blob: 816dff49835f3082c923242288bcf716d436db52 (
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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
*
* (C) COPYRIGHT 2011-2013 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <linux/io.h>
#include <mali_kbase.h>
#include "mali_kbase_cpu_vexpress.h"
#define HZ_IN_MHZ (1000000)
#define CORETILE_EXPRESS_A9X4_SCC_START (0x100E2000)
#define MOTHERBOARD_SYS_CFG_START (0x10000000)
#define SYS_CFGDATA_OFFSET (0x000000A0)
#define SYS_CFGCTRL_OFFSET (0x000000A4)
#define SYS_CFGSTAT_OFFSET (0x000000A8)
#define SYS_CFGCTRL_START_BIT_VALUE (1 << 31)
#define READ_REG_BIT_VALUE (0 << 30)
#define DCC_DEFAULT_BIT_VALUE (0 << 26)
#define SYS_CFG_OSC_FUNC_BIT_VALUE (1 << 20)
#define SITE_DEFAULT_BIT_VALUE (1 << 16)
#define BOARD_STACK_POS_DEFAULT_BIT_VALUE (0 << 12)
#define DEVICE_DEFAULT_BIT_VALUE (2 << 0)
#define SYS_CFG_COMPLETE_BIT_VALUE (1 << 0)
#define SYS_CFG_ERROR_BIT_VALUE (1 << 1)
#define FEED_REG_BIT_MASK (0x0F)
#define FCLK_PA_DIVIDE_BIT_SHIFT (0x03)
#define FCLK_PB_DIVIDE_BIT_SHIFT (0x07)
#define FCLK_PC_DIVIDE_BIT_SHIFT (0x0B)
#define AXICLK_PA_DIVIDE_BIT_SHIFT (0x0F)
#define AXICLK_PB_DIVIDE_BIT_SHIFT (0x13)
#define IS_SINGLE_BIT_SET(val, pos) (val&(1<<pos))
#define CPU_CLOCK_SPEED_UNDEFINED 0
#define CPU_CLOCK_SPEED_6XV7 50
static u32 cpu_clock_speed = CPU_CLOCK_SPEED_UNDEFINED;
static DEFINE_RAW_SPINLOCK(syscfg_lock);
/**
* kbase_get_vendor_specific_cpu_clock_speed
* @brief Retrieves the CPU clock speed.
* The implementation is platform specific.
* @param[out] cpu_clock - the value of CPU clock speed in MHz
* @return 0 on success, 1 otherwise
*/
int kbase_get_vexpress_cpu_clock_speed(u32 *cpu_clock)
{
/* TODO: MIDBASE-2873 - Provide runtime detection of CPU clock freq for 6XV7 board */
*cpu_clock = CPU_CLOCK_SPEED_6XV7;
return 0;
}
|
