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