From: David Miller <davem@davemloft.net>
To: quentin.schulz@bootlin.com
Cc: alexandre.belloni@bootlin.com, ralf@linux-mips.org,
paul.burton@mips.com, jhogan@kernel.org, robh+dt@kernel.org,
mark.rutland@arm.com, kishon@ti.com, andrew@lunn.ch,
f.fainelli@gmail.com, allan.nielsen@microchip.com,
linux-mips@linux-mips.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
thomas.petazzoni@bootlin.com
Subject: Re: [PATCH net-next v4 00/11] mscc: ocelot: add support for SerDes muxing configuration
Date: Fri, 05 Oct 2018 14:39:24 -0700 (PDT) [thread overview]
Message-ID: <20181005.143924.1849227852256176976.davem@davemloft.net> (raw)
In-Reply-To: <20181004122208.32272-1-quentin.schulz@bootlin.com>
From: Quentin Schulz <quentin.schulz@bootlin.com>
Date: Thu, 4 Oct 2018 14:21:57 +0200
> The Ocelot switch has currently an hardcoded SerDes muxing that suits only
> a particular use case. Any other board setup will fail to work.
>
> To prepare for upcoming boards' support that do not have the same muxing,
> create a PHY driver that will handle all possible cases.
>
> A SerDes can work in SGMII, QSGMII or PCIe and is also muxed to use a
> given port depending on the selected mode or board design.
>
> The SerDes configuration is in the middle of an address space (HSIO) that
> is used to configure some parts in the MAC controller driver, that is why
> we need to use a syscon so that we can write to the same address space from
> different drivers safely using regmap.
>
> This breaks backward compatibility but it's fine because there's only one
> board at the moment that is using what's modified in this patch series.
> This will break git bisect.
>
> Even though this patch series is about SerDes __muxing__ configuration, the
> DT node is named serdes for the simple reason that I couldn't find any
> mention to SerDes anywhere else from the address space handled by this
> driver.
Series applied to net-next, thanks.
prev parent reply other threads:[~2018-10-05 21:39 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-04 12:21 [PATCH net-next v4 00/11] mscc: ocelot: add support for SerDes muxing configuration Quentin Schulz
2018-10-04 12:21 ` [PATCH net-next v4 01/11] MIPS: mscc: ocelot: make HSIO registers address range a syscon Quentin Schulz
2018-10-04 12:21 ` [PATCH net-next v4 02/11] dt-bindings: net: ocelot: remove hsio from the list of register address spaces Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 03/11] net: mscc: ocelot: get HSIO regmap from syscon Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 04/11] net: mscc: ocelot: move the HSIO header to include/soc Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 05/11] net: mscc: ocelot: simplify register access for PLL5 configuration Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 06/11] phy: add QSGMII and PCIE modes Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 07/11] dt-bindings: phy: add DT binding for Microsemi Ocelot SerDes muxing Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 08/11] MIPS: mscc: ocelot: add SerDes mux DT node Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 09/11] dt-bindings: add constants for Microsemi Ocelot SerDes driver Quentin Schulz
2018-10-04 20:15 ` Florian Fainelli
2018-10-04 12:22 ` [PATCH net-next v4 10/11] phy: add driver for Microsemi Ocelot SerDes muxing Quentin Schulz
2018-10-04 12:22 ` [PATCH net-next v4 11/11] net: mscc: ocelot: make use of SerDes PHYs for handling their configuration Quentin Schulz
2018-10-04 20:16 ` Florian Fainelli
2018-10-05 21:39 ` David Miller [this message]
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