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/*
* Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
*
* Parts are shamelessly stolen from various TI sources, original copyright
* follows:
* -----------------------------------------------------------------
*
* Copyright (C) 2004 Texas Instruments.
*
* ----------------------------------------------------------------------------
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
* ----------------------------------------------------------------------------
*/
#include <common.h>
#include <i2c.h>
#include <asm/arch/hardware.h>
#include <asm/arch/emac_defs.h>
#include "../common/psc.h"
#include "../common/misc.h"
DECLARE_GLOBAL_DATA_PTR;
int board_init(void)
{
/* arch number of the board */
gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_EVM;
/* address of boot parameters */
gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
/* Workaround for TMS320DM6446 errata 1.3.22 */
REG(PSC_SILVER_BULLET) = 0;
/* Power on required peripherals */
lpsc_on(DAVINCI_LPSC_EMAC);
lpsc_on(DAVINCI_LPSC_EMAC_WRAPPER);
lpsc_on(DAVINCI_LPSC_MDIO);
lpsc_on(DAVINCI_LPSC_I2C);
lpsc_on(DAVINCI_LPSC_UART0);
lpsc_on(DAVINCI_LPSC_TIMER1);
lpsc_on(DAVINCI_LPSC_GPIO);
#if !defined(CONFIG_SYS_USE_DSPLINK)
/* Powerup the DSP */
dsp_on();
#endif /* CONFIG_SYS_USE_DSPLINK */
/* Bringup UART0 out of reset */
REG(UART0_PWREMU_MGMT) = 0x0000e003;
/* Enable GIO3.3V cells used for EMAC */
REG(VDD3P3V_PWDN) = 0;
/* Enable UART0 MUX lines */
REG(PINMUX1) |= 1;
/* Enable EMAC and AEMIF pins */
REG(PINMUX0) = 0x80000c1f;
/* Enable I2C pin Mux */
REG(PINMUX1) |= (1 << 7);
/* Set the Bus Priority Register to appropriate value */
REG(VBPR) = 0x20;
timer_init();
return(0);
}
int misc_init_r(void)
{
uint8_t video_mode;
uint8_t eeprom_enetaddr[6];
dv_display_clk_infos();
/* Read Ethernet MAC address from EEPROM if available. */
if (dvevm_read_mac_address(eeprom_enetaddr))
dv_configure_mac_address(eeprom_enetaddr);
if (!eth_hw_init())
printf("ethernet init failed!\n");
i2c_read(0x39, 0x00, 1, &video_mode, 1);
setenv("videostd", ((video_mode & 0x80) ? "pal" : "ntsc"));
return(0);
}
#ifdef CONFIG_USB_DAVINCI
/* IO Expander I2C address and USB VBUS enable mask */
#define IOEXP_I2C_ADDR 0x3A
#define IOEXP_VBUSEN_MASK 1
/*
* This function enables USB VBUS by writting to IO expander using I2C.
* Note that the I2C is already initialized at this stage. This
* function is used by davinci specific USB wrapper code.
*/
void enable_vbus(void)
{
uchar data; /* IO Expander data to enable VBUS */
/* Write to IO expander to enable VBUS */
i2c_read(IOEXP_I2C_ADDR, 0, 0, &data, 1);
data &= ~IOEXP_VBUSEN_MASK;
i2c_write(IOEXP_I2C_ADDR, 0, 0, &data, 1);
}
#endif
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