From: Fabio Estevam fabio.estevam@nxp.com
Since commit 59370f3fcd1350 ("net: phy: delay only if reset handler is registered") Ethernet is no longer functional:
Booting from net ... FEC Waiting for PHY auto negotiation to complete......... TIMEOUT ! BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4
This commit does not have an issue in itself, but it revelead a problem with the Ethernet initialization.
Configure the AR8035 PHY in the same manner as done in mx6sabresd and wandboard, so that we can get a reliable Ethernet operation.
Signed-off-by: Fabio Estevam fabio.estevam@nxp.com --- board/solidrun/mx6cuboxi/mx6cuboxi.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)
diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c index 20faffc..3bb7573 100644 --- a/board/solidrun/mx6cuboxi/mx6cuboxi.c +++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c @@ -147,8 +147,33 @@ static void setup_iomux_enet(void) gpio_set_value(ETH_PHY_RESET, 1); }
+static int mx6_rgmii_rework(struct phy_device *phydev) +{ + unsigned short val; + + /* Enable AR8035 ouput a 125MHz clk from CLK_25M */ + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7); + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016); + phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007); + + val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe); + val &= 0xffe3; + val |= 0x18; + phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val); + + /* introduce tx clock delay */ + phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5); + val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e); + val |= 0x0100; + phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val); + + return 0; +} + int board_phy_config(struct phy_device *phydev) { + mx6_rgmii_rework(phydev); + if (phydev->drv->config) phydev->drv->config(phydev);