From: Sonic Zhang <sonic.zh...@analog.com>
Board can define its own AXI burst length to improve DWMAC DMA performance.
Signed-off-by: Sonic Zhang <sonic.zh...@analog.com>
---
drivers/net/designware.c | 2 ++
drivers/net/designware.h | 5 +++++
2 files changed, 7 insertions(+)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 9ded895..d8d6792 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -256,6 +256,8 @@ static int dw_eth_init(struct eth_device *dev, bd_t *bis)
writel(readl(&dma_p->opmode) | RXSTART | TXSTART, &dma_p->opmode);
+ writel((CONFIG_DW_AXI_BURST_LEN & 0x1FF >> 1), &dma_p->axibus);
+
/* Start up the PHY */
if (phy_startup(priv->phydev)) {
printf("Could not initialize PHY %s\n",
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index ce51102..d8bd84d 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -102,6 +102,11 @@ struct eth_dma_regs {
#define TXSECONDFRAME (1 << 2)
#define RXSTART (1 << 1)
+/* Default AXI BUS Burst length */
+#ifndef CONFIG_DW_AXI_BURST_LEN
+#define CONFIG_DW_AXI_BURST_LEN 0
+#endif
+
/* Descriptior related definitions */
#define MAC_MAX_FRAME_SZ (1600)
--
1.7.9.5
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