linux-kernel - Re: [RFC v1 net-next 8/8] net: dsa: ocelot: add external ocelot switch control

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Date:   Mon, 12 Sep 2022 11:51:14 +0100
From:   Lee Jones <lee@...nel.org>
To:     Colin Foster <colin.foster@...advantage.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Russell King <linux@...linux.org.uk>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Andrew Lunn <andrew@...n.ch>, UNGLinuxDriver@...rochip.com,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [RFC v1 net-next 8/8] net: dsa: ocelot: add external ocelot
 switch control

On Sun, 11 Sep 2022, Colin Foster wrote:

> Add control of an external VSC7512 chip by way of the ocelot-mfd interface.
> 
> Currently the four copper phy ports are fully functional. Communication to
> external phys is also functional, but the SGMII / QSGMII interfaces are
> currently non-functional.
> 
> Signed-off-by: Colin Foster <colin.foster@...advantage.com>
> ---
> 
> v1 from previous RFC:
>     * Remove unnecessary byteorder and kconfig header includes.
>     * Create OCELOT_EXT_PORT_MODE_SERDES macro to match vsc9959.
>     * Utilize readx_poll_timeout for SYS_RESET_CFG_MEM_INIT.
>     * *_io_res struct arrays have been moved to the MFD files.
>     * Changes to utilize phylink_generic_validate() have been squashed.
>     * dev_err_probe() is used in the probe function.
>     * Make ocelot_ext_switch_of_match static.
>     * Relocate ocelot_ext_ops structure to be next to vsc7512_info, to
>       match what was done in other felix drivers.
>     * Utilize dev_get_regmap() instead of the obsolete
>       ocelot_init_regmap_from_resource() routine.
> 
> ---
>  drivers/mfd/ocelot-core.c           |   3 +
>  drivers/net/dsa/ocelot/Kconfig      |  14 ++
>  drivers/net/dsa/ocelot/Makefile     |   5 +
>  drivers/net/dsa/ocelot/ocelot_ext.c | 254 ++++++++++++++++++++++++++++
>  include/soc/mscc/ocelot.h           |   2 +
>  5 files changed, 278 insertions(+)
>  create mode 100644 drivers/net/dsa/ocelot/ocelot_ext.c
> 
> diff --git a/drivers/mfd/ocelot-core.c b/drivers/mfd/ocelot-core.c
> index aa7fa21b354c..b7b9f6855f74 100644
> --- a/drivers/mfd/ocelot-core.c
> +++ b/drivers/mfd/ocelot-core.c
> @@ -188,6 +188,9 @@ static const struct mfd_cell vsc7512_devs[] = {
>  		.use_of_reg = true,
>  		.num_resources = ARRAY_SIZE(vsc7512_miim1_resources),
>  		.resources = vsc7512_miim1_resources,
> +	}, {
> +		.name = "ocelot-ext-switch",
> +		.of_compatible = "mscc,vsc7512-ext-switch",
>  	},
>  };

Please separate this out into its own patch.

-- 
Lee Jones [李琼斯]