board/compulab/cm_t54/cm_t54.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Board functions for Compulab CM-T54 board
   4  *
   5  * Copyright (C) 2014, Compulab Ltd - http://compulab.co.il/
   6  *
   7  * Author: Dmitry Lifshitz <lifshitz@compulab.co.il>
   8  */
   9
  10 #include <common.h>
  11 #include <env.h>
  12 #include <fdt_support.h>
  13 #include <net.h>
  14 #include <usb.h>
  15 #include <mmc.h>
  16 #include <palmas.h>
  17 #include <spl.h>
  18 #include <linux/delay.h>
  19
  20 #include <asm/gpio.h>
  21 #include <asm/arch/sys_proto.h>
  22 #include <asm/arch/mmc_host_def.h>
  23 #include <asm/arch/clock.h>
  24 #include <asm/arch/ehci.h>
  25 #include <asm/ehci-omap.h>
  26
  27 #include "../common/eeprom.h"
  28
  29 #define DIE_ID_REG_BASE         (OMAP54XX_L4_CORE_BASE + 0x2000)
  30 #define DIE_ID_REG_OFFSET       0x200
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33
  34 #if !defined(CONFIG_SPL_BUILD)
  35 inline void set_muxconf_regs(void){};
  36 #endif
  37
  38 const struct omap_sysinfo sysinfo = {
  39         "Board: CM-T54\n"
  40 };
  41
  42 /*
  43  * Routine: board_init
  44  * Description: hardware init.
  45  */
  46 int board_init(void)
  47 {
  48         gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
  49
  50         return 0;
  51 }
  52
  53 /*
  54  * Routine: cm_t54_palmas_regulator_set
  55  * Description:  select voltage and turn on/off Palmas PMIC regulator.
  56  */
  57 static int cm_t54_palmas_regulator_set(u8 vreg, u8 vval, u8 creg, u8 cval)
  58 {
  59         int err;
  60
  61         /* Setup voltage */
  62         err = palmas_i2c_write_u8(TWL603X_CHIP_P1, vreg, vval);
  63         if (err) {
  64                 printf("cm_t54: could not set regulator 0x%02x voltage : %d\n",
  65                        vreg, err);
  66                 return err;
  67         }
  68
  69         /* Turn on/off regulator */
  70         err = palmas_i2c_write_u8(TWL603X_CHIP_P1, creg, cval);
  71         if (err) {
  72                 printf("cm_t54: could not turn on/off regulator 0x%02x : %d\n",
  73                        creg, err);
  74                 return err;
  75         }
  76
  77         return 0;
  78 }
  79
  80 /*
  81  * Routine: mmc_get_env_part
  82  * Description:  setup environment storage device partition.
  83  */
  84 #ifdef CONFIG_SYS_MMC_ENV_PART
  85 uint mmc_get_env_part(struct mmc *mmc)
  86 {
  87         u32 bootmode = gd->arch.omap_boot_mode;
  88         uint bootpart = CONFIG_SYS_MMC_ENV_PART;
  89
  90         /*
  91          * If booted from eMMC boot partition then force eMMC
  92          * FIRST boot partition to be env storage
  93          */
  94         if (bootmode == BOOT_DEVICE_MMC2)
  95                 bootpart = 1;
  96
  97         return bootpart;
  98 }
  99 #endif
 100
 101 #if defined(CONFIG_MMC)
 102 #define SB_T54_CD_GPIO 228
 103 #define SB_T54_WP_GPIO 229
 104
 105 int board_mmc_init(bd_t *bis)
 106 {
 107         int ret0, ret1;
 108
 109         ret0 = omap_mmc_init(0, 0, 0, SB_T54_CD_GPIO, SB_T54_WP_GPIO);
 110         if (ret0)
 111                 printf("cm_t54: failed to initialize mmc0\n");
 112
 113         ret1 = omap_mmc_init(1, 0, 0, -1, -1);
 114         if (ret1)
 115                 printf("cm_t54: failed to initialize mmc1\n");
 116
 117         if (ret0 && ret1)
 118                 return -1;
 119
 120         return 0;
 121 }
 122 #endif
 123
 124 #ifdef CONFIG_USB_HOST_ETHER
 125
 126 int ft_board_setup(void *blob, bd_t *bd)
 127 {
 128         uint8_t enetaddr[6];
 129
 130         /* MAC addr */
 131         if (eth_env_get_enetaddr("usbethaddr", enetaddr)) {
 132                 fdt_find_and_setprop(blob, "/smsc95xx@0", "mac-address",
 133                                      enetaddr, 6, 1);
 134         }
 135
 136         return 0;
 137 }
 138
 139 static void generate_mac_addr(uint8_t *enetaddr)
 140 {
 141         int reg;
 142
 143         reg = DIE_ID_REG_BASE + DIE_ID_REG_OFFSET;
 144
 145         /*
 146          * create a fake MAC address from the processor ID code.
