From 15eff36c098e412999c9fe1a0249848d78c94dcc Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 20 Jun 2013 17:34:33 +0200 Subject: [PATCH] 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: Sascha Hauer Signed-off-by: Shawn Guo Signed-off-by: Shawn Guo --- arch/arm/mach-imx/mach-imx6q.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index e60456d85c9d..baa0dcfada8d 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -108,6 +108,27 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8609, ventana_pciesw_early_fixup); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, ventana_pciesw_early_fixup); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, ventana_pciesw_early_fixup); +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; -- 2.39.2