1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Utility functions for parsing Tegra CVB voltage tables
4 */
5
6#ifndef __DRIVERS_CLK_TEGRA_CVB_H
7#define __DRIVERS_CLK_TEGRA_CVB_H
8
9#include <linux/types.h>
10
11struct device;
12
13#define MAX_DVFS_FREQS 40
14
15struct rail_alignment {
16 int offset_uv;
17 int step_uv;
18};
19
20struct cvb_coefficients {
21 int c0;
22 int c1;
23 int c2;
24};
25
26struct cvb_table_freq_entry {
27 unsigned long freq;
28 struct cvb_coefficients coefficients;
29};
30
31struct cvb_cpu_dfll_data {
32 u32 tune0_low;
33 u32 tune0_high;
34 u32 tune1;
35 unsigned int tune_high_min_millivolts;
36};
37
38struct cvb_table {
39 int speedo_id;
40 int process_id;
41
42 int min_millivolts;
43 int max_millivolts;
44
45 int speedo_scale;
46 int voltage_scale;
47 struct cvb_table_freq_entry entries[MAX_DVFS_FREQS];
48 struct cvb_cpu_dfll_data cpu_dfll_data;
49};
50
51const struct cvb_table *
52tegra_cvb_add_opp_table(struct device *dev, const struct cvb_table *cvb_tables,
53 size_t count, struct rail_alignment *align,
54 int process_id, int speedo_id, int speedo_value,
55 unsigned long max_freq);
56void tegra_cvb_remove_opp_table(struct device *dev,
57 const struct cvb_table *table,
58 unsigned long max_freq);
59
60#endif
61

source code of linux/drivers/clk/tegra/cvb.h