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 --- board/davinci/da830evm/da830evm.c | 64 +++++++++++++++++++++++++++++- include/asm-arm/arch-davinci/emac_defs.h | 1 + include/configs/da830evm.h | 1 + 3 files changed, 64 insertions(+), 2 deletions(-)
diff --git a/board/davinci/da830evm/da830evm.c b/board/davinci/da830evm/da830evm.c index aac5c5c..389753c 100644 --- a/board/davinci/da830evm/da830evm.c +++ b/board/davinci/da830evm/da830evm.c @@ -34,6 +34,8 @@
#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/io.h> @@ -69,6 +71,20 @@ 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 +93,8 @@ 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 +114,9 @@ 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 +188,44 @@ 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 */ diff --git a/include/asm-arm/arch-davinci/emac_defs.h b/include/asm-arm/arch-davinci/emac_defs.h index 96bc80e..75b8bf6 100644 --- a/include/asm-arm/arch-davinci/emac_defs.h +++ b/include/asm-arm/arch-davinci/emac_defs.h @@ -316,6 +316,7 @@ 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 { 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