LXR uboot/board/compulab/cm_t54/cm

   1/*
   2 * Board functions for Compulab CM-T54 board
   3 *
   4 * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
   5 *
   6 * Author: Dmitry Lifshitz <lifshitz@compulab.co.il>
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11#include <common.h>
  12#include <fdt_support.h>
  13#include <usb.h>
  14#include <mmc.h>
  15#include <palmas.h>
  16#include <spl.h>
  17
  18#include <asm/gpio.h>
  19#include <asm/arch/sys_proto.h>
  20#include <asm/arch/mmc_host_def.h>
  21#include <asm/arch/clock.h>
  22#include <asm/arch/ehci.h>
  23#include <asm/ehci-omap.h>
  24
  25#include "../common/eeprom.h"
  26
  27#define DIE_ID_REG_BASE         (OMAP54XX_L4_CORE_BASE + 0x2000)
  28#define DIE_ID_REG_OFFSET       0x200
  29
  30DECLARE_GLOBAL_DATA_PTR;
  31
  32#if !defined(CONFIG_SPL_BUILD)
  33inline void set_muxconf_regs(void){};
  34#endif
  35
  36const struct omap_sysinfo sysinfo = {
  37        "Board: CM-T54\n"
  38};
  39
  40/*
  41 * Routine: board_init
  42 * Description: hardware init.
  43 */
  44int board_init(void)
  45{
  46        gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
  47
  48        return 0;
  49}
  50
  51/*
  52 * Routine: cm_t54_palmas_regulator_set
  53 * Description:  select voltage and turn on/off Palmas PMIC regulator.
  54 */
  55static int cm_t54_palmas_regulator_set(u8 vreg, u8 vval, u8 creg, u8 cval)
  56{
  57        int err;
  58
  59        /* Setup voltage */
  60        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, vreg, vval);
  61        if (err) {
  62                printf("cm_t54: could not set regulator 0x%02x voltage : %d\n",
  63                       vreg, err);
  64                return err;
  65        }
  66
  67        /* Turn on/off regulator */
  68        err = palmas_i2c_write_u8(TWL603X_CHIP_P1, creg, cval);
  69        if (err) {
  70                printf("cm_t54: could not turn on/off regulator 0x%02x : %d\n",
  71                       creg, err);
  72                return err;
  73        }
  74
  75        return 0;
  76}
  77
  78/*
  79 * Routine: mmc_get_env_part
  80 * Description:  setup environment storage device partition.
  81 */
  82#ifdef CONFIG_SYS_MMC_ENV_PART
  83uint mmc_get_env_part(struct mmc *mmc)
  84{
  85        u32 bootmode = gd->arch.omap_boot_mode;
  86        uint bootpart = CONFIG_SYS_MMC_ENV_PART;
  87
  88        /*
  89         * If booted from eMMC boot partition then force eMMC
  90         * FIRST boot partition to be env storage
  91         */
  92        if (bootmode == BOOT_DEVICE_MMC2)
  93                bootpart = 1;
  94
  95        return bootpart;
  96}
  97#endif
  98
  99#if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 100#define SB_T54_CD_GPIO 228
 101#define SB_T54_WP_GPIO 229
 102
 103int board_mmc_init(bd_t *bis)
 104{
 105        int ret0, ret1;
 106
 107        ret0 = omap_mmc_init(0, 0, 0, SB_T54_CD_GPIO, SB_T54_WP_GPIO);
 108        if (ret0)
 109                printf("cm_t54: failed to initialize mmc0\n");
 110
 111        ret1 = omap_mmc_init(1, 0, 0, -1, -1);
 112        if (ret1)
 113                printf("cm_t54: failed to initialize mmc1\n");
 114
 115        if (ret0 && ret1)
 116                return -1;
 117
 118        return 0;
 119}
 120#endif
 121
 122#ifdef CONFIG_USB_HOST_ETHER
 123
 124int ft_board_setup(void *blob, bd_t *bd)
 125{
 126        uint8_t enetaddr[6];
 127
 128        /* MAC addr */
 129        if (eth_getenv_enetaddr("usbethaddr", enetaddr)) {
 130                fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
 131                                     enetaddr, 6, 1);
 132        }
 133
 134        return 0;
 135}
 136
 137static void generate_mac_addr(uint8_t *enetaddr)
 138{
 139        int reg;
 140
 141        reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
 142
 143        /*
 144         * create a fake MAC address from the processor ID code.
