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 <log.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 <linux/delay.h>
15 #include "pinmux-config-cardhu.h"
16 #include <i2c.h>
17
18 #define PMU_I2C_ADDRESS 0x2D
19 #define MAX_I2C_RETRY 3
20
21 /*
22 * Routine: pinmux_init
23 * Description: Do individual peripheral pinmux configs
24 */
pinmux_init(void)25 void pinmux_init(void)
26 {
27 pinmux_config_pingrp_table(tegra3_pinmux_common,
28 ARRAY_SIZE(tegra3_pinmux_common));
29
30 pinmux_config_pingrp_table(unused_pins_lowpower,
31 ARRAY_SIZE(unused_pins_lowpower));
32
33 /* Initialize any non-default pad configs (APB_MISC_GP regs) */
34 pinmux_config_drvgrp_table(cardhu_padctrl, ARRAY_SIZE(cardhu_padctrl));
35 }
36
37 #if defined(CONFIG_MMC_SDHCI_TEGRA)
38 /*
39 * Do I2C/PMU writes to bring up SD card bus power
40 *
41 */
board_sdmmc_voltage_init(void)42 void board_sdmmc_voltage_init(void)
43 {
44 struct udevice *dev;
45 uchar reg, data_buffer[1];
46 int ret;
47 int i;
48
49 ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
50 if (ret) {
51 debug("%s: Cannot find PMIC I2C chip\n", __func__);
52 return;
53 }
54
55 /* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */
56 data_buffer[0] = 0x65;
57 reg = 0x32;
58
59 for (i = 0; i < MAX_I2C_RETRY; ++i) {
60 if (dm_i2c_write(dev, reg, data_buffer, 1))
61 udelay(100);
62 }
63
64 /* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */
65 data_buffer[0] = 0x09;
66 reg = 0x67;
67
68 for (i = 0; i < MAX_I2C_RETRY; ++i) {
69 if (dm_i2c_write(dev, reg, data_buffer, 1))
70 udelay(100);
71 }
72 }
73
74 /*
75 * Routine: pin_mux_mmc
76 * Description: setup the MMC muxes, power rails, etc.
77 */
pin_mux_mmc(void)78 void pin_mux_mmc(void)
79 {
80 /*
81 * NOTE: We don't do mmc-specific pin muxes here.
82 * They were done globally in pinmux_init().
83 */
84
85 /* Bring up the SDIO1 power rail */
86 board_sdmmc_voltage_init();
87 }
88 #endif /* MMC */
89
90 #ifdef CONFIG_PCI_TEGRA
tegra_pcie_board_init(void)91 int tegra_pcie_board_init(void)
92 {
93 struct udevice *dev;
94 u8 addr, data[1];
95 int err;
96
97 err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
98 if (err) {
99 debug("failed to find PMU bus\n");
100 return err;
101 }
102
103 /* TPS659110: LDO1_REG = 1.05V, ACTIVE */
104 data[0] = 0x15;
105 addr = 0x30;
106
107 err = dm_i2c_write(dev, addr, data, 1);
108 if (err) {
109 debug("failed to set VDD supply\n");
110 return err;
111 }
112
113 /* GPIO: PEX = 3.3V */
114 err = gpio_request(TEGRA_GPIO(L, 7), "PEX");
115 if (err < 0)
116 return err;
117
118 gpio_direction_output(TEGRA_GPIO(L, 7), 1);
119
120 /* TPS659110: LDO2_REG = 1.05V, ACTIVE */
121 data[0] = 0x15;
122 addr = 0x31;
123
124 err = dm_i2c_write(dev, addr, data, 1);
125 if (err) {
126 debug("failed to set AVDD supply\n");
127 return err;
128 }
129
130 return 0;
131 }
132 #endif /* PCI */
133