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Message-Id: <1371688820-4585-2-git-send-email-ddaney.cavm@gmail.com> Date: Wed, 19 Jun 2013 17:40:19 -0700 From: David Daney <ddaney.cavm@...il.com> To: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net> Cc: linux-mips@...ux-mips.org, David Daney <david.daney@...ium.com> Subject: [PATCH 1/2] netdev: octeon_mgmt: Correct tx IFG workaround. From: David Daney <david.daney@...ium.com> The previous fix was still too agressive to meet ieee specs. Increase to (14, 10). Signed-off-by: David Daney <david.daney@...ium.com> --- drivers/net/ethernet/octeon/octeon_mgmt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/octeon/octeon_mgmt.c b/drivers/net/ethernet/octeon/octeon_mgmt.c index e6e0292..1ef4148 100644 --- a/drivers/net/ethernet/octeon/octeon_mgmt.c +++ b/drivers/net/ethernet/octeon/octeon_mgmt.c @@ -1141,10 +1141,13 @@ static int octeon_mgmt_open(struct net_device *netdev) /* For compensation state to lock. */ ndelay(1040 * NS_PER_PHY_CLK); - /* Some Ethernet switches cannot handle standard - * Interframe Gap, increase to 16 bytes. + /* Default Interframe Gaps are too small. Recommended + * workaround is. + * + * AGL_GMX_TX_IFG[IFG1]=14 + * AGL_GMX_TX_IFG[IFG2]=10 */ - cvmx_write_csr(CVMX_AGL_GMX_TX_IFG, 0x88); + cvmx_write_csr(CVMX_AGL_GMX_TX_IFG, 0xae); } octeon_mgmt_rx_fill_ring(netdev); -- 1.7.11.7 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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