 145         * first byte is 0x02 to signify locally administered.
 146         */
 147        enetaddr[0] = 0x02;
 148        enetaddr[1] = readl(reg + 0x10) & 0xff;
 149        enetaddr[2] = readl(reg + 0xC) & 0xff;
 150        enetaddr[3] = readl(reg + 0x8) & 0xff;
 151        enetaddr[4] = readl(reg) & 0xff;
 152        enetaddr[5] = (readl(reg) >> 8) & 0xff;
 153}
 154
 155/*
 156 * Routine: handle_mac_address
 157 * Description: prepare MAC address for on-board Ethernet.
 158 */
 159static int handle_mac_address(void)
 160{
 161        uint8_t enetaddr[6];
 162        int ret;
 163
 164        ret = eth_getenv_enetaddr("usbethaddr", enetaddr);
 165        if (ret)
 166                return 0;
 167
 168        ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
 169        if (ret || !is_valid_ethaddr(enetaddr))
 170                generate_mac_addr(enetaddr);
 171
 172        if (!is_valid_ethaddr(enetaddr))
 173                return -1;
 174
 175        return eth_setenv_enetaddr("usbethaddr", enetaddr);
 176}
 177
 178int board_eth_init(bd_t *bis)
 179{
 180        return handle_mac_address();
 181}
 182#endif
 183
 184#ifdef CONFIG_USB_EHCI
 185static struct omap_usbhs_board_data usbhs_bdata = {
 186        .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 187        .port_mode[1] = OMAP_EHCI_PORT_MODE_HSIC,
 188        .port_mode[2] = OMAP_EHCI_PORT_MODE_HSIC,
 189};
 190
 191static void setup_host_clocks(bool enable)
 192{
 193        int usbhost_clk = OPTFCLKEN_HSIC60M_P3_CLK |
 194                          OPTFCLKEN_HSIC480M_P3_CLK |
 195                          OPTFCLKEN_HSIC60M_P2_CLK |
 196                          OPTFCLKEN_HSIC480M_P2_CLK |
 197                          OPTFCLKEN_UTMI_P3_CLK |
 198                          OPTFCLKEN_UTMI_P2_CLK;
 199
 200        int usbtll_clk = OPTFCLKEN_USB_CH1_CLK_ENABLE |
 201                         OPTFCLKEN_USB_CH2_CLK_ENABLE;
 202
 203        int usbhub_clk = CKOBUFFER_CLK_ENABLE_MASK;
 204
 205        if (enable) {
 206                /* Enable port 2 and 3 clocks*/
 207                setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 208                /* Enable port 2 and 3 usb host ports tll clocks*/
 209                setbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 210                /* Request FREF_XTAL_CLK clock for HSIC USB Hub */
 211                setbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 212        } else {
 213                clrbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 214                clrbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 215                clrbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 216        }
 217}
 218
 219int ehci_hcd_init(int index, enum usb_init_type init,
 220                struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 221{
 222        int ret;
 223
 224        /* VCC_3V3_ETH */
 225        cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_3V3, SMPS9_CTRL,
 226                                    SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO);
 227
 228        setup_host_clocks(true);
 229
 230        ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 231        if (ret < 0)
 232                printf("cm_t54: Failed to initialize ehci : %d\n", ret);
 233
 234        return ret;
 235}
 236
 237int ehci_hcd_stop(void)
 238{
 239        int ret = omap_ehci_hcd_stop();
 240
 241        setup_host_clocks(false);
 242
 243        cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_OFF,
 244                                    SMPS9_CTRL, SMPS_MODE_SLP_AUTO);
 245
 246        return ret;
 247}
 248
 249void usb_hub_reset_devices(int port)
 250{
 251        /* The LAN9730 needs to be reset after the port power has been set. */
 252        if (port == 3) {
 253                gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 0);
 254                udelay(10);
 255                gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 1);
 256        }
 257}
 258#endif
 259
 260