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net: ethernet: mtk-star-emac: add support for MII interface

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Add support for MII interface.
If user wants to use MII, assign "MII" to "phy-mode" property in dts.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: Yinghua Pan <ot_yinghua.pan@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Biao Huang
2022-06-29 11:17:41 +08:00
committed by David S. Miller
parent 320c49fe31
commit 0027340a23
1 changed files with 11 additions and 1 deletions
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drivers/net/ethernet/mediatek/mtk_star_emac.c
+11 -1
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@@ -192,6 +192,7 @@ static const char *const mtk_star_clk_names[] = { "core", "reg", "trans" };
#define MTK_PERICFG_REG_NIC_CFG1_CON 0x03c8
#define MTK_PERICFG_REG_NIC_CFG_CON_V2 0x0c10
#define MTK_PERICFG_REG_NIC_CFG_CON_CFG_INTF GENMASK(3, 0)
#define MTK_PERICFG_BIT_NIC_CFG_CON_MII 0
#define MTK_PERICFG_BIT_NIC_CFG_CON_RMII 1
#define MTK_PERICFG_BIT_NIC_CFG_CON_CLK BIT(0)
#define MTK_PERICFG_BIT_NIC_CFG_CON_CLK_V2 BIT(8)
@@ -1462,6 +1463,7 @@ static int mtk_star_set_timing(struct mtk_star_priv *priv)
unsigned int delay_val = 0;
switch (priv->phy_intf) {
case PHY_INTERFACE_MODE_MII:
case PHY_INTERFACE_MODE_RMII:
delay_val |= FIELD_PREP(MTK_STAR_BIT_INV_RX_CLK, priv->rx_inv);
delay_val |= FIELD_PREP(MTK_STAR_BIT_INV_TX_CLK, priv->tx_inv);
@@ -1543,7 +1545,8 @@ static int mtk_star_probe(struct platform_device *pdev)
ret = of_get_phy_mode(of_node, &priv->phy_intf);
if (ret) {
return ret;
} else if (priv->phy_intf != PHY_INTERFACE_MODE_RMII) {
} else if (priv->phy_intf != PHY_INTERFACE_MODE_RMII &&
priv->phy_intf != PHY_INTERFACE_MODE_MII) {
dev_err(dev, "unsupported phy mode: %s\n",
phy_modes(priv->phy_intf));
return -EINVAL;
@@ -1612,6 +1615,10 @@ static int mt8516_set_interface_mode(struct net_device *ndev)
unsigned int intf_val, ret, rmii_rxc;
switch (priv->phy_intf) {
case PHY_INTERFACE_MODE_MII:
intf_val = MTK_PERICFG_BIT_NIC_CFG_CON_MII;
rmii_rxc = 0;
break;
case PHY_INTERFACE_MODE_RMII:
intf_val = MTK_PERICFG_BIT_NIC_CFG_CON_RMII;
rmii_rxc = priv->rmii_rxc ? 0 : MTK_PERICFG_BIT_NIC_CFG_CON_CLK;
@@ -1641,6 +1648,9 @@ static int mt8365_set_interface_mode(struct net_device *ndev)
unsigned int intf_val;
switch (priv->phy_intf) {
case PHY_INTERFACE_MODE_MII:
intf_val = MTK_PERICFG_BIT_NIC_CFG_CON_MII;
break;
case PHY_INTERFACE_MODE_RMII:
intf_val = MTK_PERICFG_BIT_NIC_CFG_CON_RMII;
intf_val |= priv->rmii_rxc ? 0 : MTK_PERICFG_BIT_NIC_CFG_CON_CLK_V2;