mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 00:48:52 +09:00
152 lines
4.6 KiB
C
152 lines
4.6 KiB
C
/*
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* (C) Copyright 2002
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* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <i2c.h>
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#include <da9030.h>
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#include <asm/arch/pxa-regs.h>
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/* ------------------------------------------------------------------------- */
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static void init_DA9030(void);
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/*
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* Miscelaneous platform dependent initialisations
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*/
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int board_init (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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/* memory and cpu-speed are setup before relocation */
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/* so we do _nothing_ here */
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/* arch number of Lubbock-Board mk@tbd: fix this! */
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gd->bd->bi_arch_number = MACH_TYPE_LUBBOCK;
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/* adress of boot parameters */
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gd->bd->bi_boot_params = 0xa0000100;
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return 0;
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}
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int board_late_init(void)
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{
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setenv("stdout", "serial");
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setenv("stderr", "serial");
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init_DA9030();
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return 0;
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}
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int dram_init (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
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gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
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gd->bd->bi_dram[2].start = PHYS_SDRAM_3;
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gd->bd->bi_dram[2].size = PHYS_SDRAM_3_SIZE;
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gd->bd->bi_dram[3].start = PHYS_SDRAM_4;
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gd->bd->bi_dram[3].size = PHYS_SDRAM_4_SIZE;
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return 0;
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}
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/* initialize the DA9030 Power Controller */
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static void init_DA9030()
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{
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uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
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/* setup I2C GPIO's */
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GPIO32 = 0x801; /* SCL = Alt. Fkt. 1 */
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GPIO33 = 0x801; /* SDA = Alt. Fkt. 1 */
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/* rising Edge on EXTON */
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GPIO17 = 0xc800; /* enable pullup */
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GPDR0 |= (1<<17); /* GPIO17 is output */
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GSDR0 = (1<<17);
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GPCR0 = (1<<17); /* drive GPIO17 low */
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udelay(5);
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GPSR0 = (1<<17); /* drive GPIO17 high */
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#if CFG_DA9030_EXTON_DELAY
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udelay((unsigned long) CFG_DA9030_EXTON_DELAY); /* wait for DA9030 */
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#endif
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GPCR0 = (1<<17); /* drive GPIO17 low */
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GPIO17 = 0x8800; /* disable pullup */
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/* reset the watchdog and go active (0xec) */
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val = (SYS_CONTROL_A_HWRES_ENABLE |
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(0x6<<4) |
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SYS_CONTROL_A_WDOG_ACTION |
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SYS_CONTROL_A_WATCHDOG);
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if(i2c_write(addr, SYS_CONTROL_A, 1, &val, 1)) {
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printf("Error accessing DA9030 via i2c.\n");
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return;
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}
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i2c_reg_write(addr, REG_CONTROL_1_97, 0xfd); /* disable LDO1, enable LDO6 */
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i2c_reg_write(addr, LDO2_3, 0xd1); /* LDO2 =1,9V, LDO3=3,1V */
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i2c_reg_write(addr, LDO4_5, 0xcc); /* LDO2 =1,9V, LDO3=3,1V */
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i2c_reg_write(addr, LDO6_SIMCP, 0x3e); /* LDO6=3,2V, SIMCP = 5V support */
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i2c_reg_write(addr, LDO7_8, 0xc9); /* LDO7=2,7V, LDO8=3,0V */
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i2c_reg_write(addr, LDO9_12, 0xec); /* LDO9=3,0V, LDO12=3,2V */
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i2c_reg_write(addr, BUCK, 0x0c); /* Buck=1.2V */
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i2c_reg_write(addr, REG_CONTROL_2_98, 0x7f); /* All LDO'S on 8,9,10,11,12,14 */
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i2c_reg_write(addr, LDO_10_11, 0xcc); /* LDO10=3.0V LDO11=3.0V */
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i2c_reg_write(addr, LDO_15, 0xae); /* LDO15=1.8V, dislock first 3bit */
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i2c_reg_write(addr, LDO_14_16, 0x05); /* LDO14=2.8V, LDO16=NB */
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i2c_reg_write(addr, LDO_18_19, 0x9c); /* LDO18=3.0V, LDO19=2.7V */
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i2c_reg_write(addr, LDO_17_SIMCP0, 0x2c); /* LDO17=3.0V, SIMCP=3V support */
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i2c_reg_write(addr, BUCK2_DVC1, 0x9a); /* Buck2=1.5V plus Update support of 520 MHz */
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i2c_reg_write(addr, REG_CONTROL_2_18, 0x43); /* Ball on */
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i2c_reg_write(addr, MISC_CONTROLB, 0x08); /* session valid enable */
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i2c_reg_write(addr, USBPUMP, 0xc1); /* start pump, ignore HW signals */
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val = i2c_reg_read(addr, STATUS);
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if(val & STATUS_CHDET)
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printf("Charger detected, turning on LED.\n");
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else {
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printf("No charger detetected.\n");
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/* undervoltage? print error and power down */
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}
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}
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#if 0
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/* reset the DA9030 watchdog */
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void hw_watchdog_reset(void)
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{
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uchar addr = (uchar) DA9030_I2C_ADDR, val = 0;
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val = i2c_reg_read(addr, SYS_CONTROL_A);
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val |= SYS_CONTROL_A_WATCHDOG;
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i2c_reg_write(addr, SYS_CONTROL_A, val);
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}
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#endif
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