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Diffstat (limited to 'u-boot/board/zipitz2/zipitz2.c')
-rw-r--r-- | u-boot/board/zipitz2/zipitz2.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/u-boot/board/zipitz2/zipitz2.c b/u-boot/board/zipitz2/zipitz2.c new file mode 100644 index 0000000..9e6a0d5 --- /dev/null +++ b/u-boot/board/zipitz2/zipitz2.c @@ -0,0 +1,214 @@ +/* + * Copyright (C) 2009 + * Marek Vasut <marek.vasut@gmail.com> + * + * Heavily based on pxa255_idp platform + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <serial.h> +#include <asm/arch/hardware.h> +#include <spi.h> +#include <asm/io.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_CMD_SPI +void lcd_start(void); +#else +inline void lcd_start(void) {}; +#endif + +/* + * Miscelaneous platform dependent initialisations + */ + +int board_init (void) +{ + /* We have RAM, disable cache */ + dcache_disable(); + icache_disable(); + + /* arch number of Z2 */ + gd->bd->bi_arch_number = MACH_TYPE_ZIPIT2; + + /* adress of boot parameters */ + gd->bd->bi_boot_params = 0xa0000100; + + /* Enable LCD */ + lcd_start(); + + return 0; +} + +struct serial_device *default_serial_console (void) +{ + return &serial_stuart_device; +} + +extern void pxa_dram_init(void); +int dram_init(void) +{ + pxa_dram_init(); + gd->ram_size = PHYS_SDRAM_1_SIZE; + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; +} + +#ifdef CONFIG_CMD_SPI + +struct { + unsigned char reg; + unsigned short data; + unsigned char mdelay; +} lcd_data[] = { + { 0x07, 0x0000, 0 }, + { 0x13, 0x0000, 10 }, + { 0x11, 0x3004, 0 }, + { 0x14, 0x200F, 0 }, + { 0x10, 0x1a20, 0 }, + { 0x13, 0x0040, 50 }, + { 0x13, 0x0060, 0 }, + { 0x13, 0x0070, 200 }, + { 0x01, 0x0127, 0 }, + { 0x02, 0x0700, 0 }, + { 0x03, 0x1030, 0 }, + { 0x08, 0x0208, 0 }, + { 0x0B, 0x0620, 0 }, + { 0x0C, 0x0110, 0 }, + { 0x30, 0x0120, 0 }, + { 0x31, 0x0127, 0 }, + { 0x32, 0x0000, 0 }, + { 0x33, 0x0503, 0 }, + { 0x34, 0x0727, 0 }, + { 0x35, 0x0124, 0 }, + { 0x36, 0x0706, 0 }, + { 0x37, 0x0701, 0 }, + { 0x38, 0x0F00, 0 }, + { 0x39, 0x0F00, 0 }, + { 0x40, 0x0000, 0 }, + { 0x41, 0x0000, 0 }, + { 0x42, 0x013f, 0 }, + { 0x43, 0x0000, 0 }, + { 0x44, 0x013f, 0 }, + { 0x45, 0x0000, 0 }, + { 0x46, 0xef00, 0 }, + { 0x47, 0x013f, 0 }, + { 0x48, 0x0000, 0 }, + { 0x07, 0x0015, 30 }, + { 0x07, 0x0017, 0 }, + { 0x20, 0x0000, 0 }, + { 0x21, 0x0000, 0 }, + { 0x22, 0x0000, 0 }, +}; + +void zipitz2_spi_sda(int set) +{ + /* GPIO 13 */ + if (set) + writel((1 << 13), GPSR0); + else + writel((1 << 13), GPCR0); +} + +void zipitz2_spi_scl(int set) +{ + /* GPIO 22 */ + if (set) + writel((1 << 22), GPCR0); + else + writel((1 << 22), GPSR0); +} + +unsigned char zipitz2_spi_read(void) +{ + /* GPIO 40 */ + return !!(readl(GPLR1) & (1 << 8)); +} + +int spi_cs_is_valid(unsigned int bus, unsigned int cs) +{ + /* Always valid */ + return 1; +} + +void spi_cs_activate(struct spi_slave *slave) +{ + /* GPIO 88 low */ + writel((1 << 24), GPCR2); +} + +void spi_cs_deactivate(struct spi_slave *slave) +{ + /* GPIO 88 high */ + writel((1 << 24), GPSR2); + +} + +void lcd_start(void) +{ + int i; + unsigned char reg[3] = { 0x74, 0x00, 0 }; + unsigned char data[3] = { 0x76, 0, 0 }; + unsigned char dummy[3] = { 0, 0, 0 }; + + /* PWM2 AF */ + writel(readl(GAFR0_L) | 0x00800000, GAFR0_L); + /* Enable clock to all PWM */ + writel(readl(CKEN) | 0x3, CKEN); + /* Configure PWM2 */ + writel(0x4f, PWM_CTRL2); + writel(0x2ff, PWM_PWDUTY2); + writel(792, PWM_PERVAL2); + + /* Toggle the reset pin to reset the LCD */ + writel((1 << 19), GPSR0); + udelay(100000); + writel((1 << 19), GPCR0); + udelay(20000); + writel((1 << 19), GPSR0); + udelay(20000); + + /* Program the LCD init sequence */ + for (i = 0; i < sizeof(lcd_data) / sizeof(lcd_data[0]); i++) { + reg[0] = 0x74; + reg[1] = 0x0; + reg[2] = lcd_data[i].reg; + spi_xfer(NULL, 24, reg, dummy, SPI_XFER_BEGIN | SPI_XFER_END); + + data[0] = 0x76; + data[1] = lcd_data[i].data >> 8; + data[2] = lcd_data[i].data & 0xff; + spi_xfer(NULL, 24, data, dummy, SPI_XFER_BEGIN | SPI_XFER_END); + + if (lcd_data[i].mdelay) + udelay(lcd_data[i].mdelay * 1000); + } + + writel((1 << 11), GPSR0); +} +#endif |