blob: 2fa01edc074357a9ddf29f24857141baff483311 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// SPDX-License-Identifier: BSD-2-Clause
/*
* fdt_pmu.c - Flat Device Tree PMU helper routines
*
* Copyright (c) 2021 Western Digital Corporation or its affiliates.
*
* Authors:
* Atish Patra <atish.patra@wdc.com>
*/
#ifndef __FDT_PMU_H__
#define __FDT_PMU_H__
#include <sbi/sbi_types.h>
/**
* Fix up the PMU node in the device tree
*
* This routine:
* 1. Disables opensbi specific properties from the DT
*
* It is recommended that platform support call this function in
* their final_init() platform operation.
*
* @param fdt device tree blob
*/
void fdt_pmu_fixup(void *fdt);
/**
* Setup PMU data from device tree
*
* @param fdt device tree blob
*
* @return 0 on success and negative error code on failure
*/
int fdt_pmu_setup(void *fdt);
/**
* Get the mhpmevent select value read from DT for a given event
* @param event_idx Event ID of the given event
*
* @return The select value read from DT or 0 if given index was not found
*/
uint64_t fdt_pmu_get_select_value(uint32_t event_idx);
#endif
|
