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net: stmmac: dwmac-rk: Add initial support for RK3528 integrated PHY

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Rockchip RK3528 (and RV1106) has a different integrated PHY compared to
the integrated PHY on RK3228/RK3328. Current powerup/down operation is
not compatible with the integrated PHY found in these newer SoCs.

Add operations to powerup/down the integrated PHY found in RK3528.
Use helpers that can be used by other GMAC variants in the future.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20250319214415.3086027-6-jonas@kwiboo.se
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonas Karlman
2025-03-19 21:44:09 +00:00
committed by Jakub Kicinski
parent 32c7bc0747
commit 83e7b35c78
1 changed files with 41 additions and 0 deletions
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41
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
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@@ -134,6 +134,35 @@ static void rk_gmac_integrated_ephy_powerdown(struct rk_priv_data *priv)
reset_control_assert(priv->phy_reset);
}
#define RK_FEPHY_SHUTDOWN GRF_BIT(1)
#define RK_FEPHY_POWERUP GRF_CLR_BIT(1)
#define RK_FEPHY_INTERNAL_RMII_SEL GRF_BIT(6)
#define RK_FEPHY_24M_CLK_SEL (GRF_BIT(8) | GRF_BIT(9))
#define RK_FEPHY_PHY_ID GRF_BIT(11)
static void rk_gmac_integrated_fephy_powerup(struct rk_priv_data *priv,
unsigned int reg)
{
reset_control_assert(priv->phy_reset);
usleep_range(20, 30);
regmap_write(priv->grf, reg,
RK_FEPHY_POWERUP |
RK_FEPHY_INTERNAL_RMII_SEL |
RK_FEPHY_24M_CLK_SEL |
RK_FEPHY_PHY_ID);
usleep_range(10000, 12000);
reset_control_deassert(priv->phy_reset);
usleep_range(50000, 60000);
}
static void rk_gmac_integrated_fephy_powerdown(struct rk_priv_data *priv,
unsigned int reg)
{
regmap_write(priv->grf, reg, RK_FEPHY_SHUTDOWN);
}
#define PX30_GRF_GMAC_CON1 0x0904
/* PX30_GRF_GMAC_CON1 */
@@ -993,12 +1022,24 @@ static void rk3528_set_clock_selection(struct rk_priv_data *bsp_priv,
}
}
static void rk3528_integrated_phy_powerup(struct rk_priv_data *bsp_priv)
{
rk_gmac_integrated_fephy_powerup(bsp_priv, RK3528_VO_GRF_MACPHY_CON0);
}
static void rk3528_integrated_phy_powerdown(struct rk_priv_data *bsp_priv)
{
rk_gmac_integrated_fephy_powerdown(bsp_priv, RK3528_VO_GRF_MACPHY_CON0);
}
static const struct rk_gmac_ops rk3528_ops = {
.set_to_rgmii = rk3528_set_to_rgmii,
.set_to_rmii = rk3528_set_to_rmii,
.set_rgmii_speed = rk3528_set_rgmii_speed,
.set_rmii_speed = rk3528_set_rmii_speed,
.set_clock_selection = rk3528_set_clock_selection,
.integrated_phy_powerup = rk3528_integrated_phy_powerup,
.integrated_phy_powerdown = rk3528_integrated_phy_powerdown,
.regs_valid = true,
.regs = {
0xffbd0000, /* gmac0 */