linux-kernel - Re: [RESEND PATCH v16 mfd 8/8] mfd: ocelot: add support for the vsc7512 chip via spi

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Date:   Thu, 8 Sep 2022 10:44:25 +0100
From:   Lee Jones <lee@...nel.org>
To:     Colin Foster <colin.foster@...advantage.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Terry Bowman <terry.bowman@....com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        UNGLinuxDriver@...rochip.com,
        Steen Hegelund <Steen.Hegelund@...rochip.com>,
        Lars Povlsen <lars.povlsen@...rochip.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Russell King <linux@...linux.org.uk>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, katie.morris@...advantage.com
Subject: Re: [RESEND PATCH v16 mfd 8/8] mfd: ocelot: add support for the
 vsc7512 chip via spi

On Mon, 05 Sep 2022, Colin Foster wrote:

> The VSC7512 is a networking chip that contains several peripherals. Many of
> these peripherals are currently supported by the VSC7513 and VSC7514 chips,
> but those run on an internal CPU. The VSC7512 lacks this CPU, and must be
> controlled externally.
> 
> Utilize the existing drivers by referencing the chip as an MFD. Add support
> for the two MDIO buses, the internal phys, pinctrl, and serial GPIO.
> 
> Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
> ---
> 
> v16
>     * Includes fixups:
>     *  ocelot-core.c add includes device.h, export.h, iopoll.h, ioport,h
>     *  ocelot-spi.c add includes device.h, err.h, errno.h, export.h, 
>        mod_devicetable.h, types.h
>     *  Move kconfig.h from ocelot-spi.c to ocelot.h
>     *  Remove unnecessary byteorder.h
>     * Utilize resource_size() function
> 
> v15
>     * Add missed include bits.h
>     * Clean _SIZE macros to make them all the same width (e.g. 0x004)
>     * Remove unnecessary ret = ...; return ret; calls
>     * Utilize spi_message_init_with_transfers() instead of
>       spi_message_add_tail() calls in the bus_read routine
>     * Utilize HZ_PER_MHZ from units.h instead of a magic number
>     * Remove unnecessary err < 0 checks
>     * Fix typos in comments
> 
> v14
>     * Add Reviewed tag
>     * Copyright ranges are now "2021-2022"
>     * 100-char width applied instead of 80
>     * Remove invalid dev_err_probe return
>     * Remove "spi" and "dev" elements from ocelot_ddata struct.
>     Since "dev" is available throughout, determine "ddata" and "spi" from
>     there instead of keeping separate references.
>     * Add header guard in drivers/mfd/ocelot.h
>     * Document ocelot_ddata struct
> 
> ---
>  MAINTAINERS               |   1 +
>  drivers/mfd/Kconfig       |  21 +++
>  drivers/mfd/Makefile      |   3 +
>  drivers/mfd/ocelot-core.c | 161 ++++++++++++++++++++
>  drivers/mfd/ocelot-spi.c  | 299 ++++++++++++++++++++++++++++++++++++++
>  drivers/mfd/ocelot.h      |  49 +++++++
>  6 files changed, 534 insertions(+)
>  create mode 100644 drivers/mfd/ocelot-core.c
>  create mode 100644 drivers/mfd/ocelot-spi.c
>  create mode 100644 drivers/mfd/ocelot.h

Applied, thanks.

-- 
Lee Jones [李琼斯]