da830evm: Add support for TI EMAC
Adds support for ethernet networking on the da830evm platform.
This platform uses an SoC EMAC interface and a 3 port ethernet
switch as a PHY with an RMII interface. The PHY also has a i2c
interface for configuring the switch functions.
Signed-off-by: Nick Thompson <nick.thompson@ge.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/board/davinci/da830evm/da830evm.c b/board/davinci/da830evm/da830evm.c
index aac5c5c..ed668af 100644
--- a/board/davinci/da830evm/da830evm.c
+++ b/board/davinci/da830evm/da830evm.c
@@ -34,8 +34,11 @@
#include <common.h>
#include <i2c.h>
+#include <net.h>
+#include <netdev.h>
#include <asm/arch/hardware.h>
#include <asm/arch/emif_defs.h>
+#include <asm/arch/emac_defs.h>
#include <asm/io.h>
#include "../common/misc.h"
@@ -69,6 +72,20 @@
{ pinmux[18], 1, 5 },
};
+/* EMAC PHY interface pins */
+static const struct pinmux_config emac_pins[] = {
+ { pinmux[9], 0, 5 },
+ { pinmux[10], 2, 1 },
+ { pinmux[10], 2, 2 },
+ { pinmux[10], 2, 3 },
+ { pinmux[10], 2, 4 },
+ { pinmux[10], 2, 5 },
+ { pinmux[10], 2, 6 },
+ { pinmux[10], 2, 7 },
+ { pinmux[11], 2, 0 },
+ { pinmux[11], 2, 1 },
+};
+
/* UART pin muxer settings */
static const struct pinmux_config uart_pins[] = {
{ pinmux[8], 2, 7 },
@@ -77,8 +94,8 @@
/* I2C pin muxer settings */
static const struct pinmux_config i2c_pins[] = {
- { pinmux[9], 2, 3 },
- { pinmux[9], 2, 4 }
+ { pinmux[8], 2, 3 },
+ { pinmux[8], 2, 4 }
};
/* USB0_DRVVBUS pin muxer settings */
@@ -98,6 +115,9 @@
#ifdef CONFIG_USE_NAND
PINMUX_ITEM(emifa_nand_pins),
#endif
+#if defined(CONFIG_DRIVER_TI_EMAC)
+ PINMUX_ITEM(emac_pins),
+#endif
};
int board_init(void)
@@ -169,3 +189,44 @@
return(0);
}
+
+#if defined(CONFIG_DRIVER_TI_EMAC)
+
+#define PHY_SW_I2C_ADDR 0x5f /* Address of PHY on i2c bus */
+
+/*
+ * Initializes on-board ethernet controllers.
+ */
+int board_eth_init(bd_t *bis)
+{
+ u_int8_t mac_addr[6];
+ u_int8_t switch_start_cmd[2] = { 0x01, 0x23 };
+
+ /* Read Ethernet MAC address from EEPROM */
+ if (dvevm_read_mac_address(mac_addr))
+ /* set address env if not already set */
+ dv_configure_mac_address(mac_addr);
+
+ /* read the address back from env */
+ if (!eth_getenv_enetaddr("ethaddr", mac_addr))
+ return -1;
+
+ /* provide the resulting addr to the driver */
+ davinci_eth_set_mac_addr(mac_addr);
+
+ /* enable the Ethernet switch in the 3 port PHY */
+ if (i2c_write(PHY_SW_I2C_ADDR, 0, 0,
+ switch_start_cmd, sizeof(switch_start_cmd))) {
+ printf("Ethernet switch start failed!\n");
+ return -1;
+ }
+
+ /* finally, initialise the driver */
+ if (!davinci_emac_initialize()) {
+ printf("Error: Ethernet init failed!\n");
+ return -1;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_DRIVER_TI_EMAC */
diff --git a/include/asm-arm/arch-davinci/emac_defs.h b/include/asm-arm/arch-davinci/emac_defs.h
index e313263..b0ec8f5 100644
--- a/include/asm-arm/arch-davinci/emac_defs.h
+++ b/include/asm-arm/arch-davinci/emac_defs.h
@@ -367,6 +367,7 @@
int davinci_eth_phy_read(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t *data);
int davinci_eth_phy_write(u_int8_t phy_addr, u_int8_t reg_num, u_int16_t data);
+void davinci_eth_set_mac_addr(const u_int8_t *addr);
typedef struct
{
diff --git a/include/configs/da830evm.h b/include/configs/da830evm.h
index 65747fb..0f58e11 100644
--- a/include/configs/da830evm.h
+++ b/include/configs/da830evm.h
@@ -27,6 +27,7 @@
/*
* Board
*/
+#define CONFIG_DRIVER_TI_EMAC
/*
* SoC Configuration