1 // SPDX-License-Identifier: GPL-2.0+
4 * Avionic Design GmbH <www.avionic-design.de>
10 #include <asm/arch/pinmux.h>
11 #include <asm/arch/gp_padctrl.h>
12 #include <asm/arch/gpio.h>
14 #include "pinmux-config-tamonten-ng.h"
17 #define PMU_I2C_ADDRESS 0x2D
19 #define PMU_REG_LDO5 0x32
21 #define PMU_REG_LDO_HIGH_POWER 1
23 /* Voltage selection for the LDOs with 100mV resolution */
24 #define PMU_REG_LDO_SEL_100(mV) ((((mV - 1000) / 100) + 2) << 2)
26 #define PMU_REG_LDO_100(st, mV) (PMU_REG_LDO_##st | PMU_REG_LDO_SEL_100(mV))
28 #define PMU_LDO5(st, mV) PMU_REG_LDO_100(st, mV)
30 void pinmux_init(void)
32 pinmux_config_pingrp_table(tamonten_ng_pinmux_common,
33 ARRAY_SIZE(tamonten_ng_pinmux_common));
34 pinmux_config_pingrp_table(unused_pins_lowpower,
35 ARRAY_SIZE(unused_pins_lowpower));
37 /* Initialize any non-default pad configs (APB_MISC_GP regs) */
38 pinmux_config_drvgrp_table(tamonten_ng_padctrl,
39 ARRAY_SIZE(tamonten_ng_padctrl));
42 void gpio_early_init(void)
44 /* Turn on the alive signal */
45 gpio_request(TEGRA_GPIO(V, 2), "ALIVE");
46 gpio_direction_output(TEGRA_GPIO(V, 2), 1);
48 /* Remove the reset on the external periph */
49 gpio_request(TEGRA_GPIO(I, 4), "nRST_PERIPH");
50 gpio_direction_output(TEGRA_GPIO(I, 4), 1);
53 void pmu_write(uchar reg, uchar data)
58 ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, 1, &dev);
60 debug("%s: Cannot find PMIC I2C chip\n", __func__);
63 dm_i2c_write(dev, reg, &data, 1);
67 * Do I2C/PMU writes to bring up SD card bus power
70 void board_sdmmc_voltage_init(void)
72 /* Enable LDO5 with 3.3v for SDMMC3 */
73 pmu_write(PMU_REG_LDO5, PMU_LDO5(HIGH_POWER, 3300));
75 /* Switch the power on */
76 gpio_request(TEGRA_GPIO(J, 2), "EN_3V3_EMMC");
77 gpio_direction_output(TEGRA_GPIO(J, 2), 1);
81 * Routine: pin_mux_mmc
82 * Description: setup the MMC muxes, power rails, etc.
84 void pin_mux_mmc(void)
87 * NOTE: We don't do mmc-specific pin muxes here.
88 * They were done globally in pinmux_init().
91 /* Bring up the SDIO1 power rail */
92 board_sdmmc_voltage_init();