rt2x00: rt2800lib: Fix rx path on SoC devices

Restore the rfcsr initialization for RT305x SoC devices which was removed
by "rt2x00: Finish rt3070 support in rt2800 register initialization.".

This fixes the rx path on SoC devices.
Signed-off-by: NHelmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/rt2800lib.c

@@ -1707,7 +1707,8 @@ int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
 	if (!rt2x00_rt(rt2x00dev, RT3070) &&
 	    !rt2x00_rt(rt2x00dev, RT3071) &&
 	    !rt2x00_rt(rt2x00dev, RT3090) &&
-	    !rt2x00_rt(rt2x00dev, RT3390))
+	    !rt2x00_rt(rt2x00dev, RT3390) &&
+	    !(rt2x00_is_soc(rt2x00dev) && rt2x00_rt(rt2x00dev, RT2872)))
 		return 0;
 
 	/*
@@ -1775,6 +1776,37 @@ int rt2800_init_rfcsr(struct rt2x00_dev *rt2x00dev)
 		rt2800_rfcsr_write(rt2x00dev, 29, 0x8f);
 		rt2800_rfcsr_write(rt2x00dev, 30, 0x20);
 		rt2800_rfcsr_write(rt2x00dev, 31, 0x0f);
+	} else if (rt2x00_rt(rt2x00dev, RT2872)) {
+		rt2800_rfcsr_write(rt2x00dev, 0, 0x50);
+		rt2800_rfcsr_write(rt2x00dev, 1, 0x01);
+		rt2800_rfcsr_write(rt2x00dev, 2, 0xf7);
+		rt2800_rfcsr_write(rt2x00dev, 3, 0x75);
+		rt2800_rfcsr_write(rt2x00dev, 4, 0x40);
+		rt2800_rfcsr_write(rt2x00dev, 5, 0x03);
+		rt2800_rfcsr_write(rt2x00dev, 6, 0x02);
+		rt2800_rfcsr_write(rt2x00dev, 7, 0x50);
+		rt2800_rfcsr_write(rt2x00dev, 8, 0x39);
+		rt2800_rfcsr_write(rt2x00dev, 9, 0x0f);
+		rt2800_rfcsr_write(rt2x00dev, 10, 0x60);
+		rt2800_rfcsr_write(rt2x00dev, 11, 0x21);
+		rt2800_rfcsr_write(rt2x00dev, 12, 0x75);
+		rt2800_rfcsr_write(rt2x00dev, 13, 0x75);
+		rt2800_rfcsr_write(rt2x00dev, 14, 0x90);
+		rt2800_rfcsr_write(rt2x00dev, 15, 0x58);
+		rt2800_rfcsr_write(rt2x00dev, 16, 0xb3);
+		rt2800_rfcsr_write(rt2x00dev, 17, 0x92);
+		rt2800_rfcsr_write(rt2x00dev, 18, 0x2c);
+		rt2800_rfcsr_write(rt2x00dev, 19, 0x02);
+		rt2800_rfcsr_write(rt2x00dev, 20, 0xba);
+		rt2800_rfcsr_write(rt2x00dev, 21, 0xdb);
+		rt2800_rfcsr_write(rt2x00dev, 22, 0x00);
+		rt2800_rfcsr_write(rt2x00dev, 23, 0x31);
+		rt2800_rfcsr_write(rt2x00dev, 24, 0x08);
+		rt2800_rfcsr_write(rt2x00dev, 25, 0x01);
+		rt2800_rfcsr_write(rt2x00dev, 26, 0x25);
+		rt2800_rfcsr_write(rt2x00dev, 27, 0x23);
+		rt2800_rfcsr_write(rt2x00dev, 28, 0x13);
+		rt2800_rfcsr_write(rt2x00dev, 29, 0x83);
 	}
 
 	if (rt2x00_rt_rev_lt(rt2x00dev, RT3070, REV_RT3070F)) {