1 /*
2 * (C) Copyright 2010-2013
3 * NVIDIA Corporation <www.nvidia.com>
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <asm/arch/pinmux.h>
11 #include <asm/arch/gp_padctrl.h>
12 #include <asm/arch/gpio.h>
13 #include <asm/gpio.h>
14 #include "pinmux-config-cardhu.h"
15 #include <i2c.h>
16
17 #define PMU_I2C_ADDRESS 0x2D
18 #define MAX_I2C_RETRY 3
19
20 /*
21 * Routine: pinmux_init
22 * Description: Do individual peripheral pinmux configs
23 */
pinmux_init(void)24 void pinmux_init(void)
25 {
26 pinmux_config_pingrp_table(tegra3_pinmux_common,
27 ARRAY_SIZE(tegra3_pinmux_common));
28
29 pinmux_config_pingrp_table(unused_pins_lowpower,
30 ARRAY_SIZE(unused_pins_lowpower));
31
32 /* Initialize any non-default pad configs (APB_MISC_GP regs) */
33 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl));
34 }
35
36 #if defined(CONFIG_MMC_SDHCI_TEGRA)
37 /*
38 * Do I2C/PMU writes to bring up SD card bus power
39 *
40 */
board_sdmmc_voltage_init(void)41 void board_sdmmc_voltage_init(void)
42 {
43 struct udevice *dev;
44 uchar reg, data_buffer[1];
45 int ret;
46 int i;
47
48 ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
49 if (ret) {
50 debug("%s: Cannot find PMIC I2C chip\n", __func__);
51 return;
52 }
53
54 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */
55 data_buffer[0] = 0x65;
56 reg = 0x32;
57
58 for (i = 0; i < MAX_I2C_RETRY; ++i) {
59 if (dm_i2c_write(dev, reg, data_buffer, 1))
60 udelay(100);
61 }
62
63 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */
64 data_buffer[0] = 0x09;
65 reg = 0x67;
66
67 for (i = 0; i < MAX_I2C_RETRY; ++i) {
68 if (dm_i2c_write(dev, reg, data_buffer, 1))
69 udelay(100);
70 }
71 }
72
73 /*
74 * Routine: pin_mux_mmc
75 * Description: setup the MMC muxes, power rails, etc.
76 */
pin_mux_mmc(void)77 void pin_mux_mmc(void)
78 {
79 /*
80 * NOTE: We don't do mmc-specific pin muxes here.
81 * They were done globally in pinmux_init().
82 */
83
84 /* Bring up the SDIO1 power rail */
85 board_sdmmc_voltage_init();
86 }
87 #endif /* MMC */
88
89 #ifdef CONFIG_PCI_TEGRA
tegra_pcie_board_init(void)90 int tegra_pcie_board_init(void)
91 {
92 struct udevice *dev;
93 u8 addr, data[1];
94 int err;
95
96 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
97 if (err) {
98 debug("failed to find PMU bus\n");
99 return err;
100 }
101
102 /* TPS659110: LDO1_REG = 1.05V, ACTIVE */
103 data[0] = 0x15;
104 addr = 0x30;
105
106 err = dm_i2c_write(dev, addr, data, 1);
107 if (err) {
108 debug("failed to set VDD supply\n");
109 return err;
110 }
111
112 /* GPIO: PEX = 3.3V */
113 err = gpio_request(TEGRA_GPIO(L, 7), "PEX");
114 if (err < 0)
115 return err;
116
117 gpio_direction_output(TEGRA_GPIO(L, 7), 1);
118
119 /* TPS659110: LDO2_REG = 1.05V, ACTIVE */
120 data[0] = 0x15;
121 addr = 0x31;
122
123 err = dm_i2c_write(dev, addr, data, 1);
124 if (err) {
125 debug("failed to set AVDD supply\n");
126 return err;
127 }
128
129 return 0;
130 }
131 #endif /* PCI */
132