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ARM: i.MX6: add ethernet phy fixup for AR8031

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The AR8031 is used on the i.MX6 based sabreSD, sabreauto and wandboard.
All need the same fixup, so add it for all i.MX6.

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 17:34:32 +02:00 committed by Shawn Guo
parent 14078291d8
commit 12da484485
1 changed files with 27 additions and 0 deletions
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27
arch/arm/mach-imx/mach-imx6q.c
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@ -115,6 +115,29 @@ static int ksz9021rn_phy_fixup(struct phy_device *phydev)
return 0;
}
static int ar8031_phy_fixup(struct phy_device *dev)
{
u16 val;
/* To enable AR8031 output a 125MHz clk from CLK_25M */
phy_write(dev, 0xd, 0x7);
phy_write(dev, 0xe, 0x8016);
phy_write(dev, 0xd, 0x4007);
val = phy_read(dev, 0xe);
val &= 0xffe3;
val |= 0x18;
phy_write(dev, 0xe, val);
/* introduce tx clock delay */
phy_write(dev, 0x1d, 0x5);
val = phy_read(dev, 0x1e);
val |= 0x0100;
phy_write(dev, 0x1e, val);
return 0;
}
static void __init imx6q_sabrelite_cko1_setup(void)
{
struct clk *cko1_sel, *ahb, *cko1;
@ -139,11 +162,15 @@ put_clk:
clk_put(cko1);
}
#define PHY_ID_AR8031 0x004dd074
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_AR8031, 0xffffffff,
ar8031_phy_fixup);
}
}