diff options
Diffstat (limited to 'board/omap3/common/power.c')
| -rw-r--r-- | board/omap3/common/power.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/board/omap3/common/power.c b/board/omap3/common/power.c new file mode 100644 index 0000000..4908e5b --- /dev/null +++ b/board/omap3/common/power.c @@ -0,0 +1,74 @@ +/* + * (C) Copyright 2004-2008 + * Texas Instruments, <www.ti.com> + * + * Author : + * Sunil Kumar <sunilsaini05@gmail.com> + * Shashi Ranjan <shashiranjanmca05@gmail.com> + * + * Derived from Beagle Board and 3430 SDP code by + * Richard Woodruff <r-woodruff2@ti.com> + * Syed Mohammed Khasim <khasim@ti.com> + * + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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 + */ +#include <common.h> +#include <asm/arch/sys_proto.h> +#include <i2c.h> + +/****************************************************************************** + * Routine: power_init_r + * Description: Configure power supply + *****************************************************************************/ +void power_init_r(void) +{ + unsigned char byte; + +#ifdef CONFIG_DRIVER_OMAP34XX_I2C + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); +#endif + + /* + * Configure OMAP3 supply voltages in power management + * companion chip. + */ + + /* set VAUX3 to 2.8V */ + byte = DEV_GRP_P1; + i2c_write(PWRMGT_ADDR_ID4, VAUX3_DEV_GRP, 1, &byte, 1); + byte = VAUX3_VSEL_28; + i2c_write(PWRMGT_ADDR_ID4, VAUX3_DEDICATED, 1, &byte, 1); + + /* set VPLL2 to 1.8V */ + byte = DEV_GRP_ALL; + i2c_write(PWRMGT_ADDR_ID4, VPLL2_DEV_GRP, 1, &byte, 1); + byte = VPLL2_VSEL_18; + i2c_write(PWRMGT_ADDR_ID4, VPLL2_DEDICATED, 1, &byte, 1); + + /* set VDAC to 1.8V */ + byte = DEV_GRP_P1; + i2c_write(PWRMGT_ADDR_ID4, VDAC_DEV_GRP, 1, &byte, 1); + byte = VDAC_VSEL_18; + i2c_write(PWRMGT_ADDR_ID4, VDAC_DEDICATED, 1, &byte, 1); + + /* enable LED */ + byte = LEDBPWM | LEDAPWM | LEDBON | LEDAON; + i2c_write(PWRMGT_ADDR_ID3, LEDEN, 1, &byte, 1); +} |