1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2013-2015
4 * NVIDIA Corporation <www.nvidia.com>
5 */
6
7 #include <common.h>
8 #include <i2c.h>
9 #include <asm/arch/gpio.h>
10 #include <asm/arch/pinmux.h>
11 #include "../p2571/max77620_init.h"
12 #include "pinmux-config-p2371-2180.h"
13
pin_mux_mmc(void)14 void pin_mux_mmc(void)
15 {
16 struct udevice *dev;
17 uchar val;
18 int ret;
19
20 /* Turn on MAX77620 LDO2 to 3.3V for SD card power */
21 debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
22 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
23 if (ret) {
24 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
25 return;
26 }
27 /* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
28 val = 0xF2;
29 ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
30 if (ret)
31 printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
32
33 /* Disable LDO4 discharge */
34 ret = dm_i2c_read(dev, MAX77620_CNFG2_L4_REG, &val, 1);
35 if (ret) {
36 printf("i2c_read 0 0x3c 0x2c failed: %d\n", ret);
37 } else {
38 val &= ~BIT(1); /* ADE */
39 ret = dm_i2c_write(dev, MAX77620_CNFG2_L4_REG, &val, 1);
40 if (ret)
41 printf("i2c_write 0 0x3c 0x2c failed: %d\n", ret);
42 }
43
44 /* Set MBLPD */
45 ret = dm_i2c_read(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
46 if (ret) {
47 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
48 } else {
49 val |= BIT(6); /* MBLPD */
50 ret = dm_i2c_write(dev, MAX77620_CNFGGLBL1_REG, &val, 1);
51 if (ret)
52 printf("i2c_write 0 0x3c 0x00 failed: %d\n", ret);
53 }
54 }
55
56 /*
57 * Routine: pinmux_init
58 * Description: Do individual peripheral pinmux configs
59 */
pinmux_init(void)60 void pinmux_init(void)
61 {
62 pinmux_clear_tristate_input_clamping();
63
64 gpio_config_table(p2371_2180_gpio_inits,
65 ARRAY_SIZE(p2371_2180_gpio_inits));
66
67 pinmux_config_pingrp_table(p2371_2180_pingrps,
68 ARRAY_SIZE(p2371_2180_pingrps));
69
70 pinmux_config_drvgrp_table(p2371_2180_drvgrps,
71 ARRAY_SIZE(p2371_2180_drvgrps));
72 }
73
74 #ifdef CONFIG_PCI_TEGRA
tegra_pcie_board_init(void)75 int tegra_pcie_board_init(void)
76 {
77 struct udevice *dev;
78 uchar val;
79 int ret;
80
81 /* Turn on MAX77620 LDO1 to 1.05V for PEX power */
82 debug("%s: Set LDO1 for PEX power to 1.05V\n", __func__);
83 ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
84 if (ret) {
85 printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
86 return -1;
87 }
88 /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
89 val = 0xCA;
90 ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1);
91 if (ret)
92 printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret);
93
94 return 0;
95 }
96 #endif /* PCI */
97