diff options
Diffstat (limited to 'board/compulab/cm_t335/cm_t335.c')
| -rw-r--r-- | board/compulab/cm_t335/cm_t335.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/board/compulab/cm_t335/cm_t335.c b/board/compulab/cm_t335/cm_t335.c new file mode 100644 index 000000000..a31896289 --- /dev/null +++ b/board/compulab/cm_t335/cm_t335.c @@ -0,0 +1,159 @@ +/* + * 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(); + + 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_id = 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); + if (rv) + get_efuse_mac_addr(enetaddr); + + if (!is_valid_ether_addr(enetaddr)) + return -1; + + return eth_setenv_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 */ |