LXR uboot/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
  20DECLARE_GLOBAL_DATA_PTR;
  21
  22#ifdef  CONFIG_CMD_SPI
  23void lcd_start(void);
  24#else
  25inline void lcd_start(void) {};
  26#endif
  27
  28/*
  29 * Miscelaneous platform dependent initialisations
  30 */
  31int 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
  45int 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
  53int 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
  62int board_usb_cleanup(int index, enum usb_init_type init)
  63{
  64        return 0;
  65}
  66
  67void usb_board_stop(void)
  68{
  69}
  70#endif
  71
  72void 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
  78#ifdef  CONFIG_CMD_MMC
  79int board_mmc_init(bd_t *bis)
  80{
  81        pxa_mmc_register(0);
  82        return 0;
  83}
  84#endif
  85
  86#ifdef  CONFIG_CMD_SPI
  87
  88struct {
  89        unsigned char   reg;
  90        unsigned short  data;
  91        unsigned char   mdelay;
  92} lcd_data[] = {
  93        { 0x07, 0x0000, 0 },
  94        { 0x13, 0x0000, 10 },
  95        { 0x11, 0x3004, 0 },
  96        { 0x14, 0x200F, 0 },
  97        { 0x10, 0x1a20, 0 },
  98        { 0x13, 0x0040, 50 },
  99        { 0x13, 0x0060, 0 },
 100        { 0x13, 0x0070, 200 },
 101        { 0x01, 0x0127, 0 },
 102        { 0x02, 0x0700, 0 },
 103        { 0x03, 0x1030, 0 },
 104        { 0x08, 0x0208, 0 },
 105        { 0x0B, 0x0620, 0 },
 106        { 0x0C, 0x0110, 0 },
 107        { 0x30, 0x0120, 0 },
 108        { 0x31, 0x0127, 0 },
 109        { 0x32, 0x0000, 0 },
 110        { 0x33, 0x0503, 0 },
 111        { 0x34, 0x0727, 0 },
 112        { 0x35, 0x0124, 0 },
 113        { 0x36, 0x0706, 0 },
 114        { 0x37, 0x0701, 0 },
 115        { 0x38, 0x0F00, 0 },
 116        { 0x39, 0x0F00, 0 },
 117        { 0x40, 0x0000, 0 },
 118        { 0x41, 0x0000, 0 },
 119        { 0x42, 0x013f, 0 },
 120        { 0x43, 0x0000, 0 },
 121        { 0x44, 0x013f, 0 },
 122        { 0x45, 0x0000, 0 },
 123        { 0x46, 0xef00, 0 },
 124        { 0x47, 0x013f, 0 },
 125        { 0x48, 0x0000, 0 },
 126        { 0x07, 0x0015, 30 },
 127        { 0x07, 0x0017, 0 },
 128        { 0x20, 0x0000, 0 },
 129        { 0x21, 0x0000, 0 },
 130        { 0x22, 0x0000, 0 },
 131};
 132
 133void zipitz2_spi_sda(int set)
 134{
 135        /* GPIO 13 */
 136        if (set)
 137                writel((1 << 13), GPSR0);
 138        else
 139                writel((1 << 13), GPCR0);
 140}
 141
 142void zipitz2_spi_scl(int set)
 143{
 144        /* GPIO 22 */
 145        if (set)
 146                writel((1 << 22), GPCR0);
 147        else
 148                writel((1 << 22), GPSR0);
 149}
 150
 151unsigned char zipitz2_spi_read(void)
 152{
 153        /* GPIO 40 */
 154        return !!(readl(GPLR1) & (1 << 8));
 155}
 156
 157int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 158{
 159        /* Always valid */
 160        return 1;
 161}
 162
 163void spi_cs_activate(struct spi_slave *slave)
 164{
 165        /* GPIO 88 low */
 166        writel((1 << 24), GPCR2);
 167}
 168
 169void spi_cs_deactivate(struct spi_slave *slave)
 170{
 171        /* GPIO 88 high */
 172        writel((1 << 24), GPSR2);
 173}
 174
 175void lcd_start(void)
 176{
 177        int i;
 178        unsigned char reg[3] = { 0x74, 0x00, 0 };
 179        unsigned char data[3] = { 0x76, 0, 0 };
 180        unsigned char dummy[3] = { 0, 0, 0 };
 181
 182        /* PWM2 AF */
 183        writel(readl(GAFR0_L) | 0x00800000, GAFR0_L);
 184        /* Enable clock to all PWM */
 185        writel(readl(CKEN) | 0x3, CKEN);
 186        /* Configure PWM2 */
 187        writel(0x4f, PWM_CTRL2);
 188        writel(0x2ff, PWM_PWDUTY2);
 189        writel(792, PWM_PERVAL2);
 190
 191        /* Toggle the reset pin to reset the LCD */
 192        writel((1 << 19), GPSR0);
 193        udelay(100000);
 194        writel((1 << 19), GPCR0);
 195        udelay(20000);
 196        writel((1 << 19), GPSR0);
 197        udelay(20000);
 198
 199        /* Program the LCD init sequence */
 200        for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) {
 201                reg[0] = 0x74;
 202                reg[1] = 0x0;
 203                reg[2] = lcd_data[i].reg;
 204                spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
 205
 206                data[0] = 0x76;
 207                data[1] = lcd_data[i].data >> 8;
 208                data[2] = lcd_data[i].data & 0xff;
 209                spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END);
 210
 211                if (lcd_data[i].mdelay)
 212                        udelay(lcd_data[i].mdelay * 1000);
 213        }
 214
 215        writel((1 << 11), GPSR0);
 216}
 217#endif
 218