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
72
73
74
75
76
77
78
79
80
81
82
83
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Christian Hemp
*/
#include <asm/memory.h>
#include <bootsource.h>
#include <environment.h>
#include <common.h>
#include <init.h>
#include <linux/sizes.h>
#include <mach/imx/bbu.h>
#include <mfd/pfuze.h>
#include <linux/regmap.h>
#include <envfs.h>
#define PFUZE100_DEVICEID 0x0
#define PFUZE100_REVID 0x3
#define PFUZE100_SW1ABMODE 0x23
#define PFUZE100_SW2MODE 0x38
#define PFUZE100_SW1CMODE 0x31
#define PFUZE100_SW3AVOL 0x3c
#define APS_PFM 0xc
static void imx8mq_setup_pmic_voltages(struct regmap *map)
{
int offset = PFUZE100_SW1CMODE;
int switch_num = 6;
int val, i;
regmap_read(map, PFUZE100_SW3AVOL, &val);
/* ensure the correct VDD_DRAM_0V9 output voltage */
regmap_write_bits(map, PFUZE100_SW3AVOL, 0x3f, 0x18);
/* pfuze200 */
regmap_read(map, PFUZE100_DEVICEID, &val);
if (val & 0xf) {
offset = PFUZE100_SW2MODE;
switch_num = 4;
}
/* set all switches APS in normal and PFM mode in standby */
regmap_write(map, PFUZE100_SW1ABMODE, APS_PFM);
for (i = 0; i < switch_num - 1; i++)
regmap_write(map, offset + i * 7, APS_PFM);
}
static int physom_imx8mq_devices_init(void)
{
int flag_emmc = 0;
int flag_sd = 0;
if (!of_machine_is_compatible("phytec,imx8mq-pcl066"))
return 0;
barebox_set_hostname("phycore-imx8mq");
pfuze_register_init_callback(imx8mq_setup_pmic_voltages);
switch (bootsource_get_instance()) {
case 0:
flag_emmc = BBU_HANDLER_FLAG_DEFAULT;
of_device_enable_path("/chosen/environment-emmc");
break;
case 1:
default:
flag_sd = BBU_HANDLER_FLAG_DEFAULT;
of_device_enable_path("/chosen/environment-sd");
break;
}
imx8m_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc0.barebox", flag_emmc);
imx8m_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox", flag_sd);
return 0;
}
device_initcall(physom_imx8mq_devices_init);
|
