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_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 229 102 103 int 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 123 124 int 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 } 136 137 static 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 */ 159 static 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 } 177 178 int board_eth_init(bd_t *bis) 179 { 180 return handle_mac_address(); 181 } 182 #endif 183 184 #ifdef CONFIG_USB_EHCI 185 static 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 }; 190 191 static 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 } 218 219 int 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 } 236 237 int 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 } 248 249 void 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