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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-02-20 17:04:04 +0900 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2015-02-21 08:23:51 -0500 |
| commit | 09f455dca74973ef5e42311162c8dff7e83d44a2 (patch) | |
| tree | 3107041e5a3c55644d8323b121026b062884d079 /arch/arm/mach-tegra/tegra20/pmu.c | |
| parent | 620118403e1521b4c883848a84d2fb68e3fa1aa0 (diff) | |
| download | u-boot-imx-09f455dca74973ef5e42311162c8dff7e83d44a2.zip u-boot-imx-09f455dca74973ef5e42311162c8dff7e83d44a2.tar.gz u-boot-imx-09f455dca74973ef5e42311162c8dff7e83d44a2.tar.bz2 | |
ARM: tegra: collect SoC sources into mach-tegra
This commit moves files as follows:
arch/arm/cpu/arm720t/tegra20/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/arm720t/tegra30/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/arm720t/tegra114/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/arm720t/tegra124* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/arm720t/tegra-common/* -> arch/arm/mach-tegra/*
arch/arm/cpu/armv7/tegra20/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/armv7/tegra30/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/armv7/tegra114/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/armv7/tegra124/* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/armv7/tegra-common/* -> arch/arm/mach-tegra/*
arch/arm/cpu/tegra20-common/* -> arch/arm/mach-tegra/tegra20/*
arch/arm/cpu/tegra30-common/* -> arch/arm/mach-tegra/tegra30/*
arch/arm/cpu/tegra114-common/* -> arch/arm/mach-tegra/tegra114/*
arch/arm/cpu/tegra124-common/* -> arch/arm/mach-tegra/tegra124/*
arch/arm/cpu/tegra-common/* -> arch/arm/mach-tegra/*
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Tested-by: Simon Glass <sjg@chromium.org> [ on nyan-big ]
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra20/pmu.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra20/pmu.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra20/pmu.c b/arch/arm/mach-tegra/tegra20/pmu.c new file mode 100644 index 0000000..a774246 --- /dev/null +++ b/arch/arm/mach-tegra/tegra20/pmu.c @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. + * (C) Copyright 2010,2011 NVIDIA Corporation <www.nvidia.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#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); +} |