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From: Andreas Kemnade <andreas@kemnade.info>
To: Alistair Francis <alistair@alistair23.me>
Cc: lee.jones@linaro.org, broonie@kernel.org, kernel@pengutronix.de,
	lgirdwood@gmail.com, robh+dt@kernel.org,
	linux-kernel@vger.kernel.org, rui.zhang@intel.com,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	s.hauer@pengutronix.de, linux-hwmon@vger.kernel.org,
	amitk@kernel.org, linux-pm@vger.kernel.org, linux-imx@nxp.com,
	alistair23@gmail.com, shawnguo@kernel.org,
	Rob Herring <robh@kernel.org>
Subject: Re: [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml
Date: Wed, 17 Nov 2021 22:39:50 +0100	[thread overview]
Message-ID: <20211117223950.3a7eaf7a@aktux> (raw)
In-Reply-To: <20211110122948.188683-2-alistair@alistair23.me>

On Wed, 10 Nov 2021 22:29:41 +1000
Alistair Francis <alistair@alistair23.me> wrote:

> Initial support for the Silergy SY7636A Power Management chip
> and regulator.
> 
> Signed-off-by: Alistair Francis <alistair@alistair23.me>
> Reviewed-by: Rob Herring <robh@kernel.org>
> Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
> ---
>  .../bindings/mfd/silergy,sy7636a.yaml         | 79 +++++++++++++++++++
>  1 file changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
> new file mode 100644
> index 000000000000..0566f9498e2f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/silergy,sy7636a.yaml
[...]
> +  regulators:
> +    type: object
> +
> +    properties:
> +      compatible:
> +        const: silergy,sy7636a-regulator
> +
> +      vcom:
> +        type: object
> +        $ref: /schemas/regulator/regulator.yaml#
> +        properties:
> +          regulator-name:
> +            const: vcom
> +
hmm, this is what? If I understand it correctly, vcom means some
voltage for compensation. On other comparable pmics (e.g. TPS65185
which has also a sane public datasheet, MAX17135) I have seen some
methods to measure a voltage while the display is doing something
defined and then program this voltage non-volatile for compensation
during manufacturing.

If I understand the code correctly all the bunch of voltages are
powered up if this one is enabled.
So at least a description should be suitable.

The other comparable PMICs have at least regulators named VCOM, DISPLAY
(controls several regulators, started with delays configured via
registers) and V3P3. MAX17135 source can be found in NXP kernels, 
TPS65185 in Kobo vendor kernels.

So I would expect to see something similar here and a description or at
least not such a misleading name as vcom if it is for some reason not
feasible to separate the regulators.

Regards,
Andreas

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  reply	other threads:[~2021-11-17 21:41 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-10 12:29 [PATCH v15 0/8] Add support for the silergy,sy7636a Alistair Francis
2021-11-10 12:29 ` [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy, sy7636a.yaml Alistair Francis
2021-11-17 21:39   ` Andreas Kemnade [this message]
2021-11-23 13:29     ` Alistair Francis
2021-11-25 22:59       ` [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml Andreas Kemnade
2021-11-29 11:41         ` [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy, sy7636a.yaml Alistair Francis
2021-12-01 22:35           ` [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy,sy7636a.yaml Andreas Kemnade
2021-12-02 11:45             ` [PATCH v15 1/8] dt-bindings: mfd: Initial commit of silergy, sy7636a.yaml Alistair Francis
2021-11-10 12:29 ` [PATCH v15 2/8] mfd: simple-mfd-i2c: Add a Kconfig name Alistair Francis
2021-11-10 12:29 ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy, sy7636a Alistair Francis
2021-11-15 23:10   ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Andreas Kemnade
2021-11-23 12:14     ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy, sy7636a Alistair Francis
2021-11-23 15:39       ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Guenter Roeck
2021-11-24  8:11         ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy, sy7636a Alistair Francis
2021-11-24 19:35         ` [PATCH v15 3/8] mfd: simple-mfd-i2c: Enable support for the silergy,sy7636a Andreas Kemnade
2021-11-24 20:09           ` Guenter Roeck
2021-11-24 22:50             ` Andreas Kemnade
2021-11-24 22:56               ` Guenter Roeck
2021-11-25  7:29                 ` Andreas Kemnade
2021-11-10 12:29 ` [PATCH v15 4/8] regulator: sy7636a: Remove requirement on sy7636a mfd Alistair Francis
2021-11-10 14:39   ` Mark Brown
2021-11-10 12:29 ` [PATCH v15 5/8] hwmon: sy7636a: Add temperature driver for sy7636a Alistair Francis
2021-11-10 15:55   ` Guenter Roeck
2021-11-10 12:29 ` [PATCH v15 6/8] ARM: imx_v6_v7_defconfig: Enable silergy,sy7636a Alistair Francis
2021-11-10 12:29 ` [PATCH v15 7/8] ARM: dts: imx7d: remarkable2: " Alistair Francis
2021-11-10 12:29 ` [PATCH v15 8/8] ARM: dts: imx7d: remarkable2: Enable lcdif Alistair Francis

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