Change UEC PHY interface to RGMII on MPC8568MDS

Change UEC phy interface from GMII to RGMII on MPC8568MDS board

Because on MPC8568MDS, GMII interface is only recommended for 1000Mbps speed,
but RGMII interface can work at 10/100/1000Mbps, and RGMII interface works more stable.

Now both UEC1 and UEC2 can work properly under u-boot.

It is also in consistent with the kernel setting for 8568 UEC phy interface.

Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

drivers/qe/uec.c

@@ -424,6 +424,7 @@ static int uec_set_mac_if_mode(uec_private_t *uec, enet_interface_e if_mode)
 			upsmr |= (UPSMR_RPM | UPSMR_TBIM);
 			break;
 		case ENET_1000_RGMII_RXID:
+		case ENET_1000_RGMII_ID:
 		case ENET_1000_RGMII:
 			maccfg2 |= MACCFG2_INTERFACE_MODE_BYTE;
 			upsmr |= UPSMR_RPM;

drivers/qe/uec.h

@@ -642,6 +642,7 @@ typedef enum enet_interface {
 	ENET_100_RGMII,
 	ENET_1000_GMII,
 	ENET_1000_RGMII,
+	ENET_1000_RGMII_ID,
 	ENET_1000_RGMII_RXID,
 	ENET_1000_TBI,
 	ENET_1000_RTBI

drivers/qe/uec_phy.c

@@ -376,6 +376,29 @@ static int bcm_init(struct uec_mii_info *mii_info)
 	 return 0;
 }
 
+static int marvell_init(struct uec_mii_info *mii_info)
+{
+	struct eth_device *edev = mii_info->dev;
+	uec_private_t *uec = edev->priv;
+
+	if (uec->uec_info->enet_interface == ENET_1000_RGMII_ID) {
+		int temp;
+
+		temp = phy_read(mii_info, MII_M1111_PHY_EXT_CR);
+		temp |= (MII_M1111_RX_DELAY | MII_M1111_TX_DELAY);
+		phy_write(mii_info, MII_M1111_PHY_EXT_CR, temp);
+
+		temp = phy_read(mii_info, MII_M1111_PHY_EXT_SR);
+		temp &= ~MII_M1111_HWCFG_MODE_MASK;
+		temp |= MII_M1111_HWCFG_MODE_RGMII;
+		phy_write(mii_info, MII_M1111_PHY_EXT_SR, temp);
+
+		phy_write(mii_info, PHY_BMCR, PHY_BMCR_RESET);
+	}
+
+	return 0;
+}
+
 static int marvell_read_status (struct uec_mii_info *mii_info)
 {
 	u16 status;
@@ -538,6 +561,7 @@ static struct phy_info phy_info_marvell = {
 	.phy_id_mask = 0xffffff00,
 	.name = "Marvell 88E11x1",
 	.features = MII_GBIT_FEATURES,
+	.init = &marvell_init,
 	.config_aneg = &marvell_config_aneg,
 	.read_status = &marvell_read_status,
 	.ack_interrupt = &marvell_ack_interrupt,

drivers/qe/uec_phy.h

@@ -77,6 +77,14 @@
 #define MII_M1011_IMASK_INIT		0x6400
 #define MII_M1011_IMASK_CLEAR		0x0000
 
+/* 88E1111 PHY Register */
+#define MII_M1111_PHY_EXT_CR            0x14
+#define MII_M1111_RX_DELAY              0x80
+#define MII_M1111_TX_DELAY              0x2
+#define MII_M1111_PHY_EXT_SR            0x1b
+#define MII_M1111_HWCFG_MODE_MASK       0xf
+#define MII_M1111_HWCFG_MODE_RGMII      0xb
+
 #define MII_DM9161_SCR			0x10
 #define MII_DM9161_SCR_INIT		0x0610
 #define MII_DM9161_SCR_RMII_INIT	0x0710

include/configs/MPC8568MDS.h

@@ -362,7 +362,7 @@ extern unsigned long get_clock_freq(void);
 #define CFG_UEC1_TX_CLK         QE_CLK16
 #define CFG_UEC1_ETH_TYPE       GIGA_ETH
 #define CFG_UEC1_PHY_ADDR       7
-#define CFG_UEC1_INTERFACE_MODE ENET_1000_GMII
+#define CFG_UEC1_INTERFACE_MODE ENET_1000_RGMII_ID
 #endif
 
 #define CONFIG_UEC_ETH2         /* GETH2 */
@@ -373,7 +373,7 @@ extern unsigned long get_clock_freq(void);
 #define CFG_UEC2_TX_CLK         QE_CLK16
 #define CFG_UEC2_ETH_TYPE       GIGA_ETH
 #define CFG_UEC2_PHY_ADDR       1
-#define CFG_UEC2_INTERFACE_MODE ENET_1000_GMII
+#define CFG_UEC2_INTERFACE_MODE ENET_1000_RGMII_ID
 #endif
 #endif /* CONFIG_QE */