u-boot/arch/arm/mach-tegra/tegra20/pmu.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

64 lines
1.6 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2011 The Chromium OS Authors.
* (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.com>
*/
#include <common.h>
#include <i2c.h>
#include <tps6586x.h>
#include <asm/io.h>
#include <asm/arch/tegra.h>
#include <asm/arch-tegra/ap.h>
#include <asm/arch-tegra/tegra_i2c.h>
#include <asm/arch-tegra/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 */
#define PMI_I2C_ADDRESS 0x34 /* chip requires this address */
int pmu_set_nominal(void)
{
struct udevice *bus, *dev;
int core, cpu;
int ret;
/* by default, the table has been filled with T25 settings */
switch (tegra_get_chip_sku()) {
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 SKU id\n", __func__);
return -1;
}
ret = tegra_i2c_get_dvc_bus(&bus);
if (ret) {
debug("%s: Cannot find DVC I2C bus\n", __func__);
return ret;
}
ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find DVC I2C chip\n", __func__);
return ret;
}
tps6586x_init(dev);
tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
VDD_TRANSITION_RATE, VDD_RELATION);
}