board/compulab/cm_t3517/cm_t3517.c

   1 /*
   2  * (C) Copyright 2014 CompuLab, Ltd. <www.compulab.co.il>
   3  *
   4  * Authors: Igor Grinberg <grinberg@compulab.co.il>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <status_led.h>
  11 #include <net.h>
  12 #include <netdev.h>
  13 #include <usb.h>
  14 #include <mmc.h>
  15 #include <linux/compiler.h>
  16 #include <linux/usb/musb.h>
  17
  18 #include <asm/io.h>
  19 #include <asm/arch/mem.h>
  20 #include <asm/arch/am35x_def.h>
  21 #include <asm/arch/mmc_host_def.h>
  22 #include <asm/arch/sys_proto.h>
  23 #include <asm/arch/musb.h>
  24 #include <asm/omap_musb.h>
  25 #include <asm/ehci-omap.h>
  26
  27 #include "../common/common.h"
  28 #include "../common/eeprom.h"
  29
  30 DECLARE_GLOBAL_DATA_PTR;
  31
  32 const omap3_sysinfo sysinfo = {
  33         DDR_DISCRETE,
  34         "CM-T3517 board",
  35         "NAND 128/512M",
  36 };
  37
  38 #ifdef CONFIG_USB_MUSB_AM35X
  39 static struct musb_hdrc_config cm_t3517_musb_config = {
  40         .multipoint     = 1,
  41         .dyn_fifo       = 1,
  42         .num_eps        = 16,
  43         .ram_bits       = 12,
  44 };
  45
  46 static struct omap_musb_board_data cm_t3517_musb_board_data = {
  47         .set_phy_power          = am35x_musb_phy_power,
  48         .clear_irq              = am35x_musb_clear_irq,
  49         .reset                  = am35x_musb_reset,
  50 };
  51
  52 static struct musb_hdrc_platform_data cm_t3517_musb_pdata = {
  53 #if defined(CONFIG_USB_MUSB_HOST)
  54         .mode           = MUSB_HOST,
  55 #elif defined(CONFIG_USB_MUSB_GADGET)
  56         .mode           = MUSB_PERIPHERAL,
  57 #else
  58 #error "Please define either CONFIG_USB_MUSB_HOST or CONFIG_USB_MUSB_GADGET"
  59 #endif
  60         .config         = &cm_t3517_musb_config,
  61         .power          = 250,
  62         .platform_ops   = &am35x_ops,
  63         .board_data     = &cm_t3517_musb_board_data,
  64 };
  65
  66 static void cm_t3517_musb_init(void)
  67 {
  68         /*
  69          * Set up USB clock/mode in the DEVCONF2 register.
  70          * USB2.0 PHY reference clock is 13 MHz
  71          */
  72         clrsetbits_le32(&am35x_scm_general_regs->devconf2,
  73                         CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE,
  74                         CONF2_REFFREQ_13MHZ | CONF2_SESENDEN |
  75                         CONF2_VBDTCTEN | CONF2_DATPOL);
  76
  77         if (musb_register(&cm_t3517_musb_pdata, &cm_t3517_musb_board_data,
  78                           (void *)AM35XX_IPSS_USBOTGSS_BASE))
  79                 printf("Failed initializing AM35x MUSB!\n");
  80 }
  81 #else
  82 static inline void am3517_evm_musb_init(void) {}
  83 #endif
  84
  85 int board_init(void)
  86 {
  87         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  88
  89         /* boot param addr */
  90         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  91
  92 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  93         status_led_set(STATUS_LED_BOOT, STATUS_LED_ON);
  94 #endif
  95
  96         cm_t3517_musb_init();
  97
  98         return 0;
  99 }
 100
 101 /*
 102  * Routine: get_board_rev
 103  * Description: read system revision
 104  */
 105 u32 get_board_rev(void)
 106 {
 107         return cl_eeprom_get_board_rev(CONFIG_SYS_I2C_EEPROM_BUS);
 108 };
 109
 110 int misc_init_r(void)
 111 {
 112         cl_print_pcb_info();
 113         omap_die_id_display();
 114
 115         return 0;
 116 }
 117
 118 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 119 #define SB_T35_CD_GPIO 144
 120 #define SB_T35_WP_GPIO 59
 121
 122 int board_mmc_init(bd_t *bis)
 123 {
 124         return omap_mmc_init(0, 0, 0, SB_T35_CD_GPIO, SB_T35_WP_GPIO);
