1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * (C) Copyright 2013
3*4882a593Smuzhiyun * Avionic Design GmbH <www.avionic-design.de>
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun #include <common.h>
9*4882a593Smuzhiyun #include <dm.h>
10*4882a593Smuzhiyun #include <asm/arch/pinmux.h>
11*4882a593Smuzhiyun #include <asm/arch/gp_padctrl.h>
12*4882a593Smuzhiyun #include <asm/arch/gpio.h>
13*4882a593Smuzhiyun #include <asm/gpio.h>
14*4882a593Smuzhiyun #include "pinmux-config-tamonten-ng.h"
15*4882a593Smuzhiyun #include <i2c.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #define PMU_I2C_ADDRESS 0x2D
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #define PMU_REG_LDO5 0x32
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #define PMU_REG_LDO_HIGH_POWER 1
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun /* Voltage selection for the LDOs with 100mV resolution */
24*4882a593Smuzhiyun #define PMU_REG_LDO_SEL_100(mV) ((((mV - 1000) / 100) + 2) << 2)
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun #define PMU_REG_LDO_100(st, mV) (PMU_REG_LDO_##st | PMU_REG_LDO_SEL_100(mV))
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #define PMU_LDO5(st, mV) PMU_REG_LDO_100(st, mV)
29*4882a593Smuzhiyun
pinmux_init(void)30*4882a593Smuzhiyun void pinmux_init(void)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun pinmux_config_pingrp_table(tamonten_ng_pinmux_common,
33*4882a593Smuzhiyun ARRAY_SIZE(tamonten_ng_pinmux_common));
34*4882a593Smuzhiyun pinmux_config_pingrp_table(unused_pins_lowpower,
35*4882a593Smuzhiyun ARRAY_SIZE(unused_pins_lowpower));
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun /* Initialize any non-default pad configs (APB_MISC_GP regs) */
38*4882a593Smuzhiyun pinmux_config_drvgrp_table(tamonten_ng_padctrl,
39*4882a593Smuzhiyun ARRAY_SIZE(tamonten_ng_padctrl));
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
gpio_early_init(void)42*4882a593Smuzhiyun void gpio_early_init(void)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun /* Turn on the alive signal */
45*4882a593Smuzhiyun gpio_request(TEGRA_GPIO(V, 2), "ALIVE");
46*4882a593Smuzhiyun gpio_direction_output(TEGRA_GPIO(V, 2), 1);
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun /* Remove the reset on the external periph */
49*4882a593Smuzhiyun gpio_request(TEGRA_GPIO(I, 4), "nRST_PERIPH");
50*4882a593Smuzhiyun gpio_direction_output(TEGRA_GPIO(I, 4), 1);
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
pmu_write(uchar reg,uchar data)53*4882a593Smuzhiyun void pmu_write(uchar reg, uchar data)
54*4882a593Smuzhiyun {
55*4882a593Smuzhiyun struct udevice *dev;
56*4882a593Smuzhiyun int ret;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, 1, &dev);
59*4882a593Smuzhiyun if (ret) {
60*4882a593Smuzhiyun debug("%s: Cannot find PMIC I2C chip\n", __func__);
61*4882a593Smuzhiyun return;
62*4882a593Smuzhiyun }
63*4882a593Smuzhiyun dm_i2c_write(dev, reg, &data, 1);
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun /*
67*4882a593Smuzhiyun * Do I2C/PMU writes to bring up SD card bus power
68*4882a593Smuzhiyun *
69*4882a593Smuzhiyun */
board_sdmmc_voltage_init(void)70*4882a593Smuzhiyun void board_sdmmc_voltage_init(void)
71*4882a593Smuzhiyun {
72*4882a593Smuzhiyun /* Enable LDO5 with 3.3v for SDMMC3 */
73*4882a593Smuzhiyun pmu_write(PMU_REG_LDO5, PMU_LDO5(HIGH_POWER, 3300));
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun /* Switch the power on */
76*4882a593Smuzhiyun gpio_request(TEGRA_GPIO(J, 2), "EN_3V3_EMMC");
77*4882a593Smuzhiyun gpio_direction_output(TEGRA_GPIO(J, 2), 1);
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun /*
81*4882a593Smuzhiyun * Routine: pin_mux_mmc
82*4882a593Smuzhiyun * Description: setup the MMC muxes, power rails, etc.
83*4882a593Smuzhiyun */
pin_mux_mmc(void)84*4882a593Smuzhiyun void pin_mux_mmc(void)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun /*
87*4882a593Smuzhiyun * NOTE: We don't do mmc-specific pin muxes here.
88*4882a593Smuzhiyun * They were done globally in pinmux_init().
89*4882a593Smuzhiyun */
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun /* Bring up the SDIO1 power rail */
92*4882a593Smuzhiyun board_sdmmc_voltage_init();
93*4882a593Smuzhiyun }
94