mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-18 16:08:53 +09:00
![Wolfgang Denk](/assets/img/avatar_default.png)
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
92 lines
2.2 KiB
C
92 lines
2.2 KiB
C
/*
|
|
* 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
|