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Commit 12da4844 authored by Sascha Hauer's avatar Sascha Hauer Committed by Shawn Guo
Browse files

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



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: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 14078291

arch/arm/mach-imx/mach-imx6q.c

+27 −0
Original line number Diff line number Diff line
@@ -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 @@ static void __init imx6q_sabrelite_cko1_setup(void) 
		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);

	}

}