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| author | Sonic Zhang <sonic.zhang@analog.com> | 2015-01-29 13:37:31 +0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-03-05 11:17:53 -0500 |
| commit | 2ddaf13bd28d9d9450831e84e30d617d2f49f1bd (patch) | |
| tree | cfa3b345ceffe65c5859f5c32cd4c7e422383a28 | |
| parent | a32ab4d910b86c83a6dee557eed68298b7e9b361 (diff) | |
| download | u-boot-imx-2ddaf13bd28d9d9450831e84e30d617d2f49f1bd.zip u-boot-imx-2ddaf13bd28d9d9450831e84e30d617d2f49f1bd.tar.gz u-boot-imx-2ddaf13bd28d9d9450831e84e30d617d2f49f1bd.tar.bz2 | |
net: configure DWMAC DMA by default AXI burst length
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.
v3-changes:
- Add axi_bus register member to struct eth_dma_regs.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
| -rw-r--r-- | drivers/net/designware.c | 4 | ||||
| -rw-r--r-- | drivers/net/designware.h | 4 |
2 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/designware.c b/drivers/net/designware.c index c03e935..7469e59 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -258,6 +258,10 @@ 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", diff --git a/drivers/net/designware.h b/drivers/net/designware.h index ce51102..49d900c 100644 --- a/drivers/net/designware.h +++ b/drivers/net/designware.h @@ -68,7 +68,9 @@ struct eth_dma_regs { u32 status; /* 0x14 */ u32 opmode; /* 0x18 */ u32 intenable; /* 0x1c */ - u8 reserved[40]; + u32 reserved1[2]; + u32 axibus; /* 0x28 */ + u32 reserved2[7]; u32 currhosttxdesc; /* 0x48 */ u32 currhostrxdesc; /* 0x4c */ u32 currhosttxbuffaddr; /* 0x50 */ |