net: stmmac: mediatek: Disable the RX EEE function of the RTL PHY

[Detail]
The enablement of the RX EEE feature within the RTL PHY is known to
disrupt DMA initialization and software reset operations.

Consequently, to prevent such complications, this feature is disabled
by default.

Change-Id: I801bd5d0f61906d94e6551c064bd7e41273a367d
Signed-off-by: larry <larry.li@mediatek.com>

drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c

@@ -615,6 +615,7 @@ static int mediatek_dwmac_common_data(struct platform_device *pdev,
 				      struct plat_stmmacenet_data *plat,
 				      struct mediatek_dwmac_plat_data *priv_plat)
 {
+	struct device_node *np = pdev->dev.of_node;
 	int i;
 
 	plat->interface = priv_plat->phy_mode;
@@ -652,6 +653,14 @@ static int mediatek_dwmac_common_data(struct platform_device *pdev,
 			plat->tx_queues_cfg[i].tbs_en = 1;
 	}
 
+	/* EEE may lead to FSM error,
+	 * mask PRTYEN bit, if EEE is required
+	 */
+	if (of_property_read_bool(np, "snps,en-rx-lpi-clockgating"))
+		plat->rx_clk_runs_in_lpi = 0;
+	else
+		plat->rx_clk_runs_in_lpi = 1;
+
 	return 0;
 }