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
|
/*
* (C) Copyright 2010-2012
* NVIDIA Corporation <www.nvidia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <asm/io.h>
#include <asm/arch/tegra.h>
#include <asm/arch/clock.h>
#include <asm/arch/funcmux.h>
#include <asm/arch/pinmux.h>
#include <asm/gpio.h>
#include <i2c.h>
#ifdef CONFIG_TEGRA_MMC
/*
* Routine: pin_mux_mmc
* Description: setup the pin muxes/tristate values for the SDMMC(s)
*/
void pin_mux_mmc(void)
{
struct udevice *dev;
uchar val;
int ret;
/* Turn on MAX8907B LDO12 to 2.8V for J40 power */
ret = i2c_get_chip_for_busnum(0, 0x3c, &dev);
if (ret) {
printf("%s: Cannot find MAX8907B I2C chip\n", __func__);
return;
}
val = 0x29;
ret = i2c_write(dev, 0x46, &val, 1);
if (ret)
printf("i2c_write 0 0x3c 0x46 failed: %d\n", ret);
val = 0x00;
ret = i2c_write(dev, 0x45, &val, 1);
if (ret)
printf("i2c_write 0 0x3c 0x45 failed: %d\n", ret);
val = 0x1f;
ret = i2c_write(dev, 0x44, &val, 1);
if (ret)
printf("i2c_write 0 0x3c 0x44 failed: %d\n", ret);
funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_SLXA_8BIT);
funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATC_ATD_8BIT);
}
#endif
/* this is a weak define that we are overriding */
void pin_mux_usb(void)
{
struct udevice *dev;
uchar val;
int ret;
/*
* This is a hack. This should be represented in DT using the
* vbus-gpio property. However, U-Boot's DT support doesn't
* support any GPIO controller other than the Tegra's yet.
*/
/* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */
ret = i2c_get_chip_for_busnum(0, 0x20, &dev);
if (ret) {
printf("%s: Cannot find TAC6416 I2C chip\n", __func__);
return;
}
val = 0x03;
ret = i2c_write(dev, 2, &val, 1);
if (ret)
printf("i2c_write 0 0x20 2 failed: %d\n", ret);
val = 0xfc;
ret = i2c_write(dev, 6, &val, 1);
if (ret)
printf("i2c_write 0 0x20 6 failed: %d\n", ret);
}
|
