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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2013-06-20 17:34:33 +0200 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-08-16 13:11:20 +0800 |
| commit | dbf6719a4a080669acb5087893704586c791aa41 (patch) | |
| tree | 578da9ec6cd0757ab7ce6e3eaf431a877a100156 /arch/arm/mach-imx/mach-imx6q.c | |
| parent | 12da484485b0ae0cd1588ade3904c1f647ab58cd (diff) | |
| download | lwn-dbf6719a4a080669acb5087893704586c791aa41.tar.gz lwn-dbf6719a4a080669acb5087893704586c791aa41.zip | |
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 <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 57f350cd66b4..db1db78b28fc 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -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); } |