tegra: jetson-tk1: enable 1.05V_RUN
Needed for the PCIe PLL amongst other things. Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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@ -3,5 +3,5 @@ CFLAGS_pbl-entry.o := \
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-fno-tree-switch-conversion -fno-jump-tables
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soc := tegra124
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lwl-y += entry.o
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#obj-y += board.o
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obj-y += board.o
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extra-y += jetson-tk1-2gb-emmc.bct
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@ -0,0 +1,50 @@
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/*
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* Copyright (C) 2014 Lucas Stach <l.stach@pengutronix.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <common.h>
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#include <dt-bindings/gpio/tegra-gpio.h>
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#include <gpio.h>
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#include <i2c/i2c.h>
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#include <init.h>
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#define AS3722_SD_VOLTAGE(n) (0x00 + (n))
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#define AS3722_GPIO_CONTROL(n) (0x08 + (n))
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#define AS3722_GPIO_CONTROL_MODE_OUTPUT_VDDH (1 << 0)
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#define AS3722_GPIO_SIGNAL_OUT 0x20
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#define AS3722_SD_CONTROL 0x4d
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static int nvidia_jetson_tk1_devices_init(void)
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{
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struct i2c_client client;
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u8 data;
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if (!of_machine_is_compatible("nvidia,jetson-tk1"))
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return 0;
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client.adapter = i2c_get_adapter(4);
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client.addr = 0x40;
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/* AS3722: enable SD4 and set voltage to 1.05v */
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i2c_read_reg(&client, AS3722_SD_CONTROL, &data, 1);
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data |= 1 << 4;
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i2c_write_reg(&client, AS3722_SD_CONTROL, &data, 1);
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data = 0x24;
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i2c_write_reg(&client, AS3722_SD_VOLTAGE(4), &data, 1);
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return 0;
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}
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fs_initcall(nvidia_jetson_tk1_devices_init);
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@ -70,6 +70,8 @@ config MACH_NVIDIA_BEAVER
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config MACH_NVIDIA_JETSON
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bool "NVIDIA Jetson TK1"
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select ARCH_TEGRA_124_SOC
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select I2C
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select I2C_TEGRA
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endmenu
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