[PATCH 1/2] phy: rockchip: naneng-combphy: Enable U3 port for USB3OTG on RK3568
    Jonas Karlman 
    jonas at kwiboo.se
       
    Sun Oct 19 17:09:40 CEST 2025
    
    
  
The USB OTG U3 port may have been disabled early, add support to the
COMBPHY driver to re-enable the U3 port.
This matches changes made in the Linux commit 7bb14b61b7d0 ("phy:
rockchip: naneng-combphy: Enable U3 OTG port for RK3568").
Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 drivers/phy/rockchip/phy-rockchip-naneng-combphy.c | 8 ++++++++
 1 file changed, 8 insertions(+)
diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
index d602f965d6aa..82353ae7678c 100644
--- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
+++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
@@ -399,6 +399,14 @@ static int rk3568_combphy_cfg(struct rockchip_combphy_priv *priv)
 		param_write(priv->phy_grf, &cfg->pipe_txcomp_sel, false);
 		param_write(priv->phy_grf, &cfg->pipe_txelec_sel, false);
 		param_write(priv->phy_grf, &cfg->usb_mode_set, true);
+		switch (priv->id) {
+		case 0:
+			param_write(priv->pipe_grf, &cfg->u3otg0_port_en, true);
+			break;
+		case 1:
+			param_write(priv->pipe_grf, &cfg->u3otg1_port_en, true);
+			break;
+		}
 		break;
 	case PHY_TYPE_SATA:
 		writel(0x41, priv->mmio + 0x38);
-- 
2.51.0
    
    
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