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 262 263