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148 lines
3.4 KiB
148 lines
3.4 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/device.h> |
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#include <linux/kernel.h> |
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#include <linux/bug.h> |
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#include <soc/tegra/fuse.h> |
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#include "fuse.h" |
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#define CPU_PROCESS_CORNERS 2 |
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#define GPU_PROCESS_CORNERS 2 |
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#define SOC_PROCESS_CORNERS 2 |
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#define FUSE_CPU_SPEEDO_0 0x14 |
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#define FUSE_CPU_SPEEDO_1 0x2c |
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#define FUSE_CPU_SPEEDO_2 0x30 |
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#define FUSE_SOC_SPEEDO_0 0x34 |
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#define FUSE_SOC_SPEEDO_1 0x38 |
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#define FUSE_SOC_SPEEDO_2 0x3c |
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#define FUSE_CPU_IDDQ 0x18 |
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#define FUSE_SOC_IDDQ 0x40 |
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#define FUSE_GPU_IDDQ 0x128 |
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#define FUSE_FT_REV 0x28 |
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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 cpu_process_speedos[][CPU_PROCESS_CORNERS] = { |
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{2190, UINT_MAX}, |
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{0, UINT_MAX}, |
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}; |
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static const u32 __initconst gpu_process_speedos[][GPU_PROCESS_CORNERS] = { |
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{1965, UINT_MAX}, |
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{0, UINT_MAX}, |
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}; |
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static const u32 __initconst soc_process_speedos[][SOC_PROCESS_CORNERS] = { |
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{2101, 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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int sku = sku_info->sku_id; |
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/* Assign to default */ |
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sku_info->cpu_speedo_id = 0; |
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sku_info->soc_speedo_id = 0; |
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sku_info->gpu_speedo_id = 0; |
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*threshold = THRESHOLD_INDEX_0; |
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switch (sku) { |
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case 0x00: /* Eng sku */ |
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case 0x0F: |
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case 0x23: |
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/* Using the default */ |
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break; |
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case 0x83: |
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sku_info->cpu_speedo_id = 2; |
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break; |
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case 0x1F: |
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case 0x87: |
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case 0x27: |
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sku_info->cpu_speedo_id = 2; |
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sku_info->soc_speedo_id = 0; |
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sku_info->gpu_speedo_id = 1; |
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*threshold = THRESHOLD_INDEX_0; |
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break; |
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case 0x81: |
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case 0x21: |
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case 0x07: |
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sku_info->cpu_speedo_id = 1; |
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sku_info->soc_speedo_id = 1; |
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sku_info->gpu_speedo_id = 1; |
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*threshold = THRESHOLD_INDEX_1; |
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break; |
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case 0x49: |
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case 0x4A: |
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case 0x48: |
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sku_info->cpu_speedo_id = 4; |
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sku_info->soc_speedo_id = 2; |
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sku_info->gpu_speedo_id = 3; |
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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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/* Using the default for the error case */ |
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break; |
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} |
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} |
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void __init tegra124_init_speedo_data(struct tegra_sku_info *sku_info) |
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{ |
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int i, threshold, soc_speedo_0_value; |
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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(gpu_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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sku_info->cpu_speedo_value = tegra_fuse_read_early(FUSE_CPU_SPEEDO_0); |
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if (sku_info->cpu_speedo_value == 0) { |
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pr_warn("Tegra Warning: Speedo value not fused.\n"); |
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WARN_ON(1); |
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return; |
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} |
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/* GPU Speedo is stored in CPU_SPEEDO_2 */ |
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sku_info->gpu_speedo_value = tegra_fuse_read_early(FUSE_CPU_SPEEDO_2); |
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soc_speedo_0_value = tegra_fuse_read_early(FUSE_SOC_SPEEDO_0); |
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rev_sku_to_speedo_ids(sku_info, &threshold); |
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sku_info->cpu_iddq_value = tegra_fuse_read_early(FUSE_CPU_IDDQ); |
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for (i = 0; i < GPU_PROCESS_CORNERS; i++) |
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if (sku_info->gpu_speedo_value < |
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gpu_process_speedos[threshold][i]) |
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break; |
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sku_info->gpu_process_id = i; |
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for (i = 0; i < CPU_PROCESS_CORNERS; i++) |
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if (sku_info->cpu_speedo_value < |
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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_0_value < |
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soc_process_speedos[threshold][i]) |
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break; |
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sku_info->soc_process_id = i; |
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pr_debug("Tegra GPU Speedo ID=%d, Speedo Value=%d\n", |
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sku_info->gpu_speedo_id, sku_info->gpu_speedo_value); |
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}
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