From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Jonathan Cameron <jic23@kernel.org>,
lars@metafoo.de, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, matthias.bgg@gmail.com, lee@kernel.org,
andy@kernel.org, nuno.sa@analog.com, bigunclemax@gmail.com,
dlechner@baylibre.com, marius.cristea@microchip.com,
marcelo.schmitt@analog.com, fr0st61te@gmail.com,
mitrutzceclan@gmail.com, mike.looijmans@topic.nl,
marcus.folkesson@gmail.com, linux-iio@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, kernel@collabora.com
Subject: Re: [PATCH v1 2/4] iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC
Date: Tue, 4 Jun 2024 13:57:54 +0200 [thread overview]
Message-ID: <630d943e-3bf3-46ab-b3b8-cc44a86cab64@collabora.com> (raw)
In-Reply-To: <CAHp75Vf5a8VVyOXQRt9P1QnM6GHZ3rLuvnBF63H_83QBHOTJ9w@mail.gmail.com>
Il 04/06/24 12:55, Andy Shevchenko ha scritto:
> On Tue, Jun 4, 2024 at 12:42 PM AngeloGioacchino Del Regno
> <angelogioacchino.delregno@collabora.com> wrote:
>> Il 02/06/24 12:11, Jonathan Cameron ha scritto:
>>> On Thu, 30 May 2024 11:34:08 +0200
>>> AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> wrote:
>
> ...
>
>>> What are IMP channels?
>>
>> Honestly? Well, it's called like that. I don't have any clear description of that
>> and not even datasheets are unrolling the meaning of "IMP". So.. I don't know.
>>
>> What I know is what I wrote in the driver, and this is:
>> * IMP has IBAT and VBAT ADCs
>> * It needs different handling from the other ADCs, as shown.
>>
>> ...and nothing else :-(
>
> I could speculate with confidence that this means IMPedance (since it's ADC).
>
> From MTK6329 datasheet:
> "The hardware also includes necessary modes to allow for simultaneous
> current and voltage measurement
> which can be utilized to estimate the battery impedance."
> And googling in vendor trees also suggests the same.
>
That does make a lot of sense. Thanks for that, I don't have the 6329 datasheet.
Great, one more piece added to the puzzle!
Cheers,
Angelo
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next prev parent reply other threads:[~2024-06-04 11:58 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-30 9:34 [PATCH v1 0/4] MediaTek MT6357/8/9 PMIC Auxiliary ADC support AngeloGioacchino Del Regno
2024-05-30 9:34 ` [PATCH v1 1/4] dt-bindings: iio: adc: Add MediaTek MT6359 PMIC AUXADC AngeloGioacchino Del Regno
2024-06-01 15:32 ` Krzysztof Kozlowski
2024-06-04 8:55 ` AngeloGioacchino Del Regno
2024-06-04 9:38 ` Krzysztof Kozlowski
2024-06-04 12:24 ` AngeloGioacchino Del Regno
2024-06-02 9:40 ` Jonathan Cameron
2024-06-04 9:04 ` AngeloGioacchino Del Regno
2024-06-06 19:40 ` Jonathan Cameron
2024-05-30 9:34 ` [PATCH v1 2/4] iio: adc: Add support for MediaTek MT6357/8/9 Auxiliary ADC AngeloGioacchino Del Regno
2024-05-30 13:34 ` Andy Shevchenko
2024-06-04 10:38 ` AngeloGioacchino Del Regno
2024-06-04 11:05 ` Andy Shevchenko
2024-06-04 11:56 ` AngeloGioacchino Del Regno
2024-06-02 10:11 ` Jonathan Cameron
2024-06-04 9:42 ` AngeloGioacchino Del Regno
2024-06-04 10:55 ` Andy Shevchenko
2024-06-04 11:20 ` Andy Shevchenko
2024-06-04 11:57 ` AngeloGioacchino Del Regno [this message]
2024-06-06 19:51 ` Jonathan Cameron
2024-05-30 9:34 ` [PATCH v1 3/4] mfd: mt6397-core: Add support for AUXADCs on MT6357/58/59 PMICs AngeloGioacchino Del Regno
2024-05-31 17:05 ` (subset) " Lee Jones
2024-05-30 9:34 ` [PATCH v1 4/4] arm64: dts: mediatek: Add ADC node on MT6357, MT6358, MT6359 PMICs AngeloGioacchino Del Regno
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