linux-kernel - Re: [RFC net-next 1/4] net: phy: add MediaTek PHY driver

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Message-ID: <YGyGFOrXwEsqCW/z@lunn.ch>
Date:   Tue, 6 Apr 2021 18:02:28 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>
Cc:     DENG Qingfang <dqfext@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Landen Chao <Landen.Chao@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Sean Wang <sean.wang@...iatek.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sergio Paracuellos <sergio.paracuellos@...il.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        linux-staging@...ts.linux.dev, DTML <devicetree@...r.kernel.org>,
        netdev@...r.kernel.org, Weijie Gao <weijie.gao@...iatek.com>,
        Chuanhong Guo <gch981213@...il.com>,
        René van Dorst <opensource@...rst.com>
Subject: Re: [RFC net-next 1/4] net: phy: add MediaTek PHY driver

On Tue, Apr 06, 2021 at 11:47:08PM +0800, Chun-Kuang Hu wrote:
> Hi, Qingfang:
> 
> DENG Qingfang <dqfext@...il.com> 於 2021年4月6日 週二 下午10:19寫道：
> >
> > Add support for MediaTek PHYs found in MT7530 and MT7531 switches.
> > The initialization procedure is from the vendor driver, but due to lack
> > of documentation, the function of some register values remains unknown.
> >
> > Signed-off-by: DENG Qingfang <dqfext@...il.com>
> > ---
> >  drivers/net/phy/Kconfig    |   5 ++
> >  drivers/net/phy/Makefile   |   1 +
> >  drivers/net/phy/mediatek.c | 109 +++++++++++++++++++++++++++++++++++++
> >  3 files changed, 115 insertions(+)
> >  create mode 100644 drivers/net/phy/mediatek.c
> >
> > diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
> > index a615b3660b05..edd858cec9ec 100644
> > --- a/drivers/net/phy/Kconfig
> > +++ b/drivers/net/phy/Kconfig
> > @@ -207,6 +207,11 @@ config MARVELL_88X2222_PHY
> >           Support for the Marvell 88X2222 Dual-port Multi-speed Ethernet
> >           Transceiver.
> >
> > +config MEDIATEK_PHY
> 
> There are many Mediatek phy drivers in [1], so use a specific name.

Those are generic PHY drivers, where as this patch is add a PHY
driver. The naming used in this patch is consistent with other PHY
drivers. So i'm happy with this patch in this respect.

PHY drivers have been around a lot longer than generic PHY drivers. So
i would actually say the generic PHY driver naming should make it
clear they are generic PHYs, not PHYs.

But lets not bike shed about this too much.

      Andrew