u-boot/board/eets/pdu001/board.h
Felix Brack 85ab0452fe arm: add support for PDU001
This patch adds support for the PDU001 board.

Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Tom Rini <trini@konsulko.com>
2018-01-28 12:27:32 -05:00

38 lines
1.3 KiB
C

/*
* board.h
*
* EETS GmbH PDU001 board information header
*
* Copyright (C) 2018 EETS GmbH - http://www.eets.ch/
*
* Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _BOARD_H_
#define _BOARD_H_
/*
* We have two pin mux functions that must exist. First we need I2C0 to
* access the TPS65910 PMIC located on the M2 computing module.
* Second, if we want low-level debugging or a early UART (ie. before the
* pin controller driver is running), we need one of the UART ports UART0 to
* UART5 (usually UART3 since it is wired to K2).
* In case of I2C0 access we explicitly don't rely on the the ROM but we could
* do so as we use the primary mode (mode 0) for I2C0.
* All other multiplexing and pin configuration is done by the DT once it
* gets parsed by the pin controller driver.
* However we relay on the ROM to configure the pins of MMC0 (eMMC) as well
* as MMC1 (microSD card-cage) since these are our boot devices.
*/
void enable_uart0_pin_mux(void);
void enable_uart1_pin_mux(void);
void enable_uart2_pin_mux(void);
void enable_uart3_pin_mux(void);
void enable_uart4_pin_mux(void);
void enable_uart5_pin_mux(void);
void enable_uart_pin_mux(u32 addr);
void enable_i2c0_pin_mux(void);
#endif