that you
can test it and integrate it in your patch series so it won't block you.
Otherwise, we'll have to wait for a week or two for me to test it.

Thanks and sorry for forgetting to post the patch you need,
Quentin
Other this outstanding issue I'm happy with the series, so hopefully
with Quentin's patch added we should be good to merge this one.

Jonathan
quoted
Add a partial thermal zone which claims the H3 THS as the thermal sensor.

The cooling device (CPU DVFS) is still not added as it's not ready, and
the trip points are also not added yet.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
 arch/arm/boot/dts/sun8i-h3.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
index 3220da3ad790..687c6457d214 100644
--- a/arch/arm/boot/dts/sun8i-h3.dtsi
+++ b/arch/arm/boot/dts/sun8i-h3.dtsi
@@ -89,6 +89,15 @@
 		};
 	};
 
+	thermal-zones {
+		cpu-thermal {
+			/* milliseconds */
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&ths>;
+		};
+	};
+
 	timer {
 		compatible = "arm,armv7-timer";
 		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
  
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