Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / arm / cpu / tegra20-common / pmu.c

diff --git a/qemu/roms/u-boot/arch/arm/cpu/tegra20-common/pmu.c b/qemu/roms/u-boot/arch/arm/cpu/tegra20-common/pmu.c
new file mode 100644 (file)
index 0000000..c595f70
--- /dev/null
+++ b/qemu/roms/u-boot/arch/arm/cpu/tegra20-common/pmu.c
@@ -0,0 +1,54 @@
+/*
+ * 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 <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 */
+
+int pmu_set_nominal(void)
+{
+       int core, cpu, bus;
+
+       /* 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;
+       }
+
+       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);
+}