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linux/drivers/soc/tegra/fuse/speedo-tegra30.c
Thomas Gleixner 9952f6918d treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms and conditions of the gnu general public license
  version 2 as published by the free software foundation this program
  is distributed in the hope 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 see http www gnu org
  licenses

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 228 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Steve Winslow <swinslow@gmail.com>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190528171438.107155473@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:29:52 -07:00

278 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2012-2014, 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 1
#define CPU_PROCESS_CORNERS 6
#define FUSE_SPEEDO_CALIB_0 0x14
#define FUSE_PACKAGE_INFO 0XFC
#define FUSE_TEST_PROG_VER 0X28
#define G_SPEEDO_BIT_MINUS1 58
#define G_SPEEDO_BIT_MINUS1_R 59
#define G_SPEEDO_BIT_MINUS2 60
#define G_SPEEDO_BIT_MINUS2_R 61
#define LP_SPEEDO_BIT_MINUS1 62
#define LP_SPEEDO_BIT_MINUS1_R 63
#define LP_SPEEDO_BIT_MINUS2 64
#define LP_SPEEDO_BIT_MINUS2_R 65
enum {
THRESHOLD_INDEX_0,
THRESHOLD_INDEX_1,
THRESHOLD_INDEX_2,
THRESHOLD_INDEX_3,
THRESHOLD_INDEX_4,
THRESHOLD_INDEX_5,
THRESHOLD_INDEX_6,
THRESHOLD_INDEX_7,
THRESHOLD_INDEX_8,
THRESHOLD_INDEX_9,
THRESHOLD_INDEX_10,
THRESHOLD_INDEX_11,
THRESHOLD_INDEX_COUNT,
};
static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = {
{180},
{170},
{195},
{180},
{168},
{192},
{180},
{170},
{195},
{180},
{180},
{180},
};
static const u32 __initconst cpu_process_speedos[][CPU_PROCESS_CORNERS] = {
{306, 338, 360, 376, UINT_MAX},
{295, 336, 358, 375, UINT_MAX},
{325, 325, 358, 375, UINT_MAX},
{325, 325, 358, 375, UINT_MAX},
{292, 324, 348, 364, UINT_MAX},
{324, 324, 348, 364, UINT_MAX},
{324, 324, 348, 364, UINT_MAX},
{295, 336, 358, 375, UINT_MAX},
{358, 358, 358, 358, 397, UINT_MAX},
{364, 364, 364, 364, 397, UINT_MAX},
{295, 336, 358, 375, 391, UINT_MAX},
{295, 336, 358, 375, 391, UINT_MAX},
};
static int threshold_index __initdata;
static void __init fuse_speedo_calib(u32 *speedo_g, u32 *speedo_lp)
{
u32 reg;
int ate_ver;
int bit_minus1;
int bit_minus2;
reg = tegra_fuse_read_early(FUSE_SPEEDO_CALIB_0);
*speedo_lp = (reg & 0xFFFF) * 4;
*speedo_g = ((reg >> 16) & 0xFFFF) * 4;
ate_ver = tegra_fuse_read_early(FUSE_TEST_PROG_VER);
pr_debug("Tegra ATE prog ver %d.%d\n", ate_ver/10, ate_ver%10);
if (ate_ver >= 26) {
bit_minus1 = tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS1);
bit_minus1 |= tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS1_R);
bit_minus2 = tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS2);
bit_minus2 |= tegra_fuse_read_spare(LP_SPEEDO_BIT_MINUS2_R);
*speedo_lp |= (bit_minus1 << 1) | bit_minus2;
bit_minus1 = tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS1);
bit_minus1 |= tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS1_R);
bit_minus2 = tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS2);
bit_minus2 |= tegra_fuse_read_spare(G_SPEEDO_BIT_MINUS2_R);
*speedo_g |= (bit_minus1 << 1) | bit_minus2;
} else {
*speedo_lp |= 0x3;
*speedo_g |= 0x3;
}
}
static void __init rev_sku_to_speedo_ids(struct tegra_sku_info *sku_info)
{
int package_id = tegra_fuse_read_early(FUSE_PACKAGE_INFO) & 0x0F;
