On 4/23/2013 9:48 PM, Markus Brunner wrote:
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.brunner@xxxxxxxxx> Tested-by: Mark Jackson <mpfj@xxxxxxxxxxxxx> --- --- 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);
Disabling VLAN aware mode will enable switching mode and the feature of separating the two down stream port is lost with this patch Please check TRM for more info in *14.3.2.10.2 Dual Mac Mode* chapter Regards Mugunthan V N -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
