diff options
| author | Fugang Duan <b38611@freescale.com> | 2014-12-25 17:17:49 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:21:29 +0800 |
| commit | 3c2a7ab81658e83ecee72d79ee093b917eeadb46 (patch) | |
| tree | 72e6d5adca4d2e312bb5fa617af6b4dccf8f7dbf /arch/arm/mach-imx/mach-imx6q.c | |
| parent | c086b949334035eeb169270120de340040dd9263 (diff) | |
MLK-10060 ARM: i.MX6: disable ethernet phy AR8031 EEE mode in default
Disable ethernet phy AR8031 EEE mode in default to reduce the IEEE1588
latency.
Signed-off-by: Fugang Duan <B38611@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx/mach-imx6q.c')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index c63e6f6e3525..68e293490ec5 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -113,6 +113,14 @@ static int ar8031_phy_fixup(struct phy_device *dev) { u16 val; + /* disable phy AR8031 SmartEEE function. */ + phy_write(dev, 0xd, 0x3); + phy_write(dev, 0xe, 0x805d); + phy_write(dev, 0xd, 0x4003); + val = phy_read(dev, 0xe); + val &= ~(0x1 << 8); + phy_write(dev, 0xe, val); + /* To enable AR8031 output a 125MHz clk from CLK_25M */ phy_write(dev, 0xd, 0x7); phy_write(dev, 0xe, 0x8016); |