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 08:31:30 -0700
From:   Colin Foster <colin.foster@...advantage.com>
To:     Lee Jones <lee@...nel.org>
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 Mon, Sep 12, 2022 at 11:51:14AM +0100, Lee Jones wrote:
> 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.

I'll do that.

> 
> -- 
> Lee Jones [李琼斯]