cm_t335.c
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/*
* Board functions for Compulab CM-T335 board
*
* Copyright (C) 2013, Compulab Ltd - http://compulab.co.il/
*
* Author: Ilya Ledvich <ilya@compulab.co.il>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <miiphy.h>
#include <cpsw.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/hardware_am33xx.h>
#include <asm/io.h>
#include <asm/gpio.h>
#include "../common/eeprom.h"
DECLARE_GLOBAL_DATA_PTR;
/*
* Basic board specific setup. Pinmux has been handled already.
*/
int board_init(void)
{
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
gpmc_init();
#if defined(CONFIG_LED_STATUS) && defined(CONFIG_LED_STATUS_BOOT_ENABLE)
status_led_set(CONFIG_LED_STATUS_BOOT, CONFIG_LED_STATUS_OFF);
#endif
return 0;
}
#if defined (CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)
static void cpsw_control(int enabled)
{
/* VTP can be added here */
return;
}
static struct cpsw_slave_data cpsw_slave = {
.slave_reg_ofs = 0x208,
.sliver_reg_ofs = 0xd80,
.phy_addr = 0,
.phy_if = PHY_INTERFACE_MODE_RGMII,
};
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_slave,
.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,
};
/* PHY reset GPIO */
#define GPIO_PHY_RST GPIO_PIN(3, 7)
static void board_phy_init(void)
{
gpio_request(GPIO_PHY_RST, "phy_rst");
gpio_direction_output(GPIO_PHY_RST, 0);
mdelay(2);
gpio_set_value(GPIO_PHY_RST, 1);
mdelay(2);
}
static void get_efuse_mac_addr(uchar *enetaddr)
{
uint32_t mac_hi, mac_lo;
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
mac_lo = readl(&cdev->macid0l);
mac_hi = readl(&cdev->macid0h);
enetaddr[0] = mac_hi & 0xFF;
enetaddr[1] = (mac_hi & 0xFF00) >> 8;
enetaddr[2] = (mac_hi & 0xFF0000) >> 16;
enetaddr[3] = (mac_hi & 0xFF000000) >> 24;
enetaddr[4] = mac_lo & 0xFF;
enetaddr[5] = (mac_lo & 0xFF00) >> 8;
}
/*
* Routine: handle_mac_address
* Description: prepare MAC address for on-board Ethernet.
*/
static int handle_mac_address(void)
{
uchar enetaddr[6];
int rv;
rv = eth_getenv_enetaddr("ethaddr", enetaddr);
if (rv)
return 0;
rv = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
if (rv)
get_efuse_mac_addr(enetaddr);
if (!is_valid_ethaddr(enetaddr))
return -1;
return eth_env_set_enetaddr("ethaddr", enetaddr);
}
#define AR8051_PHY_DEBUG_ADDR_REG 0x1d
#define AR8051_PHY_DEBUG_DATA_REG 0x1e
#define AR8051_DEBUG_RGMII_CLK_DLY_REG 0x5
#define AR8051_RGMII_TX_CLK_DLY 0x100
int board_eth_init(bd_t *bis)
{
int rv, n = 0;
const char *devname;
struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
rv = handle_mac_address();
if (rv)
printf("No MAC address found!\n");
writel(RGMII_MODE_ENABLE | RGMII_INT_DELAY, &cdev->miisel);
board_phy_init();
rv = cpsw_register(&cpsw_data);
if (rv < 0)
printf("Error %d registering CPSW switch\n", rv);
else
n += rv;
/*
* CPSW RGMII Internal Delay Mode is not supported in all PVT
* operating points. So we must set the TX clock delay feature
* in the AR8051 PHY. Since we only support a single ethernet
* device, we only do this for the first instance.
*/
devname = miiphy_get_current_dev();
miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
AR8051_DEBUG_RGMII_CLK_DLY_REG);
miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
AR8051_RGMII_TX_CLK_DLY);
return n;
}
#endif /* CONFIG_DRIVER_TI_CPSW && !CONFIG_SPL_BUILD */