From: Frank Li > From: Fugang Duan <B38611@xxxxxxxxxxxxx> > > Since enet-avb has 64 bytes alignment limitation for rx DMA transfer. > The previous enet IP for ARM platform has 16 bytes alignment for tx > DMA transfer. Do you mean rx or tx here? or both?? And can we beat up the hardware designers to stop these restrictions on rx (in particular) ethernet buffer alignments? A device isn't suitable for ethernet unless is can write the destination mac address to a 4n+2 boundary. David > 64 is the an integral number of 16, so change alignment > to 64 bytes for all ARM platform, which don't impact the performance > of previous platform. > > Signed-off-by: Fugang Duan <B38611@xxxxxxxxxxxxx> > Signed-off-by: Frank Li <Frank.Li@xxxxxxxxxxxxx> > --- > drivers/net/ethernet/freescale/fec_main.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c > index a232245..b388e29f 100644 > --- a/drivers/net/ethernet/freescale/fec_main.c > +++ b/drivers/net/ethernet/freescale/fec_main.c > @@ -65,7 +65,7 @@ > static void set_multicast_list(struct net_device *ndev); > > #if defined(CONFIG_ARM) > -#define FEC_ALIGNMENT 0xf > +#define FEC_ALIGNMENT 0x3f > #else > #define FEC_ALIGNMENT 0x3 > #endif > -- > 1.9.1 > > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
