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