xref: /openbmc/u-boot/drivers/power/palmas.c (revision 9e336903)
1 /*
2  * (C) Copyright 2012-2013
3  * Texas Instruments, <www.ti.com>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 #include <config.h>
24 #include <palmas.h>
25 
26 void palmas_init_settings(void)
27 {
28 	return;
29 }
30 
31 int palmas_mmc1_poweron_ldo(void)
32 {
33 	u8 val = 0;
34 
35 	/* set LDO9 TWL6035 to 3V */
36 	val = 0x2b; /* (3 -.9)*28 +1 */
37 
38 	if (palmas_i2c_write_u8(0x48, LDO9_VOLTAGE, val)) {
39 		printf("twl6035: could not set LDO9 voltage.\n");
40 		return 1;
41 	}
42 
43 	/* TURN ON LDO9 */
44 	val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE;
45 
46 	if (palmas_i2c_write_u8(0x48, LDO9_CTRL, val)) {
47 		printf("twl6035: could not turn on LDO9.\n");
48 		return 1;
49 	}
50 
51 	return 0;
52 }
53