From: Thierry Reding <treding@xxxxxxxxxx>
Allow the device to use bursts and increase the maximum number of
outstanding requests to improve performance. Measurements show an
increase in throughput of around 5x on a 1 Gbps link.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
index bab57d1675df..b6bfa48f279d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-tegra.c
@@ -199,6 +199,12 @@ static void mgbe_uphy_lane_bringup_serdes_down(struct net_device *ndev, void *mg
writel(value, mgbe->xpcs + XPCS_WRAP_UPHY_RX_CONTROL);
}
+static const struct stmmac_axi tegra234_mgbe_axi = {
+ .axi_wr_osr_lmt = 63,
+ .axi_rd_osr_lmt = 63,
+ .axi_blen = { 256, },
+};
+
static int tegra_mgbe_probe(struct platform_device *pdev)
{
struct plat_stmmacenet_data *plat;
@@ -284,6 +290,9 @@ static int tegra_mgbe_probe(struct platform_device *pdev)
if (err < 0)
goto disable_clks;
+ /* setup default AXI configuration */
+ res.axi = &tegra234_mgbe_axi;
+
plat = devm_stmmac_probe_config_dt(pdev, &res);
if (IS_ERR(plat)) {
err = PTR_ERR(plat);
--
2.43.2
