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Subject: Re: [PATCH] thermal: brcmstb: enable hwmon
To:     Chen-Yu Tsai <wens@kernel.org>, Markus Mayer <mmayer@broadcom.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Zhang Rui <rui.zhang@intel.com>,
        Eduardo Valentin <edubezval@gmail.com>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Amit Kucheria <amit.kucheria@verdurent.com>
Cc:     Chen-Yu Tsai <wens@csie.org>,
        bcm-kernel-feedback-list@broadcom.com,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-pm@vger.kernel.org
References: <20191030163807.17817-1-wens@kernel.org>
From:   Stefan Wahren <wahrenst@gmx.net>
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Message-ID: <91017889-2ae7-d467-eed3-6d3b2bb130b9@gmx.net>
Date:   Thu, 31 Oct 2019 14:08:36 +0100
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Hi Chen-Yu,

Am 30.10.19 um 17:38 schrieb Chen-Yu Tsai:
> From: Chen-Yu Tsai <wens@csie.org>
>
> By defaul of-based thermal driver do not have hwmon entries registered.=

>
> Do this explicitly so users can use standard hwmon interfaces and tools=

> to read the temperature.
>
> This is based on similar changes for bcm2835_thermal in commit
> d56c19d07e0b ("thermal: bcm2835: enable hwmon explicitly").
>
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>
> This patch was only compile tested. A similar patch [1] was submitted t=
o
> the downstream kernel, which I did build and actually run on a Raspberr=
y
> Pi 4.

just a note: from my understanding [2] the brcmstb_thermal isn't the
right driver for BCM2711. Please consider the current downstream
solution for BCM2711 support as a quick hack to avoid writing a new
thermal driver. But must confess that i didn't test Florian's recent
changes yet.

Regards
Stefan

[2] -
https://github.com/raspberrypi/linux/issues/3101#issuecomment-527554223

>
> This one for mainline is much simpler, as it does not need to deal with=

> the error path or device removal, due to the use of devres.
>
>  [1] https://github.com/raspberrypi/linux/pull/3307
>
> ---
>  drivers/thermal/broadcom/brcmstb_thermal.c | 8 ++++++++
>  1 file changed, 8 insertions(+)