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Commit dbf6719a authored by Sascha Hauer's avatar Sascha Hauer Committed by Shawn Guo
Browse files

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



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: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 12da4844

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

+23 −0
Original line number Diff line number Diff line
@@ -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);

	}