2 * Copyright (c) 2011 The Chromium OS Authors.
3 * (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.com>
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
27 #include <asm/arch/tegra.h>
28 #include <asm/arch-tegra/ap.h>
29 #include <asm/arch-tegra/tegra_i2c.h>
30 #include <asm/arch-tegra/sys_proto.h>
32 #define VDD_CORE_NOMINAL_T25 0x17 /* 1.3v */
33 #define VDD_CPU_NOMINAL_T25 0x10 /* 1.125v */
35 #define VDD_CORE_NOMINAL_T20 0x16 /* 1.275v */
36 #define VDD_CPU_NOMINAL_T20 0x0f /* 1.1v */
38 #define VDD_RELATION 0x02 /* 50mv */
39 #define VDD_TRANSITION_STEP 0x06 /* 150mv */
40 #define VDD_TRANSITION_RATE 0x06 /* 3.52mv/us */
42 int pmu_set_nominal(void)
46 /* by default, the table has been filled with T25 settings */
47 switch (tegra_get_chip_type()) {
49 core = VDD_CORE_NOMINAL_T20;
50 cpu = VDD_CPU_NOMINAL_T20;
53 core = VDD_CORE_NOMINAL_T25;
54 cpu = VDD_CPU_NOMINAL_T25;
57 debug("%s: Unknown chip type\n", __func__);
61 bus = tegra_i2c_get_dvc_bus_num();
63 debug("%s: Cannot find DVC I2C bus\n", __func__);
67 tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
68 return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
69 VDD_TRANSITION_RATE, VDD_RELATION);