ARM: AM43xx: Add CPSW support to AM43xx EPOS and GP EVM

Adding support for CPSW to AM43xx EPOS nad GP EVM which is connected
to RMII and RGMII phy respectively and enable cpsw in config.

Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>

2 files changed, 142 insertions, 2 deletions

diff --git a/board/ti/am43xx/board.c b/board/ti/am43xx/board.c
index 95fd13751b..0c9f0ef168 100644
--- a/board/ti/am43xx/board.c
+++ b/board/ti/am43xx/board.c
@@ -19,9 +19,15 @@
 #include <asm/arch/gpio.h>
 #include <asm/emif.h>
 #include "board.h"
+#include <miiphy.h>
+#include <cpsw.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+#ifndef CONFIG_SPL_BUILD
+static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
+#endif
+
 /*
  * Read header information from EEPROM into global structure.
  */
@@ -402,3 +408,97 @@ int board_late_init(void)
 	return 0;
 }
 #endif
+
+#ifdef CONFIG_DRIVER_TI_CPSW
+
+static void cpsw_control(int enabled)
+{
+	/* Additional controls can be added here */
+	return;
+}
+
+static struct cpsw_slave_data cpsw_slaves[] = {
+	{
+		.slave_reg_ofs	= 0x208,
+		.sliver_reg_ofs	= 0xd80,
+		.phy_addr	= 16,
+	},
+	{
+		.slave_reg_ofs	= 0x308,
+		.sliver_reg_ofs	= 0xdc0,
+		.phy_addr	= 1,
+	},
+};
+
+static struct cpsw_platform_data cpsw_data = {
+	.mdio_base		= CPSW_MDIO_BASE,
+	.cpsw_base		= CPSW_BASE,
+	.mdio_div		= 0xff,
+	.channels		= 8,
+	.cpdma_reg_ofs		= 0x800,
+	.slaves			= 1,
+	.slave_data		= cpsw_slaves,
+	.ale_reg_ofs		= 0xd00,
+	.ale_entries		= 1024,
+	.host_port_reg_ofs	= 0x108,
+	.hw_stats_reg_ofs	= 0x900,
+	.bd_ram_ofs		= 0x2000,
+	.mac_control		= (1 << 5),
+	.control		= cpsw_control,
+	.host_port_num		= 0,
+	.version		= CPSW_CTRL_VERSION_2,
+};
+
+int board_eth_init(bd_t *bis)
+{
+	int rv;
+	uint8_t mac_addr[6];
+	uint32_t mac_hi, mac_lo;
+
+	/* try reading mac address from efuse */
+	mac_lo = readl(&cdev->macid0l);
+	mac_hi = readl(&cdev->macid0h);
+	mac_addr[0] = mac_hi & 0xFF;
+	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+	mac_addr[4] = mac_lo & 0xFF;
+	mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+	if (!getenv("ethaddr")) {
+		puts("<ethaddr> not set. Validating first E-fuse MAC\n");
+		if (is_valid_ether_addr(mac_addr))
+			eth_setenv_enetaddr("ethaddr", mac_addr);
+	}
+
+	mac_lo = readl(&cdev->macid1l);
+	mac_hi = readl(&cdev->macid1h);
+	mac_addr[0] = mac_hi & 0xFF;
+	mac_addr[1] = (mac_hi & 0xFF00) >> 8;
+	mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
+	mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
+	mac_addr[4] = mac_lo & 0xFF;
+	mac_addr[5] = (mac_lo & 0xFF00) >> 8;
+
+	if (!getenv("eth1addr")) {
+		if (is_valid_ether_addr(mac_addr))
+			eth_setenv_enetaddr("eth1addr", mac_addr);
+	}
+
+	if (board_is_eposevm()) {
+		writel(RMII_MODE_ENABLE | RMII_CHIPCKL_ENABLE, &cdev->miisel);
+		cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RMII;
+		cpsw_slaves[0].phy_addr = 16;
+	} else {
+		writel(RGMII_MODE_ENABLE, &cdev->miisel);
+		cpsw_slaves[0].phy_if = PHY_INTERFACE_MODE_RGMII;
+		cpsw_slaves[0].phy_addr = 0;
+	}
+
+	rv = cpsw_register(&cpsw_data);
+	if (rv < 0)
+		printf("Error %d registering CPSW switch\n", rv);
+
+	return rv;
+}
+#endif
diff --git a/board/ti/am43xx/mux.c b/board/ti/am43xx/mux.c
index c330a81c4a..77c53d2e90 100644
--- a/board/ti/am43xx/mux.c
+++ b/board/ti/am43xx/mux.c
@@ -11,6 +11,41 @@
 #include <asm/arch/mux.h>
 #include "board.h"
 
