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/*
* Copyright (c) 2009 Wind River Systems, Inc.
* Tom Rix <Tom.Rix at windriver.com>
*
* 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., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
* twl4030_power_reset_init is derived from code on omapzoom,
* git://git.omapzoom.com/repo/u-boot.git
*
* Copyright (C) 2007-2009 Texas Instruments, Inc.
*
* twl4030_power_init is from cpu/omap3/common.c, power_init_r
*
* (C) Copyright 2004-2008
* Texas Instruments, <www.ti.com>
*
* Author :
* Sunil Kumar <sunilsaini05 at gmail.com>
* Shashi Ranjan <shashiranjanmca05 at gmail.com>
*
* Derived from Beagle Board and 3430 SDP code by
* Richard Woodruff <r-woodruff2 at ti.com>
* Syed Mohammed Khasim <khasim at ti.com>
*
*/
#include <twl4030.h>
/*
* Power Reset
*/
void twl4030_power_reset_init(void)
{
u8 val = 0;
if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, &val,
TWL4030_PM_MASTER_P1_SW_EVENTS)) {
printf("Error:TWL4030: failed to read the power register\n");
printf("Could not initialize hardware reset\n");
} else {
val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, val,
TWL4030_PM_MASTER_P1_SW_EVENTS)) {
printf("Error:TWL4030: failed to write the power register\n");
printf("Could not initialize hardware reset\n");
}
}
}
/*
* Power Init
*/
#define DEV_GRP_P1 0x20
#define VAUX3_VSEL_28 0x03
#define DEV_GRP_ALL 0xE0
#define VPLL2_VSEL_18 0x05
#define VDAC_VSEL_18 0x03
void twl4030_power_init(void)
{
unsigned char byte;
/* set VAUX3 to 2.8V */
byte = DEV_GRP_P1;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VAUX3_DEV_GRP);
byte = VAUX3_VSEL_28;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VAUX3_DEDICATED);
/* set VPLL2 to 1.8V */
byte = DEV_GRP_ALL;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VPLL2_DEV_GRP);
byte = VPLL2_VSEL_18;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
/* set VDAC to 1.8V */
byte = DEV_GRP_P1;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VDAC_DEV_GRP);
byte = VDAC_VSEL_18;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VDAC_DEDICATED);
}
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