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