If operating in dual emac mode all packets sent by the CPSW contain vlan
headers with the reserved VID 0,
which gets stripped away by all somewhat recent Linux versions. Operating
systems without that behaviour will fail to communicate.
This patch fixes that behaviour by disabling the VLAN_AWARE mode as already
described by the comment above.
Signed-off-by: Markus Brunner <systemprogrammierung.brun...@gmail.com>
Tested-by: Mark Jackson <m...@newflow.co.uk>
---
--- linux-3.9-rc8.orig/drivers/net/ethernet/ti/cpsw.c 2013-04-23
17:26:11.000000000 +0200
+++ linux-3.9-rc8/drivers/net/ethernet/ti/cpsw.c 2013-04-23
17:36:25.000000000 +0200
@@ -751,9 +751,9 @@ static void cpsw_init_host_port(struct c
/* switch to vlan unaware mode */
cpsw_ale_control_set(priv->ale, priv->host_port, ALE_VLAN_AWARE,
CPSW_ALE_VLAN_AWARE);
control_reg = readl(&priv->regs->control);
- control_reg |= CPSW_VLAN_AWARE;
+ control_reg &= ~CPSW_VLAN_AWARE;
writel(control_reg, &priv->regs->control);
fifo_mode = (priv->data.dual_emac) ? CPSW_FIFO_DUAL_MAC_MODE :
CPSW_FIFO_NORMAL_MODE;
writel(fifo_mode, &priv->host_port_regs->tx_in_ctl);
--
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