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From:   Francesco Dolcini <francesco.dolcini@toradex.com>
To:     Rob Herring <robh+dt@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Viresh Kumar <viresh.kumar@linaro.org>,
        Matthias Brugger <matthias.bgg@gmail.com>
Cc:     Francesco Dolcini <francesco.dolcini@toradex.com>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
        Marcel Ziswiler <marcel.ziswiler@toradex.com>,
        Denys Drozdov <denys.drozdov@toradex.com>,
        Stefan Agner <stefan@agner.ch>
Subject: [PATCH v2 0/2] Enable i.MX7 SOLO temperature sensor
Date:   Mon, 24 Jan 2022 09:28:01 +0100
Message-Id: <20220124082803.94286-1-francesco.dolcini@toradex.com>
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To be able to read the T junction on i.MX CPU the imx-cpufreq-dt needs to be
loaded, however this is currently not the case for i.MX7S given that it does
have only one operating frequency.

Add "fsl,imx7s" to cpufreq-dt-platdev blocklist and a single frequency
operating point to the CPU.

With that it is now possible to correctly read the CPU T junction.

Tested on Toradex Colibri iMX7S

[    6.232577] imx-cpufreq-dt imx-cpufreq-dt: cpu speed grade 0 mkt segment 1 supported-hw 0x1 0x2
...
[    6.880624] imx_thermal 30360000.anatop:tempmon: Extended Commercial CPU temperature grade - max:105C critical:100C passive:95C

root@colibri-imx7-02983025:~# cat /sys/class/thermal/thermal_zone0/temp 
38000

v2:
 - removed empty new line
 - rebased and tested on v5.17-rc1


Denys Drozdov (1):
  ARM: dts: imx7s: Define operating points table for cpufreq

Stefan Agner (1):
  cpufreq: Add i.MX7S to cpufreq-dt-platdev blocklist

 arch/arm/boot/dts/imx7s.dtsi         | 16 ++++++++++++++++
 drivers/cpufreq/cpufreq-dt-platdev.c |  1 +
 2 files changed, 17 insertions(+)

-- 
2.25.1