board/delta/delta.c

   1 /*
   2  * (C) Copyright 2002
   3  * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
   4  *
   5  * (C) Copyright 2002
   6  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   7  * Marius Groeger <mgroeger@sysgo.de>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <i2c.h>
  30 #include <da9030.h>
  31 #include <asm/arch/pxa-regs.h>
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 /* ------------------------------------------------------------------------- */
  36
  37 static void init_DA9030(void);
  38
  39 /*
  40  * Miscelaneous platform dependent initialisations
  41  */
  42
  43 int board_init (void)
  44 {
  45         /* memory and cpu-speed are setup before relocation */
  46         /* so we do _nothing_ here */
  47
  48         /* arch number of Lubbock-Board mk@tbd: fix this! */
  49         gd->bd->bi_arch_number = MACH_TYPE_LUBBOCK;
  50
  51         /* adress of boot parameters */
  52         gd->bd->bi_boot_params = 0xa0000100;
  53
  54         return 0;
  55 }
  56
  57 int board_late_init(void)
  58 {
  59         setenv("stdout", "serial");
  60         setenv("stderr", "serial");
  61         init_DA9030();
  62         return 0;
  63 }
  64
  65
  66 int dram_init (void)
  67 {
  68         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
  69         gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
  70         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
  71         gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
  72         gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
  73         gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
  74         gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
  75         gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
  76
  77         return 0;
  78 }
  79
  80 void i2c_init_board()
  81 {
  82         CKENB |= (CKENB_4_I2C);
  83
  84         /* setup I2C GPIO's */
  85         GPIO32 = 0x801;         /* SCL = Alt. Fkt. 1 */
  86         GPIO33 = 0x801;         /* SDA = Alt. Fkt. 1 */
  87 }
  88
  89 /* initialize the DA9030 Power Controller */
  90 static void init_DA9030()
  91 {
  92         uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
  93
  94         CKENB |= CKENB_7_GPIO;
  95         udelay(100);
  96
  97         /* Rising Edge on EXTON to reset DA9030 */
  98         GPIO17 = 0x8800;        /* configure GPIO17, no pullup, -down */
  99         GPDR0 |= (1<<17);       /* GPIO17 is output */
 100         GSDR0 = (1<<17);
 101         GPCR0 = (1<<17);        /* drive GPIO17 low */
 102         GPSR0 = (1<<17);        /* drive GPIO17 high */
 103
 104 #if CFG_DA9030_EXTON_DELAY
 105         udelay((unsigned long) CFG_DA9030_EXTON_DELAY); /* wait for DA9030 */
 106 #endif
 107         GPCR0 = (1<<17);        /* drive GPIO17 low */
 108
 109         /* reset the watchdog and go active (0xec) */
 110         val = (SYS_CONTROL_A_HWRES_ENABLE |
 111                (0x6<<4) |
 112                SYS_CONTROL_A_WDOG_ACTION |
 113                SYS_CONTROL_A_WATCHDOG);
 114         if(i2c_write(addr, SYS_CONTROL_A, 1, &val, 1)) {
 115                 printf("Error accessing DA9030 via i2c.\n");
 116                 return;
 117         }
 118
 119         i2c_reg_write(addr, REG_CONTROL_1_97, 0xfd); /* disable LDO1, enable LDO6 */
 120         i2c_reg_write(addr, LDO2_3, 0xd1);      /* LDO2 =1,9V, LDO3=3,1V */
 121         i2c_reg_write(addr, LDO4_5, 0xcc);      /* LDO2 =1,9V, LDO3=3,1V */
 122         i2c_reg_write(addr, LDO6_SIMCP, 0x3e);  /* LDO6=3,2V, SIMCP = 5V support */
 123         i2c_reg_write(addr, LDO7_8, 0xc9);      /* LDO7=2,7V, LDO8=3,0V */
 124         i2c_reg_write(addr, LDO9_12, 0xec);     /* LDO9=3,0V, LDO12=3,2V */
 125         i2c_reg_write(addr, BUCK, 0x0c);        /* Buck=1.2V */
 126         i2c_reg_write(addr, REG_CONTROL_2_98, 0x7f); /* All LDO'S on 8,9,10,11,12,14 */
 127         i2c_reg_write(addr, LDO_10_11, 0xcc);   /* LDO10=3.0V  LDO11=3.0V */
 128         i2c_reg_write(addr, LDO_15, 0xae);      /* LDO15=1.8V, dislock first 3bit */
 129         i2c_reg_write(addr, LDO_14_16, 0x05);   /* LDO14=2.8V, LDO16=NB */
 130         i2c_reg_write(addr, LDO_18_19, 0x9c);   /* LDO18=3.0V, LDO19=2.7V */
 131         i2c_reg_write(addr, LDO_17_SIMCP0, 0x2c); /* LDO17=3.0V, SIMCP=3V support */
 132         i2c_reg_write(addr, BUCK2_DVC1, 0x9a);  /* Buck2=1.5V plus Update support of 520 MHz */
 133         i2c_reg_write(addr, REG_CONTROL_2_18, 0x43); /* Ball on */
 134         i2c_reg_write(addr, MISC_CONTROLB, 0x08); /* session valid enable */
 135         i2c_reg_write(addr, USBPUMP, 0xc1);     /* start pump, ignore HW signals */
 136
 137         val = i2c_reg_read(addr, STATUS);
 138         if(val & STATUS_CHDET)
 139                 printf("Charger detected, turning on LED.\n");
 140         else {
 141                 printf("No charger detetected.\n");
 142                 /* undervoltage? print error and power down */
 143         }
 144 }
 145
 146
 147 #if 0
 148 /* reset the DA9030 watchdog */
 149 void hw_watchdog_reset(void)
 150 {
 151         uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
 152         val = i2c_reg_read(addr, SYS_CONTROL_A);
 153         val |= SYS_CONTROL_A_WATCHDOG;
 154         i2c_reg_write(addr, SYS_CONTROL_A, val);
 155 }
 156 #endif