diff options
| author | Fugang Duan <b38611@freescale.com> | 2014-12-25 17:17:49 +0800 |
|---|---|---|
| committer | Dong Aisheng <aisheng.dong@nxp.com> | 2019-11-25 16:31:54 +0800 |
| commit | c894edb3670ad6bc68a35ba513e33b6e98e64db3 (patch) | |
| tree | e232736dcebaae9b0bd465e96399b9f6fceeb7a7 /arch/arm/mach-imx | |
| parent | a3990871b98587f53548e769c23fda5c2644063c (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>
Signed-off-by: Arulpandiyan Vadivel <arulpandiyan_vadivel@mentor.com>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 8 | ||||
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6sx.c | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index d21c4798054e..ef9c1f8f8391 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -106,6 +106,14 @@ 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); diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c index fd382d00d53f..a02b403d3ab5 100644 --- a/arch/arm/mach-imx/mach-imx6sx.c +++ b/arch/arm/mach-imx/mach-imx6sx.c @@ -23,6 +23,14 @@ static int ar8031_phy_fixup(struct phy_device *dev) phy_write(dev, 0x1d, 0x1f); phy_write(dev, 0x1e, 0x8); + /* 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); + /* introduce tx clock delay */ phy_write(dev, 0x1d, 0x5); val = phy_read(dev, 0x1e); |