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// 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/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);
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