LXR uboot/board/compulab/cm_t335/cm

   1/*
   2 * Board functions for Compulab CM-T335 board
   3 *
   4 * Copyright (C) 2013, Compulab Ltd - http://compulab.co.il/
   5 *
   6 * Author: Ilya Ledvich <ilya@compulab.co.il>
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11#include <common.h>
  12#include <errno.h>
  13#include <miiphy.h>
  14#include <cpsw.h>
  15
  16#include <asm/arch/sys_proto.h>
  17#include <asm/arch/hardware_am33xx.h>
  18#include <asm/io.h>
  19#include <asm/gpio.h>
  20
  21#include "../common/eeprom.h"
  22
  23DECLARE_GLOBAL_DATA_PTR;
  24
  25/*
  26 * Basic board specific setup.  Pinmux has been handled already.
  27 */
  28int board_init(void)
  29{
  30        gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
  31
  32        gpmc_init();
  33
  34#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  35        status_led_set(STATUS_LED_BOOT, STATUS_LED_OFF);
  36#endif
  37        return 0;
  38}
  39
  40#if defined (CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)
  41static void cpsw_control(int enabled)
  42{
  43        /* VTP can be added here */
  44        return;
  45}
  46
  47static struct cpsw_slave_data cpsw_slave = {
  48        .slave_reg_ofs  = 0x208,
  49        .sliver_reg_ofs = 0xd80,
  50        .phy_addr       = 0,
  51        .phy_if         = PHY_INTERFACE_MODE_RGMII,
  52};
  53
  54static struct cpsw_platform_data cpsw_data = {
  55        .mdio_base              = CPSW_MDIO_BASE,
  56        .cpsw_base              = CPSW_BASE,
  57        .mdio_div               = 0xff,
  58        .channels               = 8,
  59        .cpdma_reg_ofs          = 0x800,
  60        .slaves                 = 1,
  61        .slave_data             = &cpsw_slave,
  62        .ale_reg_ofs            = 0xd00,
  63        .ale_entries            = 1024,
  64        .host_port_reg_ofs      = 0x108,
  65        .hw_stats_reg_ofs       = 0x900,
  66        .bd_ram_ofs             = 0x2000,
  67        .mac_control            = (1 << 5),
  68        .control                = cpsw_control,
  69        .host_port_num          = 0,
  70        .version                = CPSW_CTRL_VERSION_2,
  71};
  72
  73/* PHY reset GPIO */
  74#define GPIO_PHY_RST            GPIO_PIN(3, 7)
  75
  76static void board_phy_init(void)
  77{
  78        gpio_request(GPIO_PHY_RST, "phy_rst");
  79        gpio_direction_output(GPIO_PHY_RST, 0);
  80        mdelay(2);
  81        gpio_set_value(GPIO_PHY_RST, 1);
  82        mdelay(2);
  83}
  84
  85static void get_efuse_mac_addr(uchar *enetaddr)
  86{
  87        uint32_t mac_hi, mac_lo;
  88        struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
  89
  90        mac_lo = readl(&cdev->macid0l);
  91        mac_hi = readl(&cdev->macid0h);
  92        enetaddr[0] = mac_hi & 0xFF;
  93        enetaddr[1] = (mac_hi & 0xFF00) >> 8;
  94        enetaddr[2] = (mac_hi & 0xFF0000) >> 16;
  95        enetaddr[3] = (mac_hi & 0xFF000000) >> 24;
  96        enetaddr[4] = mac_lo & 0xFF;
  97        enetaddr[5] = (mac_lo & 0xFF00) >> 8;
  98}
  99
 100/*
 101 * Routine: handle_mac_address
 102 * Description: prepare MAC address for on-board Ethernet.
 103 */
 104static int handle_mac_address(void)
 105{
 106        uchar enetaddr[6];
 107        int rv;
 108
 109        rv = eth_getenv_enetaddr("ethaddr", enetaddr);
 110        if (rv)
 111                return 0;
 112
 113        rv = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
 114        if (rv)
 115                get_efuse_mac_addr(enetaddr);
 116
 117        if (!is_valid_ethaddr(enetaddr))
 118                return -1;
 119
 120        return eth_setenv_enetaddr("ethaddr", enetaddr);
 121}
 122
 123#define AR8051_PHY_DEBUG_ADDR_REG       0x1d
 124#define AR8051_PHY_DEBUG_DATA_REG       0x1e
 125#define AR8051_DEBUG_RGMII_CLK_DLY_REG  0x5
 126#define AR8051_RGMII_TX_CLK_DLY         0x100
 127
 128int board_eth_init(bd_t *bis)
 129{
 130        int rv, n = 0;
 131        const char *devname;
 132        struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
 133
 134        rv = handle_mac_address();
 135        if (rv)
 136                printf("No MAC address found!\n");
 137
 138        writel(RGMII_MODE_ENABLE | RGMII_INT_DELAY, &cdev->miisel);
 139
 140        board_phy_init();
 141
 142        rv = cpsw_register(&cpsw_data);
 143        if (rv < 0)
 144                printf("Error %d registering CPSW switch\n", rv);
 145        else
 146                n += rv;
 147
 148        /*
 149         * CPSW RGMII Internal Delay Mode is not supported in all PVT
 150         * operating points.  So we must set the TX clock delay feature
 151         * in the AR8051 PHY.  Since we only support a single ethernet
 152         * device, we only do this for the first instance.
 153         */
 154        devname = miiphy_get_current_dev();
 155
 156        miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
 157                     AR8051_DEBUG_RGMII_CLK_DLY_REG);
 158        miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
 159                     AR8051_RGMII_TX_CLK_DLY);
 160        return n;
 161}
 162#endif /* CONFIG_DRIVER_TI_CPSW && !CONFIG_SPL_BUILD */
 163