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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <string.h>
#include <baseboard/variants.h>
#include <ec/google/chromeec/ec.h>
#include <drivers/vpd/vpd.h>
#include <soc/cpu.h>
#include <soc/intel/apollolake/chip.h>
/* SKU ID enumeration */
enum snappy_sku {
SKU_UNKNOWN = -1,
SKU_RESERVED0,
SKU_RESERVED1,
SKU_BIGDADDY_KBDBKLIGHT,
SKU_RESERVED3,
SKU_RESERVED4,
SKU_BIGDADDY,
SKU_RESERVED6,
SKU_ALAN,
SKU_SNAPPY,
};
void variant_board_ec_set_skuid(void)
{
google_chromeec_set_sku_id(variant_board_sku());
}
/*
* override SKU ID by VPD definition
*/
uint8_t variant_board_sku(void)
{
static int board_sku_num = -1;
int vpd_sku_num;
char vpd_skuid[] = "skuid";
char vpd_buffer[4];
int vpd_len;
int i;
if (board_sku_num != -1)
return board_sku_num;
board_sku_num = sku_strapping_value();
if (!CONFIG(CHROMEOS))
return board_sku_num;
if (!vpd_gets(vpd_skuid, vpd_buffer, ARRAY_SIZE(vpd_buffer), VPD_ANY))
return board_sku_num;
vpd_len = strlen(vpd_buffer);
vpd_sku_num = 0;
for (i = 0; i < vpd_len; i++) {
char ch = vpd_buffer[i];
if ((ch < '0') || (ch > '9')) {
vpd_sku_num = -1;
break;
}
vpd_sku_num = vpd_sku_num * 10 + (ch - '0');
}
if (vpd_sku_num != -1)
board_sku_num = vpd_sku_num;
return board_sku_num;
}
void mainboard_devtree_update(struct device *dev)
{
/* Override dev tree settings per board */
struct soc_intel_apollolake_config *cfg = dev->chip_info;
uint8_t sku_id;
sku_id = variant_board_sku();
switch (sku_id) {
case SKU_ALAN:
cfg->usb2eye[2].Usb20PerPortPeTxiSet = 4;
cfg->usb2eye[2].Usb20PerPortTxiSet = 4;
cfg->usb2eye[2].Usb20IUsbTxEmphasisEn = 1;
cfg->usb2eye[2].Usb20PerPortTxPeHalf = 0;
cfg->usb2eye[4].Usb20PerPortPeTxiSet = 7;
cfg->usb2eye[4].Usb20PerPortTxiSet = 7;
cfg->usb2eye[4].Usb20IUsbTxEmphasisEn = 1;
cfg->usb2eye[4].Usb20PerPortTxPeHalf = 0;
break;
case SKU_BIGDADDY_KBDBKLIGHT:
case SKU_BIGDADDY:
cfg->usb2eye[1].Usb20PerPortPeTxiSet = 7;
cfg->usb2eye[1].Usb20PerPortTxiSet = 1;
cfg->usb2eye[1].Usb20IUsbTxEmphasisEn = 3;
cfg->usb2eye[1].Usb20PerPortTxPeHalf = 0;
cfg->usb2eye[2].Usb20PerPortPeTxiSet = 4;
cfg->usb2eye[2].Usb20PerPortTxiSet = 4;
cfg->usb2eye[2].Usb20IUsbTxEmphasisEn = 1;
cfg->usb2eye[2].Usb20PerPortTxPeHalf = 0;
cfg->usb2eye[4].Usb20PerPortPeTxiSet = 7;
cfg->usb2eye[4].Usb20PerPortTxiSet = 7;
cfg->usb2eye[4].Usb20IUsbTxEmphasisEn = 1;
cfg->usb2eye[4].Usb20PerPortTxPeHalf = 0;
break;
default:
break;
}
}
|