 147          * first byte is 0x02 to signify locally administered.
 148          */
 149         enetaddr[0] = 0x02;
 150         enetaddr[1] = readl(reg + 0x10) & 0xff;
 151         enetaddr[2] = readl(reg + 0xC) & 0xff;
 152         enetaddr[3] = readl(reg + 0x8) & 0xff;
 153         enetaddr[4] = readl(reg) & 0xff;
 154         enetaddr[5] = (readl(reg) >> 8) & 0xff;
 155 }
 156
 157 /*
 158  * Routine: handle_mac_address
 159  * Description: prepare MAC address for on-board Ethernet.
 160  */
 161 static int handle_mac_address(void)
 162 {
 163         uint8_t enetaddr[6];
 164         int ret;
 165
 166         ret = eth_env_get_enetaddr("usbethaddr", enetaddr);
 167         if (ret)
 168                 return 0;
 169
 170         ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
 171         if (ret || !is_valid_ethaddr(enetaddr))
 172                 generate_mac_addr(enetaddr);
 173
 174         if (!is_valid_ethaddr(enetaddr))
 175                 return -1;
 176
 177         return eth_env_set_enetaddr("usbethaddr", enetaddr);
 178 }
 179
 180 int board_eth_init(bd_t *bis)
 181 {
 182         return handle_mac_address();
 183 }
 184 #endif
 185
 186 #ifdef CONFIG_USB_EHCI_HCD
 187 static struct omap_usbhs_board_data usbhs_bdata = {
 188         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 189         .port_mode[1] = OMAP_EHCI_PORT_MODE_HSIC,
 190         .port_mode[2] = OMAP_EHCI_PORT_MODE_HSIC,
 191 };
 192
 193 static void setup_host_clocks(bool enable)
 194 {
 195         int usbhost_clk = OPTFCLKEN_HSIC60M_P3_CLK |
 196                           OPTFCLKEN_HSIC480M_P3_CLK |
 197                           OPTFCLKEN_HSIC60M_P2_CLK |
 198                           OPTFCLKEN_HSIC480M_P2_CLK |
 199                           OPTFCLKEN_UTMI_P3_CLK |
 200                           OPTFCLKEN_UTMI_P2_CLK;
 201
 202         int usbtll_clk = OPTFCLKEN_USB_CH1_CLK_ENABLE |
 203                          OPTFCLKEN_USB_CH2_CLK_ENABLE;
 204
 205         int usbhub_clk = CKOBUFFER_CLK_ENABLE_MASK;
 206
 207         if (enable) {
 208                 /* Enable port 2 and 3 clocks*/
 209                 setbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 210                 /* Enable port 2 and 3 usb host ports tll clocks*/
 211                 setbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 212                 /* Request FREF_XTAL_CLK clock for HSIC USB Hub */
 213                 setbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 214         } else {
 215                 clrbits_le32((*ctrl)->control_ckobuffer, usbhub_clk);
 216                 clrbits_le32((*prcm)->cm_l3init_hsusbtll_clkctrl, usbtll_clk);
 217                 clrbits_le32((*prcm)->cm_l3init_hsusbhost_clkctrl, usbhost_clk);
 218         }
 219 }
 220
 221 int ehci_hcd_init(int index, enum usb_init_type init,
 222                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 223 {
 224         int ret;
 225
 226         /* VCC_3V3_ETH */
 227         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_3V3, SMPS9_CTRL,
 228                                     SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO);
 229
 230         setup_host_clocks(true);
 231
 232         ret = omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 233         if (ret < 0)
 234                 printf("cm_t54: Failed to initialize ehci : %d\n", ret);
 235
 236         return ret;
 237 }
 238
 239 int ehci_hcd_stop(void)
 240 {
 241         int ret = omap_ehci_hcd_stop();
 242
 243         setup_host_clocks(false);
 244
 245         cm_t54_palmas_regulator_set(SMPS9_VOLTAGE, SMPS_VOLT_OFF,
 246                                     SMPS9_CTRL, SMPS_MODE_SLP_AUTO);
 247
 248         return ret;
 249 }
 250
 251 void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
 252 {
 253         /* The LAN9730 needs to be reset after the port power has been set. */
 254         if (port == 3) {
 255                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 0);
 256                 udelay(10);
 257                 gpio_direction_output(CONFIG_OMAP_EHCI_PHY3_RESET_GPIO, 1);
 258         }
 259 }
 260 #endif
 261