linux-kernel - Re: [PATCH v12 2/2] mfd: max597x: Add support for MAX5970 and MAX5978

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Date:   Wed, 15 Mar 2023 17:46:34 +0000
From:   Lee Jones <lee@...nel.org>
To:     Naresh Solanki <naresh.solanki@...ements.com>
Cc:     Patrick Rudolph <patrick.rudolph@...ements.com>,
        Marcello Sylvester Bauer <sylv@...v.io>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 2/2] mfd: max597x: Add support for MAX5970 and MAX5978

On Tue, 07 Mar 2023, Naresh Solanki wrote:

> From: Patrick Rudolph <patrick.rudolph@...ements.com>
>
> Implement a regulator driver with IRQ support for fault management.
> Written against documentation [1] and [2] and tested on real hardware.
>
> Every channel has it's own regulator supply nammed 'vss1-supply' and
> 'vss2-supply'. The regulator supply is used to determine the output
> voltage, as the smart switch provides no output regulation.
> The driver requires the 'shunt-resistor-micro-ohms' to be present in
> the devicetree to properly calculate current related values.
>
> You must specify compatible devictree layout:
>
> regulator@3a {
>         reg = <0x3a>;
>         vss1-supply = <&p3v3>;
>         compatible = "maxim,max5978";
>
>         ...
>
>         regulators {
>                 sw0_ref: SW0 {
>                         regulator-compatible = "SW0";
>                         shunt-resistor-micro-ohms = <12000>;
>                         ...
>                 }
>         }
> }
>
> 1: https://datasheets.maximintegrated.com/en/ds/MAX5970.pdf
> 2: https://datasheets.maximintegrated.com/en/ds/MAX5978.pdf
>
> Signed-off-by: Patrick Rudolph <patrick.rudolph@...ements.com>
> Signed-off-by: Marcello Sylvester Bauer <sylv@...v.io>
> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
> ...
> Changes in V12:
> - Use simple_mfd_i2c driver and remove previous implementation.
> - Remove newline
> - Use _MFD_MAX597X_H in header file
> - Successfull build need following patch from regulator:
> https://lore.kernel.org/r/20230216075302.68935-1-Naresh.Solanki@9elements.com
> https://lore.kernel.org/r/20230210163225.1208035-1-Naresh.Solanki@9elements.com
> ---
>  drivers/mfd/Kconfig          | 10 ++++
>  drivers/mfd/simple-mfd-i2c.c | 13 +++++
>  include/linux/mfd/max597x.h  | 96 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 119 insertions(+)
>  create mode 100644 include/linux/mfd/max597x.h

Applied, thanks

--
Lee Jones [李琼斯]