[U-Boot] [PATCH v2] net: configure DWMAC DMA by default AXI burst length
From: Sonic Zhang sonic.zhang@analog.com
Board can define its own AXI burst length to improve DWMAC DMA performance.
v2-changes: - Avoid write burst len register when the Macro is not defined.
Signed-off-by: Sonic Zhang sonic.zhang@analog.com --- drivers/net/designware.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 9ded895..51eff85 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -256,6 +256,10 @@ static int dw_eth_init(struct eth_device *dev, bd_t *bis)
writel(readl(&dma_p->opmode) | RXSTART | TXSTART, &dma_p->opmode);
+#ifdef CONFIG_DW_AXI_BURST_LEN + writel((CONFIG_DW_AXI_BURST_LEN & 0x1FF >> 1), &dma_p->axibus); +#endif + /* Start up the PHY */ if (phy_startup(priv->phydev)) { printf("Could not initialize PHY %s\n",
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Sonic Zhang