 125 }
 126 #endif
 127
 128 #ifdef CONFIG_DRIVER_TI_EMAC
 129 #define CONTROL_EFUSE_EMAC_LSB  0x48002380
 130 #define CONTROL_EFUSE_EMAC_MSB  0x48002384
 131
 132 static int am3517_get_efuse_enetaddr(u8 *enetaddr)
 133 {
 134         u32 lsb = __raw_readl(CONTROL_EFUSE_EMAC_LSB);
 135         u32 msb = __raw_readl(CONTROL_EFUSE_EMAC_MSB);
 136
 137         enetaddr[0] = (u8)((msb >> 16) & 0xff);
 138         enetaddr[1] = (u8)((msb >> 8)  & 0xff);
 139         enetaddr[2] = (u8)(msb & 0xff);
 140         enetaddr[3] = (u8)((lsb >> 16) & 0xff);
 141         enetaddr[4] = (u8)((lsb >> 8)  & 0xff);
 142         enetaddr[5] = (u8)(lsb & 0xff);
 143
 144         return is_valid_ethaddr(enetaddr);
 145 }
 146
 147 static inline int cm_t3517_init_emac(bd_t *bis)
 148 {
 149         int ret = cpu_eth_init(bis);
 150
 151         if (ret > 0)
 152                 return ret;
 153
 154         printf("Failed initializing EMAC! ");
 155         return 0;
 156 }
 157 #else /* !CONFIG_DRIVER_TI_EMAC */
 158 static inline int am3517_get_efuse_enetaddr(u8 *enetaddr) { return 1; }
 159 static inline int cm_t3517_init_emac(bd_t *bis) { return 0; }
 160 #endif /* CONFIG_DRIVER_TI_EMAC */
 161
 162 /*
 163  * Routine: handle_mac_address
 164  * Description: prepare MAC address for on-board Ethernet.
 165  */
 166 static int cm_t3517_handle_mac_address(void)
 167 {
 168         unsigned char enetaddr[6];
 169         int ret;
 170
 171         ret = eth_getenv_enetaddr("ethaddr", enetaddr);
 172         if (ret)
 173                 return 0;
 174
 175         ret = cl_eeprom_read_mac_addr(enetaddr, CONFIG_SYS_I2C_EEPROM_BUS);
 176         if (ret) {
 177                 ret = am3517_get_efuse_enetaddr(enetaddr);
 178                 if (ret)
 179                         return ret;
 180         }
 181
 182         if (!is_valid_ethaddr(enetaddr))
 183                 return -1;
 184
 185         return eth_setenv_enetaddr("ethaddr", enetaddr);
 186 }
 187
 188 #define SB_T35_ETH_RST_GPIO 164
 189
 190 /*
 191  * Routine: board_eth_init
 192  * Description: initialize module and base-board Ethernet chips
 193  */
 194 int board_eth_init(bd_t *bis)
 195 {
 196         int rc = 0, rc1 = 0;
 197
 198         rc1 = cm_t3517_handle_mac_address();
 199         if (rc1)
 200                 printf("No MAC address found! ");
 201
 202         rc1 = cm_t3517_init_emac(bis);
 203         if (rc1 > 0)
 204                 rc++;
 205
 206         rc1 = cl_omap3_smc911x_init(0, 4, CONFIG_SMC911X_BASE,
 207                                     NULL, SB_T35_ETH_RST_GPIO);
 208         if (rc1 > 0)
 209                 rc++;
 210
 211         return rc;
 212 }
 213
 214 #ifdef CONFIG_USB_EHCI_OMAP
 215 static struct omap_usbhs_board_data cm_t3517_usbhs_bdata = {
 216         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 217         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 218         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 219 };
 220
 221 #define CM_T3517_USB_HUB_RESET_GPIO     152
 222 #define SB_T35_USB_HUB_RESET_GPIO       98
 223
 224 int ehci_hcd_init(int index, enum usb_init_type init,
 225                         struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 226 {
 227         cl_usb_hub_init(CM_T3517_USB_HUB_RESET_GPIO, "cm-t3517 hub rst");
 228         cl_usb_hub_init(SB_T35_USB_HUB_RESET_GPIO, "sb-t35 hub rst");
 229
 230         return omap_ehci_hcd_init(index, &cm_t3517_usbhs_bdata, hccr, hcor);
 231 }
 232
 233 int ehci_hcd_stop(void)
 234 {
 235         cl_usb_hub_deinit(CM_T3517_USB_HUB_RESET_GPIO);
 236         cl_usb_hub_deinit(SB_T35_USB_HUB_RESET_GPIO);
 237
 238         return omap_ehci_hcd_stop();
 239 }
 240 #endif /* CONFIG_USB_EHCI_OMAP */