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Fri, 26 May 2023 16:59:37 +0000 (UTC) Date: Fri, 26 May 2023 18:59:36 +0200 From: Maxime Chevallier To: Vladimir Oltean Cc: Mark Brown , davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, alexis.lothore@bootlin.com, thomas.petazzoni@bootlin.com, Andrew Lunn , Jakub Kicinski , Eric Dumazet , Paolo Abeni , Florian Fainelli , Heiner Kallweit , Russell King , Ioana Ciornei , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Maxime Coquelin , Jose Abreu , Alexandre Torgue , Giuseppe Cavallaro , Simon Horman Subject: Re: [PATCH net-next v3 1/4] net: mdio: Introduce a regmap-based mdio driver Message-ID: <20230526185936.0a95b9e9@pc-7.home> In-Reply-To: <20230526102139.dwttilkquihvp7bs@skbuf> References: <20230526074252.480200-1-maxime.chevallier@bootlin.com> <20230526074252.480200-2-maxime.chevallier@bootlin.com> <20230526102139.dwttilkquihvp7bs@skbuf> Organization: Bootlin X-Mailer: Claws Mail 4.1.1 (GTK 3.24.37; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230526_095947_056579_3FB69073 X-CRM114-Status: GOOD ( 26.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hello Vlad, On Fri, 26 May 2023 13:21:39 +0300 Vladimir Oltean wrote: > > M: William Breathitt Gray > > L: linux-iio@vger.kernel.org > > diff --git a/drivers/net/ethernet/altera/Kconfig > > b/drivers/net/ethernet/altera/Kconfig index > > dd7fd41ccde5..0a7c0a217536 100644 --- > > a/drivers/net/ethernet/altera/Kconfig +++ > > b/drivers/net/ethernet/altera/Kconfig @@ -5,6 +5,8 @@ config > > ALTERA_TSE select PHYLIB > > select PHYLINK > > select PCS_ALTERA_TSE > > + select MDIO_REGMAP > > + depends on REGMAP > > I don't think this bit belongs in this patch. > Also: depends on REGMAP or select REGMAP? Ugh sorry about that... I'll address both the dependency and the wrong patch splitting in next revision. > > help > > This driver supports the Altera Triple-Speed (TSE) > > Ethernet MAC. > > diff --git a/drivers/net/mdio/Kconfig b/drivers/net/mdio/Kconfig > > index 9ff2e6f22f3f..aef39c89cf44 100644 > > --- a/drivers/net/mdio/Kconfig > > +++ b/drivers/net/mdio/Kconfig > > @@ -185,6 +185,16 @@ config MDIO_IPQ8064 > > This driver supports the MDIO interface found in the > > network interface units of the IPQ8064 SoC > > > > +config MDIO_REGMAP > > + tristate > > + help > > + This driver allows using MDIO devices that are not > > sitting on a > > + regular MDIO bus, but still exposes the standard 802.3 > > register > > + layout. It's regmap-based so that it can be used on > > integrated, > > + memory-mapped PHYs, SPI PHYs and so on. A new virtual > > MDIO bus is > > + created, and its read/write operations are mapped to the > > underlying > > + regmap. > > It would probably be helpful to state that those who select this > option should also explicitly select REGMAP. You're right, I'll update this > > + > > config MDIO_THUNDER > > tristate "ThunderX SOCs MDIO buses" > > depends on 64BIT > > diff --git a/drivers/net/mdio/Makefile b/drivers/net/mdio/Makefile > > index 7d4cb4c11e4e..1015f0db4531 100644 > > --- a/drivers/net/mdio/Makefile > > +++ b/drivers/net/mdio/Makefile > > @@ -19,6 +19,7 @@ obj-$(CONFIG_MDIO_MOXART) += > > mdio-moxart.o obj-$(CONFIG_MDIO_MSCC_MIIM) += > > mdio-mscc-miim.o obj-$(CONFIG_MDIO_MVUSB) += > > mdio-mvusb.o obj-$(CONFIG_MDIO_OCTEON) += > > mdio-octeon.o +obj-$(CONFIG_MDIO_REGMAP) += > > mdio-regmap.o obj-$(CONFIG_MDIO_SUN4I) += > > mdio-sun4i.o obj-$(CONFIG_MDIO_THUNDER) += > > mdio-thunder.o obj-$(CONFIG_MDIO_XGENE) += > > mdio-xgene.o diff --git a/include/linux/mdio/mdio-regmap.h > > b/include/linux/mdio/mdio-regmap.h new file mode 100644 > > index 000000000000..b8508f152552 > > --- /dev/null > > +++ b/include/linux/mdio/mdio-regmap.h > > @@ -0,0 +1,24 @@ > > +/* SPDX-License-Identifier: GPL-2.0 */ > > +/* Driver for MMIO-Mapped MDIO devices. Some IPs expose internal > > PHYs or PCS > > + * within the MMIO-mapped area > > + * > > + * Copyright (C) 2023 Maxime Chevallier > > > > + */ > > +#ifndef MDIO_REGMAP_H > > +#define MDIO_REGMAP_H > > + > > +struct device; > > +struct regmap; > > + > > +struct mdio_regmap_config { > > + struct device *parent; > > + struct regmap *regmap; > > + char name[MII_BUS_ID_SIZE]; > > don't we need a header included for the MII_BUS_ID_SIZE macro? > An empty C file which includes just must > build without errors. You're correct, I'll include the proper header. Thanks, Maxime _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel