ralink: only apply ephy1 fixup if the phy is present

this broke e1700 lan2 as the fixup was applied to the phy inside the mt7530.

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 43200

target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620a.c

@@ -72,6 +72,8 @@
 
 #define GSW_REG_IMR		0x7008
 #define GSW_REG_ISR		0x700c
+#define GSW_REG_GPC1		0x7014
+#define GSW_PHY1_DISABLE	BIT(25)
 
 #define SYSC_REG_CFG1		0x14
 
@@ -414,6 +416,8 @@ static void gsw_hw_init(struct mt7620_gsw *gsw)
 	rt_sysc_w32(rt_sysc_r32(SYSC_REG_CFG1) | BIT(8), SYSC_REG_CFG1);
 	gsw_w32(gsw, gsw_r32(gsw, GSW_REG_CKGCR) & ~(0x3 << 4), GSW_REG_CKGCR);
 
+	/* EPHY1 fixup - only run if the ephy is enabled */
+	if (gsw_r32(gsw, GSW_REG_GPC1) & GSW_PHY1_DISABLE == GSW_PHY1_DISABLE) {
 		/*correct  PHY  setting L3.0 BGA*/
 		_mt7620_mii_write(gsw, 1, 31, 0x4000); //global, page 4
 
@@ -451,6 +455,7 @@ static void gsw_hw_init(struct mt7620_gsw *gsw)
 		}
 		_mt7620_mii_write(gsw, 1, 31, 0x1000); //global, page 1
 		_mt7620_mii_write(gsw, 1, 17, 0xe7f8);
+	}
 
 	_mt7620_mii_write(gsw, 1, 31, 0x8000); //local, page 0
 	_mt7620_mii_write(gsw, 0, 30, 0xa000);