board/compulab/cm_t54/cm_t54.c

   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
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 #if !defined(CONFIG_SPL_BUILD)
  33 inline void set_muxconf_regs_essential(void){};
  34 #endif
  35
  36 const struct omap_sysinfo sysinfo = {
  37         "Board: CM-T54\n"
  38 };
  39
  40 /*
  41  * Routine: board_init
  42  * Description: hardware init.
  43  */
  44 int 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  */
  55 static 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
  83 uint mmc_get_env_part(struct mmc *mmc)
  84 {
  85         u32 bootmode = gd->arch.omap_boot_params.omap_bootmode;
  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
 103 int board_mmc_getcd(struct mmc *mmc)
 104 {
 105         return !gpio_get_value(SB_T54_CD_GPIO);
 106 }
 107
 108 int board_mmc_init(bd_t *bis)
 109 {
 110         int ret0, ret1;
 111
 112         ret0 = omap_mmc_init(0, 0, 0, -1, SB_T54_WP_GPIO);
 113         if (ret0)
 114                 printf("cm_t54: failed to initialize mmc0\n");
 115
 116         ret1 = omap_mmc_init(1, 0, 0, -1, -1);
 117         if (ret1)
 118                 printf("cm_t54: failed to initialize mmc1\n");
 119
 120         if (ret0 && ret1)
 121                 return -1;
 122
 123         return 0;
 124 }
 125 #endif
 126
 127 #ifdef CONFIG_USB_HOST_ETHER
 128
 129 void ft_board_setup(void *blob, bd_t *bd)
 130 {
 131         uint8_t enetaddr[6];
 132
 133         /* MAC addr */
 134         if (eth_getenv_enetaddr("usbethaddr", enetaddr)) {
 135                 fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
 136                                      enetaddr, 6, 1);
 137         }
 138 }
 139
 140 static void generate_mac_addr(uint8_t *enetaddr)
 141 {
 142         int reg;
 143
 144         reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
 145
 146         /*
 147          * create a fake MAC address from the processor ID code.
 148          * first byte is 0x02 to signify locally administered.
 149          */
 150         enetaddr[0] = 0x02;
 151         enetaddr[1] = readl(reg + 0x10) & 0xff;
 152         enetaddr[2] = readl(reg + 0xC) & 0xff;
 153         enetaddr[3] = readl(reg + 0x8) & 0xff;
 154         enetaddr[4] = readl(reg) & 0xff;
 155         enetaddr[5] = (readl(reg) >> 8) & 0xff;
 156 }
 157
 158 /*
 159  * Routine: handle_mac_address
 160  * Description: prepare MAC address for on-board Ethernet.
 161  */
 162 static int handle_mac_address(void)
 163 {
 164         uint8_t enetaddr[6];
 165         int ret;
 166
 167         ret = eth_getenv_enetaddr("usbethaddr", enetaddr);
 168         if (ret)
 169                 return 0;
 170
 171         ret = cl_eeprom_read_mac_addr(enetaddr);
 172         if (ret || !is_valid_ether_addr(enetaddr))
 173                 generate_mac_addr(enetaddr);
 174
 175         if (!is_valid_ether_addr(enetaddr))
 176                 return -1;
 177
 178         return eth_setenv_enetaddr("usbethaddr", enetaddr);
 179 }
 180
 181 int board_eth_init(bd_t *bis)
 182 {
 183         return handle_mac_address();
 184 }
 185 #endif
 186
 187 #ifdef CONFIG_USB_EHCI
 188 static struct omap_usbhs_board_data usbhs_bdata = {
 189         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 190         .port_mode[1] = OMAP_EHCI_PORT_MODE_HSIC,
 191         .port_mode[2] = OMAP_EHCI_PORT_MODE_HSIC,
 192 };
 193
 194 static void setup_host_clocks(bool enable)
 195 {
 196         int usbhost_clk = OPTFCLKEN_HSIC60M_P3_CLK |
 197                           OPTFCLKEN_HSIC480M_P3_CLK |
 198                           OPTFCLKEN_HSIC60M_P2_CLK |
 199                           OPTFCLKEN_HSIC480M_P2_CLK |
 200                           OPTFCLKEN_UTMI_P3_CLK |
 201                           OPTFCLKEN_UTMI_P2_CLK;
 202
 203         int usbtll_clk = OPTFCLKEN_USB_CH1_CLK_ENABLE |
 204                          OPTFCLKEN_USB_CH2_CLK_ENABLE;
 205
 206         int usbhub_clk = CKOBUFFER_CLK_ENABLE_MASK;
 207
 208         if (enable) {
 209                 /* Enable port 2 and 3 clocks*/
 210                 setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 211                 /* Enable port 2 and 3 usb host ports tll clocks*/
 212                 setbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 213                 /* Request FREF_XTAL_CLK clock for HSIC USB Hub */
 214                 setbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 215         } else {
 216                 clrbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 217                 clrbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 218                 clrbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 219         }
 220 }
 221
 222 int ehci_hcd_init(int index, enum usb_init_type init,
 223                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 224 {
 225         int ret;
 226
 227         /* VCC_3V3_ETH */
 228         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_3V3, SMPS9_CTRL,
 229                                     SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO);
 230
 231         setup_host_clocks(true);
 232
 233         ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 234         if (ret < 0)
 235                 printf("cm_t54: Failed to initialize ehci : %d\n", ret);
 236
 237         return ret;
 238 }
 239
 240 int ehci_hcd_stop(void)
 241 {
 242         int ret = omap_ehci_hcd_stop();
 243
 244         setup_host_clocks(false);
 245
 246         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_OFF,
 247                                     SMPS9_CTRL, SMPS_MODE_SLP_AUTO);
 248
 249         return ret;
 250 }
 251
 252 void usb_hub_reset_devices(int port)
 253 {
 254         /* The LAN9730 needs to be reset after the port power has been set. */
 255         if (port == 3) {
 256                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 0);
 257                 udelay(10);
 258                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 1);
 259         }
 260 }
 261 #endif
 262