diff options
Diffstat (limited to 'roms/u-boot/board/avionic-design/common/tamonten-ng.c')
-rw-r--r-- | roms/u-boot/board/avionic-design/common/tamonten-ng.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/roms/u-boot/board/avionic-design/common/tamonten-ng.c b/roms/u-boot/board/avionic-design/common/tamonten-ng.c new file mode 100644 index 000000000..29bde6022 --- /dev/null +++ b/roms/u-boot/board/avionic-design/common/tamonten-ng.c @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2013 + * Avionic Design GmbH <www.avionic-design.de> + */ + +#include <common.h> +#include <dm.h> +#include <log.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/gp_padctrl.h> +#include <asm/arch/gpio.h> +#include <asm/gpio.h> +#include "pinmux-config-tamonten-ng.h" +#include <i2c.h> + +#define PMU_I2C_ADDRESS 0x2D + +#define PMU_REG_LDO5 0x32 + +#define PMU_REG_LDO_HIGH_POWER 1 + +/* Voltage selection for the LDOs with 100mV resolution */ +#define PMU_REG_LDO_SEL_100(mV) ((((mV - 1000) / 100) + 2) << 2) + +#define PMU_REG_LDO_100(st, mV) (PMU_REG_LDO_##st | PMU_REG_LDO_SEL_100(mV)) + +#define PMU_LDO5(st, mV) PMU_REG_LDO_100(st, mV) + +void pinmux_init(void) +{ + pinmux_config_pingrp_table(tamonten_ng_pinmux_common, + ARRAY_SIZE(tamonten_ng_pinmux_common)); + pinmux_config_pingrp_table(unused_pins_lowpower, + ARRAY_SIZE(unused_pins_lowpower)); + + /* Initialize any non-default pad configs (APB_MISC_GP regs) */ + pinmux_config_drvgrp_table(tamonten_ng_padctrl, + ARRAY_SIZE(tamonten_ng_padctrl)); +} + +void gpio_early_init(void) +{ + /* Turn on the alive signal */ + gpio_request(TEGRA_GPIO(V, 2), "ALIVE"); + gpio_direction_output(TEGRA_GPIO(V, 2), 1); + + /* Remove the reset on the external periph */ + gpio_request(TEGRA_GPIO(I, 4), "nRST_PERIPH"); + gpio_direction_output(TEGRA_GPIO(I, 4), 1); +} + +void pmu_write(uchar reg, uchar data) +{ + struct udevice *dev; + int ret; + + ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, 1, &dev); + if (ret) { + debug("%s: Cannot find PMIC I2C chip\n", __func__); + return; + } + dm_i2c_write(dev, reg, &data, 1); +} + +/* + * Do I2C/PMU writes to bring up SD card bus power + * + */ +void board_sdmmc_voltage_init(void) +{ + /* Enable LDO5 with 3.3v for SDMMC3 */ + pmu_write(PMU_REG_LDO5, PMU_LDO5(HIGH_POWER, 3300)); + + /* Switch the power on */ + gpio_request(TEGRA_GPIO(J, 2), "EN_3V3_EMMC"); + gpio_direction_output(TEGRA_GPIO(J, 2), 1); +} + +/* + * Routine: pin_mux_mmc + * Description: setup the MMC muxes, power rails, etc. + */ +void pin_mux_mmc(void) +{ + /* + * NOTE: We don't do mmc-specific pin muxes here. + * They were done globally in pinmux_init(). + */ + + /* Bring up the SDIO1 power rail */ + board_sdmmc_voltage_init(); +} |