board/atmel/sama5d2_xplained/sama5d2_xplained.c

   1 /*
   2  * Copyright (C) 2015 Atmel Corporation
   3  *                    Wenyou.Yang <wenyou.yang@atmel.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <atmel_hlcdc.h>
  10 #include <debug_uart.h>
  11 #include <dm.h>
  12 #include <i2c.h>
  13 #include <lcd.h>
  14 #include <version.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/at91_common.h>
  17 #include <asm/arch/atmel_pio4.h>
  18 #include <asm/arch/atmel_mpddrc.h>
  19 #include <asm/arch/atmel_sdhci.h>
  20 #include <asm/arch/clk.h>
  21 #include <asm/arch/gpio.h>
  22 #include <asm/arch/sama5d2.h>
  23
  24 DECLARE_GLOBAL_DATA_PTR;
  25
  26 static void board_usb_hw_init(void)
  27 {
  28         atmel_pio4_set_pio_output(AT91_PIO_PORTB, 10, 1);
  29 }
  30
  31 #ifdef CONFIG_LCD
  32 vidinfo_t panel_info = {
  33         .vl_col = 480,
  34         .vl_row = 272,
  35         .vl_clk = 9000000,
  36         .vl_bpix = LCD_BPP,
  37         .vl_tft = 1,
  38         .vl_hsync_len = 41,
  39         .vl_left_margin = 2,
  40         .vl_right_margin = 2,
  41         .vl_vsync_len = 11,
  42         .vl_upper_margin = 2,
  43         .vl_lower_margin = 2,
  44         .mmio = ATMEL_BASE_LCDC,
  45 };
  46
  47 /* No power up/down pin for the LCD pannel */
  48 void lcd_enable(void)   { /* Empty! */ }
  49 void lcd_disable(void)  { /* Empty! */ }
  50
  51 unsigned int has_lcdc(void)
  52 {
  53         return 1;
  54 }
  55
  56 static void board_lcd_hw_init(void)
  57 {
  58         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 28, 0); /* LCDPWM */
  59         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 29, 0); /* LCDDISP */
  60         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 30, 0); /* LCDVSYNC */
  61         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 31, 0); /* LCDHSYNC */
  62         atmel_pio4_set_a_periph(AT91_PIO_PORTD,  0, 0); /* LCDPCK */
  63         atmel_pio4_set_a_periph(AT91_PIO_PORTD,  1, 0); /* LCDDEN */
  64
  65         /* LCDDAT0 */
  66         /* LCDDAT1 */
  67         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 10, 0); /* LCDDAT2 */
  68         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 11, 0); /* LCDDAT3 */
  69         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 12, 0); /* LCDDAT4 */
  70         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 13, 0); /* LCDDAT5 */
  71         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 14, 0); /* LCDDAT6 */
  72         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 15, 0); /* LCDDAT7 */
  73
  74         /* LCDDAT8 */
  75         /* LCDDAT9 */
  76         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 16, 0); /* LCDDAT10 */
  77         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 17, 0); /* LCDDAT11 */
  78         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 18, 0); /* LCDDAT12 */
  79         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 19, 0); /* LCDDAT13 */
  80         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 20, 0); /* LCDDAT14 */
  81         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 21, 0); /* LCDDAT15 */
  82
  83         /* LCDD16 */
  84         /* LCDD17 */
  85         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 22, 0); /* LCDDAT18 */
  86         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 23, 0); /* LCDDAT19 */
  87         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 24, 0); /* LCDDAT20 */
  88         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 25, 0); /* LCDDAT21 */
