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da830evm: Add support for TI EMAC

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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>
This commit is contained in:
Nick Thompson 2010-02-17 20:37:24 -05:00 committed by Tom Rix
parent d8775d03f3
commit 37cffdad06
3 changed files with 65 additions and 2 deletions
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65
board/davinci/da830evm/da830evm.c
View file

@ -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 @@ static const struct pinmux_config emifa_nand_pins[] = {
{ 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 @@ static const struct pinmux_config uart_pins[] = {
/* 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 @@ static const struct pinmux_resource pinmuxes[] = {
#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 @@ int board_init(void)
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 */

1
include/asm-arm/arch-davinci/emac_defs.h
View file

@ -367,6 +367,7 @@ typedef struct {
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
{

1
include/configs/da830evm.h
View file

@ -27,6 +27,7 @@
/*
* Board
*/
#define CONFIG_DRIVER_TI_EMAC
/*
* SoC Configuration