kernel: b53: detect revision of BCM5325

The revision is stored in a different register than it is in other
Broadcom switches.

Signed-off-by: Hauke Mehrtens <[email protected]>

SVN-Revision: 37995

target/linux/generic/files/drivers/net/phy/b53/b53_common.c

@@ -1305,7 +1305,12 @@ int b53_switch_detect(struct b53_device *dev)
 		}
 	}
 
-	return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID, &dev->core_rev);
+	if (dev->chip_id == BCM5325_DEVICE_ID)
+		return b53_read8(dev, B53_STAT_PAGE, B53_REV_ID_25,
+				 &dev->core_rev);
+	else
+		return b53_read8(dev, B53_MGMT_PAGE, B53_REV_ID,
+				 &dev->core_rev);
 }
 EXPORT_SYMBOL(b53_switch_detect);
 

target/linux/generic/files/drivers/net/phy/b53/b53_regs.h

@@ -135,6 +135,9 @@
 #define B53_DUPLEX_STAT_GE		0x08
 #define B53_DUPLEX_STAT_63XX		0x0c
 
+/* Revision ID register for BCM5325 */
+#define B53_REV_ID_25			0x50
+
 /* Strap Value (48 bit) */
 #define B53_STRAP_VALUE			0x70
 #define   SV_GMII_CTRL_115		BIT(27)