From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Paul Burton <paul.burton@mips.com>,
Ralf Baechle <ralf@linux-mips.org>,
James Hogan <jhogan@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Jay Cliburn <jcliburn@gmail.com>,
Chris Snook <chris.snook@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Mark Rutland <mark.rutland@arm.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, John Crispin <john@phrozen.org>,
Felix Fietkau <nbd@nbd.name>,
netdev@vger.kernel.org, Chuanhong Guo <gch981213@gmail.com>,
info@freifunk-bad-gandersheim.net
Subject: Re: [PATCH v4 3/3] net: ethernet: add ag71xx driver
Date: Mon, 20 May 2019 09:05:26 +0200 [thread overview]
Message-ID: <5e836144-44e5-d99c-716c-8af42486a6b0@pengutronix.de> (raw)
In-Reply-To: <20190520003302.GA1695@lunn.ch>
On 20.05.19 02:33, Andrew Lunn wrote:
> Hi Oleksij
>
>> +static int ag71xx_mdio_mii_read(struct mii_bus *bus, int addr, int reg)
>> +{
>> + struct ag71xx *ag = bus->priv;
>> + struct net_device *ndev = ag->ndev;
>> + int err;
>> + int ret;
>> +
>> + err = ag71xx_mdio_wait_busy(ag);
>> + if (err)
>> + return err;
>> +
>> + ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
>
> It looks like you have not removed this.
done.
>
>> + ag71xx_wr(ag, AG71XX_REG_MII_ADDR,
>> + ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff));
>> + ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_READ);
>> +
>> + err = ag71xx_mdio_wait_busy(ag);
>> + if (err)
>> + return err;
>> +
>> + ret = ag71xx_rr(ag, AG71XX_REG_MII_STATUS);
>> + /*
>> + * ar9331 doc: bits 31:16 are reserved and must be must be written
>> + * with zero.
>> + */
>> + ret &= 0xffff;
>> + ag71xx_wr(ag, AG71XX_REG_MII_CMD, MII_CMD_WRITE);
>
> Or this.
this one is needed. MII_CMD_WRITE is a wrong name, it is actually disabling MII_CMD_READ mode.
>
>> +
>> + netif_dbg(ag, link, ndev, "mii_read: addr=%04x, reg=%04x, value=%04x\n",
>> + addr, reg, ret);
>> +
>> + return ret;
>> +}
>> +
>> +static int ag71xx_mdio_mii_write(struct mii_bus *bus, int addr, int reg,
>> + u16 val)
>> +{
>> + struct ag71xx *ag = bus->priv;
>> + struct net_device *ndev = ag->ndev;
>> +
>> + netif_dbg(ag, link, ndev, "mii_write: addr=%04x, reg=%04x, value=%04x\n",
>> + addr, reg, val);
>> +
>> + ag71xx_wr(ag, AG71XX_REG_MII_ADDR,
>> + ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff));
>
> addr have the vale 0-31. So a mask of 0xff is a couple of bits too
> big.
done
>
>> + ag71xx_wr(ag, AG71XX_REG_MII_CTRL, val);
>> +
>> + return ag71xx_mdio_wait_busy(ag);
>> +}
>
>> +static void ag71xx_link_adjust(struct ag71xx *ag, bool update)
>> +{
>> + struct net_device *ndev = ag->ndev;
>> + struct phy_device *phydev = ndev->phydev;
>> + u32 cfg2;
>> + u32 ifctl;
>> + u32 fifo5;
>> +
>> + if (!phydev->link && update) {
>> + ag71xx_hw_stop(ag);
>> + netif_carrier_off(ag->ndev);
>
> phylib will take care of the carrier for you.
done
> Andrew
thx!
Kind regards,
Oleksij Rempel
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
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next prev parent reply other threads:[~2019-05-20 7:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-19 8:03 [PATCH v4 0/3] MIPS: ath79: add ag71xx support Oleksij Rempel
2019-05-19 8:03 ` [PATCH v4 1/3] dt-bindings: net: add qca,ar71xx.txt documentation Oleksij Rempel
2019-05-19 8:03 ` [PATCH v4 2/3] MIPS: ath79: ar9331: add Ethernet nodes Oleksij Rempel
2019-05-19 8:03 ` [PATCH v4 3/3] net: ethernet: add ag71xx driver Oleksij Rempel
2019-05-20 0:33 ` Andrew Lunn
2019-05-20 7:05 ` Oleksij Rempel [this message]
2019-05-20 0:33 ` Andrew Lunn
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