// SPDX-License-Identifier: GPL-2.0-only
|
/*
|
* Copyright (c) 2013-2014, NVIDIA CORPORATION. All rights reserved.
|
*/
|
|
#include <linux/bug.h>
|
#include <linux/device.h>
|
#include <linux/kernel.h>
|
|
#include <soc/tegra/fuse.h>
|
|
#include "fuse.h"
|
|
#define SOC_PROCESS_CORNERS 2
|
#define CPU_PROCESS_CORNERS 2
|
|
enum {
|
THRESHOLD_INDEX_0,
|
THRESHOLD_INDEX_1,
|
THRESHOLD_INDEX_COUNT,
|
};
|
|
static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
|
{1123, UINT_MAX},
|
{0, UINT_MAX},
|
};
|
|
static const u32 __initconst cpu_process_speedos[][CPU_PROCESS_CORNERS] = {
|
{1695, UINT_MAX},
|
{0, UINT_MAX},
|
};
|
|
static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info,
|
int *threshold)
|
{
|
u32 tmp;
|
u32 sku = sku_info->sku_id;
|
enum tegra_revision rev = sku_info->revision;
|
|
switch (sku) {
|
case 0x00:
|
case 0x10:
|
case 0x05:
|
case 0x06:
|
sku_info->cpu_speedo_id = 1;
|
sku_info->soc_speedo_id = 0;
|
*threshold = THRESHOLD_INDEX_0;
|
break;
|
|
case 0x03:
|
case 0x04:
|
sku_info->cpu_speedo_id = 2;
|
sku_info->soc_speedo_id = 1;
|
*threshold = THRESHOLD_INDEX_1;
|
break;
|
|
default:
|
pr_err("Tegra Unknown SKU %d\n", sku);
|
sku_info->cpu_speedo_id = 0;
|
sku_info->soc_speedo_id = 0;
|
*threshold = THRESHOLD_INDEX_0;
|
break;
|
}
|
|
if (rev == TEGRA_REVISION_A01) {
|
tmp = tegra_fuse_read_early(0x270) << 1;
|
tmp |= tegra_fuse_read_early(0x26c);
|
if (!tmp)
|
sku_info->cpu_speedo_id = 0;
|
}
|
}
|
|
void __init tegra114_init_speedo_data(struct tegra_sku_info *sku_info)
|
{
|
u32 cpu_speedo_val;
|
u32 soc_speedo_val;
|
int threshold;
|
int i;
|
|
BUILD_BUG_ON(ARRAY_SIZE(cpu_process_speedos) !=
|
THRESHOLD_INDEX_COUNT);
|
BUILD_BUG_ON(ARRAY_SIZE(soc_process_speedos) !=
|
THRESHOLD_INDEX_COUNT);
|
|
rev_sku_to_speedo_ids(sku_info, &threshold);
|
|
cpu_speedo_val = tegra_fuse_read_early(0x12c) + 1024;
|
soc_speedo_val = tegra_fuse_read_early(0x134);
|
|
for (i = 0; i < CPU_PROCESS_CORNERS; i++)
|
if (cpu_speedo_val < cpu_process_speedos[threshold][i])
|
break;
|
sku_info->cpu_process_id = i;
|
|
for (i = 0; i < SOC_PROCESS_CORNERS; i++)
|
if (soc_speedo_val < soc_process_speedos[threshold][i])
|
break;
|
sku_info->soc_process_id = i;
|
}
|
