/* * 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); } #define VMMC1_VSEL_30 0x02 void twl4030_power_mmc_init(void) { unsigned char byte; byte = DEV_GRP_P1; twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte, TWL4030_PM_RECEIVER_VMMC1_DEV_GRP); /* 3 Volts */ byte = VMMC1_VSEL_30; twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte, TWL4030_PM_RECEIVER_VMMC1_DEDICATED); }