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net: gmac_rockchip: Add RMII support for rk3288

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Add RMII-specific handling to rk3288_gmac_fix_mac_speed() so that it
properly sets the RMII clock (2.5 MHz vs. 25 MHz) and speed bits
(10 Mbps vs. 100 Mbps). Also define a new rk3288_gmac_set_to_rmii()
function to set the PHY interface field and RMII_MODE bit.

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
This commit is contained in:
Christoph Fritz
2025-04-16 13:45:35 +02:00
committed by Kever Yang
parent b8ce3eb8bf
commit 115a0cb9a2
1 changed files with 53 additions and 16 deletions
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69
drivers/net/gmac_rockchip.c
View File

@@ -151,26 +151,51 @@ static int rk3228_gmac_fix_mac_speed(struct dw_eth_dev *priv)
static int rk3288_gmac_fix_mac_speed(struct dw_eth_dev *priv) static int rk3288_gmac_fix_mac_speed(struct dw_eth_dev *priv)
{ {
struct dw_eth_pdata *dw_pdata = dev_get_plat(priv->dev);
struct eth_pdata *eth_pdata = &dw_pdata->eth_pdata;
struct rk3288_grf *grf; struct rk3288_grf *grf;
grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
int clk; int clk;
switch (priv->phydev->speed) { if (eth_pdata->phy_interface == PHY_INTERFACE_MODE_RMII) {
case 10: switch (priv->phydev->speed) {
clk = RK3288_GMAC_CLK_SEL_2_5M; case 10:
break; rk_clrsetreg(&grf->soc_con1,
case 100: RK3288_RMII_CLK_SEL_MASK |
clk = RK3288_GMAC_CLK_SEL_25M; RK3288_GMAC_SPEED_MASK,
break; RK3288_RMII_CLK_SEL_2_5M |
case 1000: RK3288_GMAC_SPEED_10M);
clk = RK3288_GMAC_CLK_SEL_125M; break;
break; case 100:
default: rk_clrsetreg(&grf->soc_con1,
debug("Unknown phy speed: %d\n", priv->phydev->speed); RK3288_RMII_CLK_SEL_MASK |
return -EINVAL; RK3288_GMAC_SPEED_MASK,
} RK3288_RMII_CLK_SEL_25M |
RK3288_GMAC_SPEED_100M);
break;
default:
debug("Unknown phy speed: %d\n", priv->phydev->speed);
return -EINVAL;
}
} else {
switch (priv->phydev->speed) {
case 10:
clk = RK3288_GMAC_CLK_SEL_2_5M;
break;
case 100:
clk = RK3288_GMAC_CLK_SEL_25M;
break;
case 1000:
clk = RK3288_GMAC_CLK_SEL_125M;
break;
grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); default:
rk_clrsetreg(&grf->soc_con1, RK3288_GMAC_CLK_SEL_MASK, clk); debug("Unknown phy speed: %d\n", priv->phydev->speed);
return -EINVAL;
}
rk_clrsetreg(&grf->soc_con1, RK3288_GMAC_CLK_SEL_MASK, clk);
}
return 0; return 0;
} }
@@ -401,6 +426,17 @@ static void rk3228_gmac_set_to_rgmii(struct gmac_rockchip_plat *pdata)
pdata->tx_delay << RK3228_CLK_TX_DL_CFG_GMAC_SHIFT); pdata->tx_delay << RK3228_CLK_TX_DL_CFG_GMAC_SHIFT);
} }
static void rk3288_gmac_set_to_rmii(struct gmac_rockchip_plat *pdata)
{
struct rk3288_grf *grf;
grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
rk_clrsetreg(&grf->soc_con1,
RK3288_GMAC_PHY_INTF_SEL_MASK | RK3288_RMII_MODE_MASK,
RK3288_GMAC_PHY_INTF_SEL_RMII | RK3288_RMII_MODE);
}
static void rk3288_gmac_set_to_rgmii(struct gmac_rockchip_plat *pdata) static void rk3288_gmac_set_to_rgmii(struct gmac_rockchip_plat *pdata)
{ {
struct rk3288_grf *grf; struct rk3288_grf *grf;
@@ -703,6 +739,7 @@ const struct rk_gmac_ops rk3228_gmac_ops = {
const struct rk_gmac_ops rk3288_gmac_ops = { const struct rk_gmac_ops rk3288_gmac_ops = {
.fix_mac_speed = rk3288_gmac_fix_mac_speed, .fix_mac_speed = rk3288_gmac_fix_mac_speed,
.set_to_rgmii = rk3288_gmac_set_to_rgmii, .set_to_rgmii = rk3288_gmac_set_to_rgmii,
.set_to_rmii = rk3288_gmac_set_to_rmii,
}; };
const struct rk_gmac_ops rk3308_gmac_ops = { const struct rk_gmac_ops rk3308_gmac_ops = {