[U-Boot] [PATCH 2/2] mx6cuboxi: Make Ethernet functional
Fabio Estevam
festevam at gmail.com
Mon Jan 4 17:36:18 CET 2016
From: Fabio Estevam <fabio.estevam at 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 at 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);
--
1.9.1
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