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 void 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 79 int 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 88 struct { 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 }; 132 133 void 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 } 141 142 void 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 } 150 151 unsigned char zipitz2_spi_read(void) 152 { 153 /* GPIO 40 */ 154 return !!(readl(GPLR1) & (1 << 8)); 155 } 156 157 int spi_cs_is_valid(unsigned int bus, unsigned int cs) 158 { 159 /* Always valid */ 160 return 1; 161 } 162 163 void spi_cs_activate(struct spi_slave *slave) 164 { 165 /* GPIO 88 low */ 166 writel((1 << 24), GPCR2); 167 } 168 169 void spi_cs_deactivate(struct spi_slave *slave) 170 { 171 /* GPIO 88 high */ 172 writel((1 << 24), GPSR2); 173 } 174 175 void 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