| Kever Yang | 0a2a5e1 | 2019-03-29 09:09:01 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* |
| 3 | * (C) Copyright 2019 Rockchip Electronics Co., Ltd |
| 4 | */ |
| 5 | #include <common.h> |
| 6 | #include <asm/io.h> |
| 7 | #include <asm/arch-rockchip/grf_rk3188.h> |
| 8 | #include <asm/arch-rockchip/hardware.h> |
| 9 | |
| 10 | #ifdef CONFIG_DEBUG_UART_BOARD_INIT |
| 11 | void board_debug_uart_init(void) |
| 12 | { |
| 13 | /* Enable early UART on the RK3188 */ |
| 14 | #define GRF_BASE 0x20008000 |
| 15 | struct rk3188_grf * const grf = (void *)GRF_BASE; |
| 16 | enum { |
| 17 | GPIO1B1_SHIFT = 2, |
| 18 | GPIO1B1_MASK = 3, |
| 19 | GPIO1B1_GPIO = 0, |
| 20 | GPIO1B1_UART2_SOUT, |
| 21 | GPIO1B1_JTAG_TDO, |
| 22 | |
| 23 | GPIO1B0_SHIFT = 0, |
| 24 | GPIO1B0_MASK = 3, |
| 25 | GPIO1B0_GPIO = 0, |
| 26 | GPIO1B0_UART2_SIN, |
| 27 | GPIO1B0_JTAG_TDI, |
| 28 | }; |
| 29 | |
| 30 | rk_clrsetreg(&grf->gpio1b_iomux, |
| 31 | GPIO1B1_MASK << GPIO1B1_SHIFT | |
| 32 | GPIO1B0_MASK << GPIO1B0_SHIFT, |
| 33 | GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | |
| 34 | GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); |
| 35 | } |
| 36 | #endif |