From: Guenter Roeck <linux@roeck-us.net>
To: Jon Hunter <jonathanh@nvidia.com>,
Dmitry Osipenko <digetx@gmail.com>,
Jean Delvare <jdelvare@suse.com>
Cc: linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v3 2/4] hwmon: (lm90) Use hwmon_notify_event()
Date: Mon, 21 Feb 2022 08:23:20 -0800 [thread overview]
Message-ID: <ed6fa743-781d-35ed-b002-5621d3f66c91@roeck-us.net> (raw)
In-Reply-To: <20da6f55-682f-4b30-7be7-f425f8efa995@nvidia.com>
On 2/21/22 08:16, Jon Hunter wrote:
>
> On 21/02/2022 16:02, Guenter Roeck wrote:
>
> ...
>
>>> The platform I see this on does use device-tree and it does have a node for the ti,tmp451 device which uses the lm90 device. This platform uses the device-tree source arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts and the tmp451 node is in arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi.
>>>
>>
>> Interesting. It appears that the call to devm_thermal_zone_of_sensor_register()
>> in the hwmon core nevertheless returns -ENODEV which is not handled properly
>> in the hwmon core. I can see a number of reasons for this to happen:
>> - there is no devicetree node for the lm90 device
>> - there is no thermal-zones devicetree node
>> - there is no thermal zone entry in the thermal-zones node which matches
>> the sensor
>
>
> So we definitely have the node for the lm90 device and a thermal-zones node, but I do not see a thermal-sensor node. Maybe this is what we are missing?
>
Correct.
Guenter
next prev parent reply other threads:[~2022-02-21 16:24 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 21:54 [PATCH v3 0/4] HWMON LM90 interrupt fixes and improvements Dmitry Osipenko
2021-06-18 21:54 ` [PATCH v3 1/4] hwmon: (lm90) Don't override interrupt trigger type Dmitry Osipenko
2021-06-18 21:54 ` [PATCH v3 2/4] hwmon: (lm90) Use hwmon_notify_event() Dmitry Osipenko
2022-02-21 12:01 ` Jon Hunter
2022-02-21 12:36 ` Dmitry Osipenko
2022-02-21 12:56 ` Jon Hunter
2022-02-21 12:59 ` Dmitry Osipenko
2022-02-21 13:50 ` Jon Hunter
2022-02-21 13:59 ` Dmitry Osipenko
2022-02-21 15:25 ` Guenter Roeck
2022-02-21 15:43 ` Guenter Roeck
2022-02-21 15:49 ` Jon Hunter
2022-02-21 16:02 ` Guenter Roeck
2022-02-21 16:13 ` Dmitry Osipenko
2022-02-21 16:16 ` Jon Hunter
2022-02-21 16:20 ` Dmitry Osipenko
2022-02-21 16:42 ` Guenter Roeck
2022-02-21 16:22 ` Jon Hunter
2022-02-21 18:38 ` Guenter Roeck
2022-02-21 16:23 ` Guenter Roeck [this message]
2021-06-18 21:54 ` [PATCH v3 3/4] hwmon: (lm90) Unmask hardware interrupt Dmitry Osipenko
2021-06-18 21:54 ` [PATCH v3 4/4] hwmon: (lm90) Disable interrupt on suspend Dmitry Osipenko
2021-06-19 11:10 ` [PATCH v3 0/4] HWMON LM90 interrupt fixes and improvements Guenter Roeck
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