+static struct module_pin_mux rmii1_pin_mux[] = {
+	{OFFSET(mii1_txen), MODE(1)},			/* RMII1_TXEN */
+	{OFFSET(mii1_txd1), MODE(1)},			/* RMII1_TD1 */
+	{OFFSET(mii1_txd0), MODE(1)},			/* RMII1_TD0 */
+	{OFFSET(mii1_rxd1), MODE(1) | RXACTIVE},	/* RMII1_RD1 */
+	{OFFSET(mii1_rxd0), MODE(1) | RXACTIVE},	/* RMII1_RD0 */
+	{OFFSET(mii1_rxdv), MODE(1) | RXACTIVE},	/* RMII1_RXDV */
+	{OFFSET(mii1_crs), MODE(1) | RXACTIVE},		/* RMII1_CRS_DV */
+	{OFFSET(mii1_rxerr), MODE(1) | RXACTIVE},	/* RMII1_RXERR */
+	{OFFSET(rmii1_refclk), MODE(0) | RXACTIVE},	/* RMII1_refclk */
+	{-1},
+};
+
+static struct module_pin_mux rgmii1_pin_mux[] = {
+	{OFFSET(mii1_txen), MODE(2)},			/* RGMII1_TCTL */
+	{OFFSET(mii1_rxdv), MODE(2) | RXACTIVE},	/* RGMII1_RCTL */
+	{OFFSET(mii1_txd3), MODE(2)},			/* RGMII1_TD3 */
+	{OFFSET(mii1_txd2), MODE(2)},			/* RGMII1_TD2 */
+	{OFFSET(mii1_txd1), MODE(2)},			/* RGMII1_TD1 */
+	{OFFSET(mii1_txd0), MODE(2)},			/* RGMII1_TD0 */
+	{OFFSET(mii1_txclk), MODE(2)},			/* RGMII1_TCLK */
+	{OFFSET(mii1_rxclk), MODE(2) | RXACTIVE},	/* RGMII1_RCLK */
+	{OFFSET(mii1_rxd3), MODE(2) | RXACTIVE},	/* RGMII1_RD3 */
+	{OFFSET(mii1_rxd2), MODE(2) | RXACTIVE},	/* RGMII1_RD2 */
+	{OFFSET(mii1_rxd1), MODE(2) | RXACTIVE},	/* RGMII1_RD1 */
+	{OFFSET(mii1_rxd0), MODE(2) | RXACTIVE},	/* RGMII1_RD0 */
+	{-1},
+};
+
+static struct module_pin_mux mdio_pin_mux[] = {
+	{OFFSET(mdio_data), MODE(0) | RXACTIVE | PULLUP_EN},/* MDIO_DATA */
+	{OFFSET(mdio_clk), MODE(0) | PULLUP_EN},	/* MDIO_CLK */
+	{-1},
+};
+
 static struct module_pin_mux uart0_pin_mux[] = {
 	{OFFSET(uart0_rxd), (MODE(0) | PULLUP_EN | RXACTIVE | SLEWCTRL)},
 	{OFFSET(uart0_txd), (MODE(0) | PULLUDDIS | PULLUP_EN | SLEWCTRL)},
@@ -57,10 +92,15 @@ void enable_board_pin_mux(void)
 {
 	configure_module_pin_mux(mmc0_pin_mux);
 	configure_module_pin_mux(i2c0_pin_mux);
+	configure_module_pin_mux(mdio_pin_mux);
 
-	if (board_is_gpevm())
+	if (board_is_gpevm()) {
 		configure_module_pin_mux(gpio5_7_pin_mux);
-	configure_module_pin_mux(qspi_pin_mux);
+		configure_module_pin_mux(rgmii1_pin_mux);
+	} else if (board_is_eposevm()) {
+		configure_module_pin_mux(rmii1_pin_mux);
+		configure_module_pin_mux(qspi_pin_mux);
+	}
 }
 
 void enable_i2c0_pin_mux(void)