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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.
*
* ----------------------------------------------------------------------------
* SPDX-License-Identifier: GPL-2.0+
* ----------------------------------------------------------------------------
*/
#include <common.h>
#include <i2c.h>
#include <asm/arch/hardware.h>
#include <asm/arch/davinci_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;
/* Configure AEMIF pins (although this should be configured at boot time
* with pull-up/pull-down resistors) */
REG(PINMUX0) = 0x00000c1f;
davinci_errata_workarounds();
/* Power on required peripherals */
lpsc_on(DAVINCI_LPSC_GPIO);
lpsc_on(DAVINCI_LPSC_USB);
#if !defined(CONFIG_SYS_USE_DSPLINK)
/* Powerup the DSP */
dsp_on();
#endif /* CONFIG_SYS_USE_DSPLINK */
davinci_enable_uart0();
davinci_enable_emac();
davinci_enable_i2c();
lpsc_on(DAVINCI_LPSC_TIMER1);
timer_init();
return(0);
}
int misc_init_r(void)
{
uint8_t video_mode;
uint8_t eeprom_enetaddr[6];
/* Read Ethernet MAC address from EEPROM if available. */
if (dvevm_read_mac_address(eeprom_enetaddr))
davinci_sync_env_enetaddr(eeprom_enetaddr);
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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