switch (sku_info->revision) {
case TEGRA_REVISION_A01:
sku_info->cpu_speedo_id = 0;
sku_info->soc_speedo_id = 0;
threshold_index = THRESHOLD_INDEX_0;
break;
case TEGRA_REVISION_A02:
case TEGRA_REVISION_A03:
switch (sku_info->sku_id) {
case 0x87:
case 0x82:
sku_info->cpu_speedo_id = 1;
sku_info->soc_speedo_id = 1;
threshold_index = THRESHOLD_INDEX_1;
break;
case 0x81:
switch (package_id) {
case 1:
sku_info->cpu_speedo_id = 2;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_2;
break;
case 2:
sku_info->cpu_speedo_id = 4;
sku_info->soc_speedo_id = 1;
threshold_index = THRESHOLD_INDEX_7;
break;
default:
pr_err("Tegra Unknown pkg %d\n", package_id);
break;
}
break;
case 0x80:
switch (package_id) {
case 1:
sku_info->cpu_speedo_id = 5;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_8;
break;
case 2:
sku_info->cpu_speedo_id = 6;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_9;
break;
default:
pr_err("Tegra Unknown pkg %d\n", package_id);
break;
}
break;
case 0x83:
switch (package_id) {
case 1:
sku_info->cpu_speedo_id = 7;
sku_info->soc_speedo_id = 1;
threshold_index = THRESHOLD_INDEX_10;
break;
case 2:
sku_info->cpu_speedo_id = 3;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_3;
break;
default:
pr_err("Tegra Unknown pkg %d\n", package_id);
break;
}
break;
case 0x8F:
sku_info->cpu_speedo_id = 8;
sku_info->soc_speedo_id = 1;
threshold_index = THRESHOLD_INDEX_11;
break;
case 0x08:
sku_info->cpu_speedo_id = 1;
sku_info->soc_speedo_id = 1;
threshold_index = THRESHOLD_INDEX_4;
break;
case 0x02:
sku_info->cpu_speedo_id = 2;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_5;
break;
case 0x04:
sku_info->cpu_speedo_id = 3;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_6;
break;
case 0:
switch (package_id) {
case 1:
sku_info->cpu_speedo_id = 2;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_2;
break;
case 2:
sku_info->cpu_speedo_id = 3;
sku_info->soc_speedo_id = 2;
threshold_index = THRESHOLD_INDEX_3;
break;
default:
pr_err("Tegra Unknown pkg %d\n", package_id);
break;
}
break;
default:
pr_warn("Tegra Unknown SKU %d\n", sku_info->sku_id);
sku_info->cpu_speedo_id = 0;
sku_info->soc_speedo_id = 0;
threshold_index = THRESHOLD_INDEX_0;
break;
}
break;
default:
pr_warn("Tegra Unknown chip rev %d\n", sku_info->revision);
sku_info->cpu_speedo_id = 0;
sku_info->soc_speedo_id = 0;
threshold_index = THRESHOLD_INDEX_0;
break;
}
}
void __init tegra30_init_speedo_data(struct tegra_sku_info *sku_info)
{
u32 cpu_speedo_val;
u32 soc_speedo_val;
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);
fuse_speedo_calib(&cpu_speedo_val, &soc_speedo_val);
pr_debug("Tegra CPU speedo value %u\n", cpu_speedo_val);
pr_debug("Tegra Core speedo value %u\n", soc_speedo_val);
for (i = 0; i < CPU_PROCESS_CORNERS; i++) {
if (cpu_speedo_val < cpu_process_speedos[threshold_index][i])
break;
}
sku_info->cpu_process_id = i - 1;
if (sku_info->cpu_process_id == -1) {
pr_warn("Tegra CPU speedo value %3d out of range",
cpu_speedo_val);
sku_info->cpu_process_id = 0;
sku_info->cpu_speedo_id = 1;
}
for (i = 0; i < SOC_PROCESS_CORNERS; i++) {
if (soc_speedo_val < soc_process_speedos[threshold_index][i])
break;
}
sku_info->soc_process_id = i - 1;
if (sku_info->soc_process_id == -1) {
pr_warn("Tegra SoC speedo value %3d out of range",
soc_speedo_val);
sku_info->soc_process_id = 0;
sku_info->soc_speedo_id = 1;
}
}
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