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ARM: i.MX6: add ethernet phy fixup for KSZ9031

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The KSZ9031 is used on the i.MX6 based Data Modul eDM-QMX6
board. It needs the same fixup to the rx/tx delays as other
i.MX6 boards.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Sascha Hauer 2013-06-20 17:34:33 +02:00 committed by Shawn Guo
parent 12da484485
commit dbf6719a4a
1 changed files with 23 additions and 0 deletions
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23
arch/arm/mach-imx/mach-imx6q.c
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@ -115,6 +115,27 @@ static int ksz9021rn_phy_fixup(struct phy_device *phydev)
return 0;
}
static void mmd_write_reg(struct phy_device *dev, int device, int reg, int val)
{
phy_write(dev, 0x0d, device);
phy_write(dev, 0x0e, reg);
phy_write(dev, 0x0d, (1 << 14) | device);
phy_write(dev, 0x0e, val);
}
static int ksz9031rn_phy_fixup(struct phy_device *dev)
{
/*
* min rx data delay, max rx/tx clock delay,
* min rx/tx control delay
*/
mmd_write_reg(dev, 2, 4, 0);
mmd_write_reg(dev, 2, 5, 0);
mmd_write_reg(dev, 2, 8, 0x003ff);
return 0;
}
static int ar8031_phy_fixup(struct phy_device *dev)
{
u16 val;
@ -169,6 +190,8 @@ static void __init imx6q_enet_phy_init(void)
if (IS_BUILTIN(CONFIG_PHYLIB)) {
phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
ksz9021rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
ksz9031rn_phy_fixup);
phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
ar8031_phy_fixup);
}