u-boot/arch/arm/mach-rockchip/rk3188/rk3188.c
Kever Yang 86d0eca451 rockchip: rk3188: add board_debug_uart_init()
Use board_debug_uart_init() for UART iomux init instead of
do it in board_init_f, and move the function to soc file so
that we can find all the soc/board setting in soc file and
use a common board file.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2019-05-01 09:40:58 +02:00

36 lines
842 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2019 Rockchip Electronics Co., Ltd
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch-rockchip/grf_rk3188.h>
#include <asm/arch-rockchip/hardware.h>
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
/* Enable early UART on the RK3188 */
#define GRF_BASE 0x20008000
struct rk3188_grf * const grf = (void *)GRF_BASE;
enum {
GPIO1B1_SHIFT = 2,
GPIO1B1_MASK = 3,
GPIO1B1_GPIO = 0,
GPIO1B1_UART2_SOUT,
GPIO1B1_JTAG_TDO,
GPIO1B0_SHIFT = 0,
GPIO1B0_MASK = 3,
GPIO1B0_GPIO = 0,
GPIO1B0_UART2_SIN,
GPIO1B0_JTAG_TDI,
};
rk_clrsetreg(&grf->gpio1b_iomux,
GPIO1B1_MASK << GPIO1B1_SHIFT |
GPIO1B0_MASK << GPIO1B0_SHIFT,
GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT |
GPIO1B0_UART2_SIN << GPIO1B0_SHIFT);
}
#endif