  89         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 26, 0); /* LCDDAT22 */
  90         atmel_pio4_set_a_periph(AT91_PIO_PORTC, 27, 0); /* LCDDAT23 */
  91
  92         at91_periph_clk_enable(ATMEL_ID_LCDC);
  93 }
  94
  95 #ifdef CONFIG_LCD_INFO
  96 void lcd_show_board_info(void)
  97 {
  98         ulong dram_size;
  99         int i;
 100         char temp[32];
 101
 102         lcd_printf("%s\n", U_BOOT_VERSION);
 103         lcd_printf("2015 ATMEL Corp\n");
 104         lcd_printf("%s CPU at %s MHz\n", get_cpu_name(),
 105                    strmhz(temp, get_cpu_clk_rate()));
 106
 107         dram_size = 0;
 108         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
 109                 dram_size += gd->bd->bi_dram[i].size;
 110
 111         lcd_printf("%ld MB SDRAM\n", dram_size >> 20);
 112 }
 113 #endif /* CONFIG_LCD_INFO */
 114 #endif /* CONFIG_LCD */
 115
 116 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
 117 static void board_uart1_hw_init(void)
 118 {
 119         atmel_pio4_set_a_periph(AT91_PIO_PORTD, 2, 1);  /* URXD1 */
 120         atmel_pio4_set_a_periph(AT91_PIO_PORTD, 3, 0);  /* UTXD1 */
 121
 122         at91_periph_clk_enable(ATMEL_ID_UART1);
 123 }
 124
 125 void board_debug_uart_init(void)
 126 {
 127         board_uart1_hw_init();
 128 }
 129 #endif
 130
 131 #ifdef CONFIG_BOARD_EARLY_INIT_F
 132 int board_early_init_f(void)
 133 {
 134 #ifdef CONFIG_DEBUG_UART
 135         debug_uart_init();
 136 #endif
 137
 138         return 0;
 139 }
 140 #endif
 141
 142 int board_init(void)
 143 {
 144         /* address of boot parameters */
 145         gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 146
 147 #ifdef CONFIG_LCD
 148         board_lcd_hw_init();
 149 #endif
 150 #ifdef CONFIG_CMD_USB
 151         board_usb_hw_init();
 152 #endif
 153
 154         return 0;
 155 }
 156
 157 int dram_init(void)
 158 {
 159         gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
 160                                     CONFIG_SYS_SDRAM_SIZE);
 161         return 0;
 162 }
 163
 164 #ifdef CONFIG_CMD_I2C
 165 static int set_ethaddr_from_eeprom(void)
 166 {
 167         const int ETH_ADDR_LEN = 6;
 168         unsigned char ethaddr[ETH_ADDR_LEN];
 169         const char *ETHADDR_NAME = "ethaddr";
 170         struct udevice *bus, *dev;
 171
 172         if (env_get(ETHADDR_NAME))
 173                 return 0;
 174
 175         if (uclass_get_device_by_seq(UCLASS_I2C, 1, &bus)) {
 176                 printf("Cannot find I2C bus 1\n");
 177                 return -1;
 178         }
 179
 180         if (dm_i2c_probe(bus, AT24MAC_ADDR, 0, &dev)) {
 181                 printf("Failed to probe I2C chip\n");
 182                 return -1;
 183         }
 184
 185         if (dm_i2c_read(dev, AT24MAC_REG, ethaddr, ETH_ADDR_LEN)) {
 186                 printf("Failed to read ethernet address from EEPROM\n");
 187                 return -1;
 188         }
 189
 190         if (!is_valid_ethaddr(ethaddr)) {
 191                 printf("The ethernet address read from EEPROM is not valid!\n");
 192                 return -1;
 193         }
 194
 195         return eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
 196 }
 197 #else
 198 static int set_ethaddr_from_eeprom(void)
 199 {
 200         return 0;
 201 }
 202 #endif
 203
 204 #ifdef CONFIG_MISC_INIT_R
 205 int misc_init_r(void)
 206 {
 207         set_ethaddr_from_eeprom();
 208
 209         return 0;
 210 }
 211 #endif
 212
 213 /* SPL */
 214 #ifdef CONFIG_SPL_BUILD
 215 void spl_board_init(void)
 216 {
 217 }
 218
 219 static void ddrc_conf(struct atmel_mpddrc_config *ddrc)
 220 {
