arm: atmel: add gmac support for sama5d3xek board

add gmac support for sama5d3xek board, the gmac embedded in:
  - sama5d33, sama5d34, sama5d35

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

arch/arm/cpu/armv7/at91/sama5d3_devices.c

@@ -144,6 +144,30 @@ void at91_macb_hw_init(void)
 	/* Enable clock */
 	at91_periph_clk_enable(ATMEL_ID_EMAC);
 }
+
+void at91_gmac_hw_init(void)
+{
+	at91_set_a_periph(AT91_PIO_PORTB, 0, 0);	/* GTX0 */
+	at91_set_a_periph(AT91_PIO_PORTB, 1, 0);	/* GTX1 */
+	at91_set_a_periph(AT91_PIO_PORTB, 2, 0);	/* GTX2 */
+	at91_set_a_periph(AT91_PIO_PORTB, 3, 0);	/* GTX3 */
+	at91_set_a_periph(AT91_PIO_PORTB, 4, 0);	/* GRX0 */
+	at91_set_a_periph(AT91_PIO_PORTB, 5, 0);	/* GRX1 */
+	at91_set_a_periph(AT91_PIO_PORTB, 6, 0);	/* GRX2 */
+	at91_set_a_periph(AT91_PIO_PORTB, 7, 0);	/* GRX3 */
+	at91_set_a_periph(AT91_PIO_PORTB, 8, 0);	/* GTXCK */
+	at91_set_a_periph(AT91_PIO_PORTB, 9, 0);	/* GTXEN */
+
+	at91_set_a_periph(AT91_PIO_PORTB, 11, 0);	/* GRXCK */
+	at91_set_a_periph(AT91_PIO_PORTB, 13, 0);	/* GRXER */
+
+	at91_set_a_periph(AT91_PIO_PORTB, 16, 0);	/* GMDC */
+	at91_set_a_periph(AT91_PIO_PORTB, 17, 0);	/* GMDIO */
+	at91_set_a_periph(AT91_PIO_PORTB, 18, 0);	/* G125CK */
+
+	/* Enable clock */
+	at91_periph_clk_enable(ATMEL_ID_GMAC);
+}
 #endif
 
 #ifdef CONFIG_LCD

arch/arm/include/asm/arch-at91/at91_common.h

@@ -10,6 +10,7 @@
 #define AT91_COMMON_H
 
 void at91_can_hw_init(void);
+void at91_gmac_hw_init(void);
 void at91_macb_hw_init(void);
 void at91_mci_hw_init(void);
 void at91_serial0_hw_init(void);

board/atmel/sama5d3xek/sama5d3xek.c

@@ -17,6 +17,7 @@
 #include <lcd.h>
 #include <atmel_lcdc.h>
 #include <atmel_mci.h>
+#include <micrel.h>
 #include <net.h>
 #include <netdev.h>
 
@@ -178,6 +179,8 @@ int board_init(void)
 #ifdef CONFIG_MACB
 	if (has_emac())
 		at91_macb_hw_init();
+	if (has_gmac())
+		at91_gmac_hw_init();
 #endif
 #ifdef CONFIG_LCD
 	if (has_lcdc())
@@ -193,6 +196,21 @@ int dram_init(void)
 	return 0;
 }
 
+int board_phy_config(struct phy_device *phydev)
+{
+	/* rx data delay */
+	ksz9021_phy_extended_write(phydev,
+				   MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x2222);
+	/* tx data delay */
+	ksz9021_phy_extended_write(phydev,
+				   MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x2222);
+	/* rx/tx clock delay */
+	ksz9021_phy_extended_write(phydev,
+				   MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf2f4);
+
+	return 0;
+}
+
 int board_eth_init(bd_t *bis)
 {
 	int rc = 0;
@@ -200,6 +218,8 @@ int board_eth_init(bd_t *bis)
 #ifdef CONFIG_MACB
 	if (has_emac())
 		rc = macb_eth_initialize(0, (void *)ATMEL_BASE_EMAC, 0x00);
+	if (has_gmac())
+		rc = macb_eth_initialize(0, (void *)ATMEL_BASE_GMAC, 0x00);
 #endif
 
 	return rc;

include/configs/sama5d3xek.h

@@ -136,6 +136,11 @@
 #define CONFIG_NET_MULTI
 #define CONFIG_NET_RETRY_COUNT		20
 #define CONFIG_MACB_SEARCH_PHY
+#define CONFIG_RGMII
+#define CONFIG_CMD_MII
+#define CONFIG_PHYLIB
+#define CONFIG_PHY_MICREL
+#define CONFIG_PHY_MICREL_KSZ9021
 
 /* MMC */
 #define CONFIG_CMD_MMC