diff options
| author |   Iyappan Subramanian <isubramanian@apm.com> | 2015-10-26 15:25:15 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-10-30 12:21:51 +0900 |
| commit | 16615a4c6f4d54d7655dff19e7061c76043f907d (patch) | |
| tree | 852c88a4d6c9b7a50a3812521c677e9429d588e7 /drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | |
| parent | bridge: set is_local and is_static before fdb entry is added to the fdb hashtable (diff) | |
| download | linux-dev-16615a4c6f4d54d7655dff19e7061c76043f907d.tar.xz linux-dev-16615a4c6f4d54d7655dff19e7061c76043f907d.zip | |
drivers: net: xgene: Add support RGMII TX/RX delay configuration
Add RGMII TX/RX delay configuration support. RGMII standard requires 2ns
delay to help the RGMII bridge receiver to sample data correctly. If the
default value does not provide proper centering of the data sample, the
TX/RX delay parameters can be used to adjust accordingly.
Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index 652f21889a48..33850a0f7e82 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -461,6 +461,7 @@ static void xgene_gmac_reset(struct xgene_enet_pdata *pdata) static void xgene_gmac_init(struct xgene_enet_pdata *pdata) { + struct device *dev = &pdata->pdev->dev; u32 value, mc2; u32 intf_ctl, rgmii; u32 icm0, icm2; @@ -490,7 +491,12 @@ static void xgene_gmac_init(struct xgene_enet_pdata *pdata) default: ENET_INTERFACE_MODE2_SET(&mc2, 2); intf_ctl |= ENET_GHD_MODE; - CFG_TXCLK_MUXSEL0_SET(&rgmii, 4); + + if (dev->of_node) { + CFG_TXCLK_MUXSEL0_SET(&rgmii, pdata->tx_delay); + CFG_RXCLK_MUXSEL0_SET(&rgmii, pdata->rx_delay); + } + xgene_enet_rd_csr(pdata, DEBUG_REG_ADDR, &value); value |= CFG_BYPASS_UNISEC_TX | CFG_BYPASS_UNISEC_RX; xgene_enet_wr_csr(pdata, DEBUG_REG_ADDR, value); |