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Sergey Kubushync74b2102007-08-10 20:26:18 +02001/*
2 * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
3 *
4 * Parts are shamelessly stolen from various TI sources, original copyright
5 * follows:
6 * -----------------------------------------------------------------
7 *
8 * Copyright (C) 2004 Texas Instruments.
9 *
10 * ----------------------------------------------------------------------------
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 * ----------------------------------------------------------------------------
25 */
26
27#include <common.h>
28#include <i2c.h>
29#include <asm/arch/hardware.h>
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040030#include "../common/misc.h"
Sergey Kubushync74b2102007-08-10 20:26:18 +020031
Dirk Behme66b3f242007-09-15 11:55:42 +020032DECLARE_GLOBAL_DATA_PTR;
33
Sergey Kubushync74b2102007-08-10 20:26:18 +020034int board_init(void)
35{
Sergey Kubushync74b2102007-08-10 20:26:18 +020036 /* arch number of the board */
37 gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_EVM;
38
39 /* address of boot parameters */
40 gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
41
Hugo Villeneuve0cd18fa2008-11-21 14:35:56 -050042 /* Configure AEMIF pins (although this should be configured at boot time
43 * with pull-up/pull-down resistors) */
44 REG(PINMUX0) = 0x00000c1f;
45
46 davinci_errata_workarounds();
Sergey Kubushync74b2102007-08-10 20:26:18 +020047
48 /* Power on required peripherals */
Sergey Kubushync74b2102007-08-10 20:26:18 +020049 lpsc_on(DAVINCI_LPSC_GPIO);
Thomas Abraham538ef962009-01-04 09:41:16 +053050 lpsc_on(DAVINCI_LPSC_USB);
Sergey Kubushync74b2102007-08-10 20:26:18 +020051
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020052#if !defined(CONFIG_SYS_USE_DSPLINK)
Sergey Kubushync74b2102007-08-10 20:26:18 +020053 /* Powerup the DSP */
54 dsp_on();
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020055#endif /* CONFIG_SYS_USE_DSPLINK */
Sergey Kubushync74b2102007-08-10 20:26:18 +020056
Hugo Villeneuve0cd18fa2008-11-21 14:35:56 -050057 davinci_enable_uart0();
58 davinci_enable_emac();
59 davinci_enable_i2c();
Sergey Kubushync74b2102007-08-10 20:26:18 +020060
Hugo Villeneuve0cd18fa2008-11-21 14:35:56 -050061 lpsc_on(DAVINCI_LPSC_TIMER1);
Sergey Kubushync74b2102007-08-10 20:26:18 +020062 timer_init();
63
64 return(0);
65}
66
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040067int misc_init_r(void)
Sergey Kubushync74b2102007-08-10 20:26:18 +020068{
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040069 uint8_t video_mode;
70 uint8_t eeprom_enetaddr[6];
Sergey Kubushync74b2102007-08-10 20:26:18 +020071
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040072 /* Read Ethernet MAC address from EEPROM if available. */
73 if (dvevm_read_mac_address(eeprom_enetaddr))
Ben Gardiner7b37a272010-09-23 09:58:43 -040074 davinci_sync_env_enetaddr(eeprom_enetaddr);
Sergey Kubushync74b2102007-08-10 20:26:18 +020075
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040076 i2c_read(0x39, 0x00, 1, &video_mode, 1);
Sergey Kubushync74b2102007-08-10 20:26:18 +020077
Hugo Villeneuve264bbdd2008-07-11 15:10:13 -040078 setenv("videostd", ((video_mode & 0x80) ? "pal" : "ntsc"));
Sergey Kubushync74b2102007-08-10 20:26:18 +020079
80 return(0);
81}
Thomas Abrahama9d39eb2009-01-04 09:41:09 +053082
83#ifdef CONFIG_USB_DAVINCI
84
85/* IO Expander I2C address and USB VBUS enable mask */
86#define IOEXP_I2C_ADDR 0x3A
87#define IOEXP_VBUSEN_MASK 1
88
89/*
90 * This function enables USB VBUS by writting to IO expander using I2C.
91 * Note that the I2C is already initialized at this stage. This
92 * function is used by davinci specific USB wrapper code.
93 */
94void enable_vbus(void)
95{
96 uchar data; /* IO Expander data to enable VBUS */
97
98 /* Write to IO expander to enable VBUS */
99 i2c_read(IOEXP_I2C_ADDR, 0, 0, &data, 1);
100 data &= ~IOEXP_VBUSEN_MASK;
101 i2c_write(IOEXP_I2C_ADDR, 0, 0, &data, 1);
102}
103#endif