 221         ddrc->md = (ATMEL_MPDDRC_MD_DBW_32_BITS | ATMEL_MPDDRC_MD_DDR3_SDRAM);
 222
 223         ddrc->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
 224                     ATMEL_MPDDRC_CR_NR_ROW_14 |
 225                     ATMEL_MPDDRC_CR_CAS_DDR_CAS5 |
 226                     ATMEL_MPDDRC_CR_DIC_DS |
 227                     ATMEL_MPDDRC_CR_DIS_DLL |
 228                     ATMEL_MPDDRC_CR_NB_8BANKS |
 229                     ATMEL_MPDDRC_CR_DECOD_INTERLEAVED |
 230                     ATMEL_MPDDRC_CR_UNAL_SUPPORTED);
 231
 232         ddrc->rtr = 0x511;
 233
 234         ddrc->tpr0 = (6 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET |
 235                       3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET |
 236                       4 << ATMEL_MPDDRC_TPR0_TWR_OFFSET |
 237                       9 << ATMEL_MPDDRC_TPR0_TRC_OFFSET |
 238                       3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET |
 239                       4 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET |
 240                       4 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET |
 241                       4 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET);
 242
 243         ddrc->tpr1 = (27 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET |
 244                       29 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET |
 245                       0 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET |
 246                       3 << ATMEL_MPDDRC_TPR1_TXP_OFFSET);
 247
 248         ddrc->tpr2 = (0 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET |
 249                       0 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET |
 250                       0 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET |
 251                       4 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET |
 252                       7 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET);
 253 }
 254
 255 void mem_init(void)
 256 {
 257         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
 258         struct atmel_mpddr *mpddrc = (struct atmel_mpddr *)ATMEL_BASE_MPDDRC;
 259         struct atmel_mpddrc_config ddrc_config;
 260         u32 reg;
 261
 262         ddrc_conf(&ddrc_config);
 263
 264         at91_periph_clk_enable(ATMEL_ID_MPDDRC);
 265         writel(AT91_PMC_DDR, &pmc->scer);
 266
 267         reg = readl(&mpddrc->io_calibr);
 268         reg &= ~ATMEL_MPDDRC_IO_CALIBR_RDIV;
 269         reg |= ATMEL_MPDDRC_IO_CALIBR_DDR3_RZQ_55;
 270         reg &= ~ATMEL_MPDDRC_IO_CALIBR_TZQIO;
 271         reg |= ATMEL_MPDDRC_IO_CALIBR_TZQIO_(100);
 272         writel(reg, &mpddrc->io_calibr);
 273
 274         writel(ATMEL_MPDDRC_RD_DATA_PATH_SHIFT_TWO_CYCLE,
 275                &mpddrc->rd_data_path);
 276
 277         ddr3_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddrc_config);
 278
 279         writel(0x3, &mpddrc->cal_mr4);
 280         writel(64, &mpddrc->tim_cal);
 281 }
 282
 283 void at91_pmc_init(void)
 284 {
 285         struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
 286         u32 tmp;
 287
 288         tmp = AT91_PMC_PLLAR_29 |
 289               AT91_PMC_PLLXR_PLLCOUNT(0x3f) |
 290               AT91_PMC_PLLXR_MUL(82) |
 291               AT91_PMC_PLLXR_DIV(1);
 292         at91_plla_init(tmp);
 293
 294         writel(0x0 << 8, &pmc->pllicpr);
 295
 296         tmp = AT91_PMC_MCKR_H32MXDIV |
 297               AT91_PMC_MCKR_PLLADIV_2 |
 298               AT91_PMC_MCKR_MDIV_3 |
 299               AT91_PMC_MCKR_CSS_PLLA;
 300         at91_mck_init(tmp);
 301 }
 302 #endif