board/zipitz2/zipitz2.c

   1 /*
   2  * Copyright (C) 2009
   3  * Marek Vasut <marek.vasut@gmail.com>
   4  *
   5  * Heavily based on pxa255_idp platform
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <command.h>
  12 #include <serial.h>
  13 #include <asm/arch/hardware.h>
  14 #include <asm/arch/pxa.h>
  15 #include <asm/arch/regs-mmc.h>
  16 #include <spi.h>
  17 #include <asm/io.h>
  18 #include <usb.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 #ifdef  CONFIG_CMD_SPI
  23 void lcd_start(void);
  24 #else
  25 inline void lcd_start(void) {};
  26 #endif
  27
  28 /*
  29  * Miscelaneous platform dependent initialisations
  30  */
  31 int board_init(void)
  32 {
  33         /* arch number of Z2 */
  34         gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2;
  35
  36         /* adress of boot parameters */
  37         gd->bd->bi_boot_params = 0xa0000100;
  38
  39         /* Enable LCD */
  40         lcd_start();
  41
  42         return 0;
  43 }
  44
  45 int dram_init(void)
  46 {
  47         pxa2xx_dram_init();
  48         gd->ram_size = PHYS_SDRAM_1_SIZE;
  49         return 0;
  50 }
  51
  52 #ifdef  CONFIG_CMD_USB
  53 int board_usb_init(int index, enum usb_init_type init)
  54 {
  55         /* enable port 2 */
  56         writel(readl(UP2OCR) | UP2OCR_HXOE | UP2OCR_HXS |
  57                 UP2OCR_DMPDE | UP2OCR_DPPDE, UP2OCR);
  58
  59         return 0;
  60 }
  61
  62 int board_usb_cleanup(int index, enum usb_init_type init)
  63 {
  64         return 0;
  65 }
  66
  67 void usb_board_stop(void)
  68 {
  69 }
  70 #endif
  71
  72 int dram_init_banksize(void)
  73 {
  74         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  75         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  76
  77         return 0;
  78 }
  79
  80 #ifdef  CONFIG_CMD_MMC
  81 int board_mmc_init(bd_t *bis)
  82 {
  83         pxa_mmc_register(0);
  84         return 0;
  85 }
  86 #endif
  87
  88 #ifdef  CONFIG_CMD_SPI
  89
  90 struct {
  91         unsigned char   reg;
  92         unsigned short  data;
  93         unsigned char   mdelay;
  94 } lcd_data[] = {
  95         { 0x07, 0x0000, 0 },
  96         { 0x13, 0x0000, 10 },
  97         { 0x11, 0x3004, 0 },
  98         { 0x14, 0x200F, 0 },
  99         { 0x10, 0x1a20, 0 },
 100         { 0x13, 0x0040, 50 },
 101         { 0x13, 0x0060, 0 },
 102         { 0x13, 0x0070, 200 },
 103         { 0x01, 0x0127, 0 },
 104         { 0x02, 0x0700, 0 },
 105         { 0x03, 0x1030, 0 },
 106         { 0x08, 0x0208, 0 },
 107         { 0x0B, 0x0620, 0 },
 108         { 0x0C, 0x0110, 0 },
 109         { 0x30, 0x0120, 0 },
 110         { 0x31, 0x0127, 0 },
 111         { 0x32, 0x0000, 0 },
 112         { 0x33, 0x0503, 0 },
 113         { 0x34, 0x0727, 0 },
 114         { 0x35, 0x0124, 0 },
 115         { 0x36, 0x0706, 0 },
 116         { 0x37, 0x0701, 0 },
 117         { 0x38, 0x0F00, 0 },
 118         { 0x39, 0x0F00, 0 },
 119         { 0x40, 0x0000, 0 },
 120         { 0x41, 0x0000, 0 },
 121         { 0x42, 0x013f, 0 },
 122         { 0x43, 0x0000, 0 },
 123         { 0x44, 0x013f, 0 },
 124         { 0x45, 0x0000, 0 },
 125         { 0x46, 0xef00, 0 },
 126         { 0x47, 0x013f, 0 },
 127         { 0x48, 0x0000, 0 },
 128         { 0x07, 0x0015, 30 },
 129         { 0x07, 0x0017, 0 },
 130         { 0x20, 0x0000, 0 },
 131         { 0x21, 0x0000, 0 },
 132         { 0x22, 0x0000, 0 },
 133 };
 134
 135 void zipitz2_spi_sda(int set)
 136 {
 137         /* GPIO 13 */
 138         if (set)
 139                 writel((1 << 13), GPSR0);
 140         else
 141                 writel((1 << 13), GPCR0);
 142 }
 143
 144 void zipitz2_spi_scl(int set)
 145 {
 146         /* GPIO 22 */
 147         if (set)
 148                 writel((1 << 22), GPCR0);
 149         else
 150                 writel((1 << 22), GPSR0);
 151 }
 152
 153 unsigned char zipitz2_spi_read(void)
 154 {
 155         /* GPIO 40 */
 156         return !!(readl(GPLR1) & (1 << 8));
 157 }
 158
 159 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 160 {
 161         /* Always valid */
 162         return 1;
 163 }
 164
 165 void spi_cs_activate(struct spi_slave *slave)
 166 {
 167         /* GPIO 88 low */
 168         writel((1 << 24), GPCR2);
 169 }
 170
 171 void spi_cs_deactivate(struct spi_slave *slave)
 172 {
 173         /* GPIO 88 high */
 174         writel((1 << 24), GPSR2);
 175 }
 176
 177 void lcd_start(void)
 178 {
 179         int i;
 180         unsigned char reg[3] = { 0x74, 0x00, 0 };
 181         unsigned char data[3] = { 0x76, 0, 0 };
 182         unsigned char dummy[3] = { 0, 0, 0 };
 183
 184         /* PWM2 AF */
 185         writel(readl(GAFR0_L) | 0x00800000, GAFR0_L);
 186         /* Enable clock to all PWM */
 187         writel(readl(CKEN) | 0x3, CKEN);
 188         /* Configure PWM2 */
 189         writel(0x4f, PWM_CTRL2);
 190         writel(0x2ff, PWM_PWDUTY2);
 191         writel(792, PWM_PERVAL2);
 192
 193         /* Toggle the reset pin to reset the LCD */
 194         writel((1 << 19), GPSR0);
 195         udelay(100000);
 196         writel((1 << 19), GPCR0);
 197         udelay(20000);
 198         writel((1 << 19), GPSR0);
 199         udelay(20000);
 200
 201         /* Program the LCD init sequence */
 202         for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) {
 203                 reg[0] = 0x74;
 204                 reg[1] = 0x0;
 205                 reg[2] = lcd_data[i].reg;
 206                 spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
 207
 208                 data[0] = 0x76;
 209                 data[1] = lcd_data[i].data >> 8;
 210                 data[2] = lcd_data[i].data & 0xff;
 211                 spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
 212
 213                 if (lcd_data[i].mdelay)
 214                         udelay(lcd_data[i].mdelay * 1000);
 215         }
 216
 217         writel((1 << 11), GPSR0);
 218 }
 219 #endif