linux-kernel - lm-senser can't detect thermal on thermal

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Date:	Thu, 12 May 2016 08:09:13 +0000
From:	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:	Zhang Rui <rui.zhang@...el.com>,
	Linux-Kernel <linux-kernel@...r.kernel.org>,
	Eduardo Valentin <edubezval@...il.com>,
	<linux-pm@...r.kernel.org>
CC:	Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
	Hiep Cao Minh <cm-hiep@...so.co.jp>,
	shimoda <yoshihiro.shimoda.uh@...esas.com>
Subject: lm-senser can't detect thermal on thermal_zone


Hi Zhang, Eduardo

Our platform now is using thermal_zone, but lm-senser became no longer working.
It works on non thermal_zone. we can get current thermal from
/sys/class/thermal/thermal_zone0 on thermal_zone.
What does lm-senser is doing ? and why it doesn't work on thermal_zone ??

	-- thermal_zone enable patch --

	a8b805f3606f7af7f2b44763d3d6cf05f7c15afd
	(ARM: dts: r8a7790: enable to use thermal-zone)

	-- lm-senser error on thermal-zone ----

	> sensors
	No sensors found!
	Make sure you loaded all the kernel drivers you need.
	Try sensors-detect to find out which these are.

	-- thermal-zone / non thermal-zone situation --

	non thermal-zon
	  sensor command: OK
	  read from /sys/class/thermal/thermal_zone0 : OK

	thermal-zon
	  sensor command: NG
	  read from /sys/class/thermal/thermal_zone0 : OK