linux-kernel - Re: [PATCH v2 0/7] Introduce STMFX I2C Multi-Function eXpander

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Date:   Wed, 19 Sep 2018 12:50:44 -0700
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Amelie Delaunay <amelie.delaunay@...com>
Cc:     Lee Jones <lee.jones@...aro.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexandre TORGUE <alexandre.torgue@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v2 0/7] Introduce STMFX I2C Multi-Function eXpander

On Wed, Sep 19, 2018 at 6:28 AM Amelie Delaunay <amelie.delaunay@...com> wrote:

> This series adds support for STMicroelectronics Multi-Function eXpander
> (STMFX), used on some STM32 discovery and evaluation boards.
>
> STMFX is an STM32L152 slave controller whose firmware embeds the following
> features:
> - I/O expander (16 GPIOs + 8 extra if the other features are not enabled),
> - resistive touchscreen controller,
> - IDD measurement.
>
> I2C stuff and chip initialization is based on an MFD parent driver, which
> registers a pinctrl MFD child.
>
> ---
> Changes in v2:
> - move to MFD parent driver for i2c stuff and chip initialization
> - improve regmap configuration
> - take advantage of the use of gpio-ranges

I'm very happy with this version, and Lee can merge it into the MFD tree
with my Reviewed-by tags once he is happy with the MFD core.

I hope the DT people are as happy as me so we can merge this for v4.20,
the GPIO/pinctrl parts are definately finished. any remaining snags can
be fixed in-tree.

Yours,
Linus Walleij