mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
||
|
|
* (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.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 <tps6586x.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <asm/arch/ap20.h>
|
||
|
|
#include <asm/arch/tegra2.h>
|
||
|
|
#include <asm/arch/tegra_i2c.h>
|
||
|
|
#include <asm/arch/sys_proto.h>
|
||
|
|
|
||
|
|
#define VDD_CORE_NOMINAL_T25 0x17 /* 1.3v */
|
||
|
|
#define VDD_CPU_NOMINAL_T25 0x10 /* 1.125v */
|
||
|
|
|
||
|
|
#define VDD_CORE_NOMINAL_T20 0x16 /* 1.275v */
|
||
|
|
#define VDD_CPU_NOMINAL_T20 0x0f /* 1.1v */
|
||
|
|
|
||
|
|
#define VDD_RELATION 0x02 /* 50mv */
|
||
|
|
#define VDD_TRANSITION_STEP 0x06 /* 150mv */
|
||
|
|
#define VDD_TRANSITION_RATE 0x06 /* 3.52mv/us */
|
||
|
|
|
||
|
|
int pmu_set_nominal(void)
|
||
|
|
{
|
||
|
|
int core, cpu, bus;
|
||
|
|
|
||
|
|
/* by default, the table has been filled with T25 settings */
|
||
|
|
switch (tegra_get_chip_type()) {
|
||
|
|
case TEGRA_SOC_T20:
|
||
|
|
core = VDD_CORE_NOMINAL_T20;
|
||
|
|
cpu = VDD_CPU_NOMINAL_T20;
|
||
|
|
break;
|
||
|
|
case TEGRA_SOC_T25:
|
||
|
|
core = VDD_CORE_NOMINAL_T25;
|
||
|
|
cpu = VDD_CPU_NOMINAL_T25;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
debug("%s: Unknown chip type\n", __func__);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
bus = tegra_i2c_get_dvc_bus_num();
|
||
|
|
if (bus == -1) {
|
||
|
|
debug("%s: Cannot find DVC I2C bus\n", __func__);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
tps6586x_init(bus);
|
||
|
|
tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
|
||
|
|
return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
|
||
|
|
VDD_TRANSITION_RATE, VDD_RELATION);
|
||
|
|
}
|