// SPDX-License-Identifier: GPL-2.0-only // SPDX-FileCopyrightText: 2014 Lucas Stach <l.stach@pengutronix.de> #include <common.h> #include <dt-bindings/gpio/tegra-gpio.h> #include <gpio.h> #include <i2c/i2c.h> #include <init.h> #include <mach/tegra-bbu.h> #define AS3722_SD_VOLTAGE(n) (0x00 + (n)) #define AS3722_GPIO_CONTROL(n) (0x08 + (n)) #define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH (1 << 0) #define AS3722_GPIO_SIGNAL_OUT 0x20 #define AS3722_SD_CONTROL 0x4d static int nvidia_jetson_tk1_fs_init(void) { struct i2c_client client; u8 data; if (!of_machine_is_compatible("nvidia,jetson-tk1")) return 0; client.adapter = i2c_get_adapter(4); client.addr = 0x40; /* AS3722: enable SD4 and set voltage to 1.05v */ i2c_read_reg(&client, AS3722_SD_CONTROL, &data, 1); data |= 1 << 4; i2c_write_reg(&client, AS3722_SD_CONTROL, &data, 1); data = 0x24; i2c_write_reg(&client, AS3722_SD_VOLTAGE(4), &data, 1); return 0; } fs_initcall(nvidia_jetson_tk1_fs_init); static int nvidia_jetson_tk1_device_init(void) { if (!of_machine_is_compatible("nvidia,jetson-tk1")) return 0; barebox_set_hostname("jetson-tk1"); tegra_bbu_register_emmc_handler("eMMC", "/dev/mmc3.boot0", BBU_HANDLER_FLAG_DEFAULT); return 0; } device_initcall(nvidia_jetson_tk1_device_init);