From: Josua Mayer <josua.m@t-online.de>
To: Andreas Kemnade <andreas@kemnade.info>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Guenter Roeck <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v2 2/2] regulator: Add TPS65185 driver
Date: Sat, 27 Dec 2025 17:33:56 +0100 [thread overview]
Message-ID: <9ab5bb73-6237-4348-a62a-a61af4d4704e@t-online.de> (raw)
In-Reply-To: <20251227-tps65185-submit-v2-2-1882024b8f33@kemnade.info>
Am 27.12.25 um 11:20 schrieb Andreas Kemnade:
> Add a driver for the TPS65185 regulator. Implement handling of the various
> gpio pins. Because the PWRUP (=enable) pin functionality can be achieved
> by just using two bits instead, just ensure that it is set to a stable
> value.
> Implement the pair of symmetric LDOs as a single regulator because they
> share a single voltage set register. As the VCOM regulator sits behind that
> machinery, just define that one as a supply.
> For simplicity, just add the temperature sensor (depending on external NTC)
> directly.
>
> There is a mechanism to measure some kick-back voltage during a defined EPD
> operation, to calibrate the VCOM voltage setting and store that
> non-volatile in the chip to be the power up default setup. That is not
> implemented yet in the driver, but that also means that there is a
> non-factory default value in these registers after power-up.
>
> Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
> ---
> drivers/regulator/Kconfig | 11 ++
> drivers/regulator/Makefile | 1 +
> drivers/regulator/tps65185.c | 454 +++++++++++++++++++++++++++++++++++++++++++
> 3 files changed, 466 insertions(+)
Tested on Kobo Aura (N514).
Tested-by: Josua Mayer <josua.mayer@jm0.eu>
prev parent reply other threads:[~2025-12-27 16:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-27 10:20 [PATCH v2 0/2] regulator: Add TPS65185 Andreas Kemnade
2025-12-27 10:20 ` [PATCH v2 1/2] dt-bindings: regulator: Document TI TPS65185 Andreas Kemnade
2025-12-30 9:08 ` Krzysztof Kozlowski
2025-12-30 9:49 ` Andreas Kemnade
2025-12-30 10:40 ` Krzysztof Kozlowski
2025-12-27 10:20 ` [PATCH v2 2/2] regulator: Add TPS65185 driver Andreas Kemnade
2025-12-27 16:33 ` Josua Mayer [this message]
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