phy: rockchip: naneng-combphy: Force detect Rx for RK356X SoCs

Follow internal design requirement.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Change-Id: I1b304cfab4a65c88cfdab6f59922f297fa35e742

drivers/phy/rockchip/phy-rockchip-naneng-combphy.c

@@ -68,6 +68,7 @@ struct rockchip_combphy_cfg {
 	const int num_clks;
 	const struct clk_bulk_data *clks;
 	const struct rockchip_combphy_grfcfg *grfcfg;
+	bool force_det_out; /* Tx detect Rx errata */
 	int (*combphy_cfg)(struct rockchip_combphy_priv *priv);
 };
 
@@ -130,6 +131,7 @@ static u32 rockchip_combphy_is_ready(struct rockchip_combphy_priv *priv)
 static int rockchip_combphy_pcie_init(struct rockchip_combphy_priv *priv)
 {
 	int ret = 0;
+	u32 val;
 
 	if (priv->cfg->combphy_cfg) {
 		ret = priv->cfg->combphy_cfg(priv);
@@ -139,6 +141,12 @@ static int rockchip_combphy_pcie_init(struct rockchip_combphy_priv *priv)
 		}
 	}
 
+	if (priv->cfg->force_det_out) {
+		val = readl(priv->mmio + (0xd << 2));
+		val |= BIT(5);
+		writel(val, priv->mmio + (0xd << 2));
+	}
+
 	return ret;
 }
 
@@ -622,6 +630,7 @@ static const struct rockchip_combphy_cfg rk3568_combphy_cfgs = {
 	.clks		= rk3568_clks,
 	.grfcfg		= &rk3568_combphy_grfcfgs,
 	.combphy_cfg	= rk3568_combphy_cfg,
+	.force_det_out	= true,
 };
 
 static const struct of_device_id rockchip_combphy_of_match[] = {