From: Maxime Ripard <maxime@cerno.tech>
To: Evgeny Boger <boger@wirenboard.com>
Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Quentin Schulz <foss@0leil.net>,
linux-sunxi@lists.linux.dev
Subject: Re: [PATCH 1/2] iio:adc:axp20x: add support for NTC thermistor
Date: Mon, 22 Nov 2021 11:48:28 +0100 [thread overview]
Message-ID: <20211122104828.uewr6cj6ynkut5lv@gilmour> (raw)
In-Reply-To: <20211118141233.247907-2-boger@wirenboard.com>
On Thu, Nov 18, 2021 at 05:12:32PM +0300, Evgeny Boger wrote:
> Most AXPxxx-based reference designs place a 10k NTC thermistor on a
> TS pin. When appropriately configured, AXP PMICs will inject fixed
> current (80uA by default) into TS pin and measure the voltage across a
> thermistor. The PMIC itself will by default compare this voltage with
> predefined thresholds and disable battery charging whenever
> the battery is too hot or too cold.
>
> Alternatively, the TS pin can be configured as general-purpose
> ADC input. This mode is not supported by the driver.
>
> This patch allows reading the voltage on the TS pin. It can be then
> either processed by userspace or used by kernel consumer like hwmon
> ntc thermistor driver.
>
> Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Maxime
next prev parent reply other threads:[~2021-11-22 10:48 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-18 14:12 [PATCH 0/2] iio: adc: axp20x: add support for NTC thermistor Evgeny Boger
2021-11-18 14:12 ` [PATCH 1/2] iio:adc:axp20x: " Evgeny Boger
2021-11-22 10:48 ` Maxime Ripard [this message]
2021-12-01 10:11 ` Quentin Schulz
2021-12-01 10:42 ` Quentin Schulz
2021-11-18 14:12 ` [PATCH 2/2] dt-bindings: iio: adc: document TS voltage in AXP PMICs Evgeny Boger
2021-11-22 10:49 ` Maxime Ripard
2021-11-22 11:17 ` Evgeny Boger
2021-11-22 11:35 ` Samuel Holland
2021-11-22 11:51 ` Evgeny Boger
2021-11-29 23:58 ` Evgeny Boger
2021-12-01 10:03 ` Quentin Schulz
2021-12-01 11:02 ` Quentin Schulz
2021-12-01 15:45 ` Evgeny Boger
2021-12-03 20:47 ` Sebastian Reichel
2021-12-04 15:26 ` Jonathan Cameron
2021-12-05 1:02 ` Linus Walleij
2021-12-05 10:50 ` Evgeny Boger
2021-12-05 19:46 ` Linus Walleij
2021-11-29 23:10 ` Rob Herring
2021-12-04 15:28 ` Jonathan Cameron
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