1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2019 Rockchip Electronics Co., Ltd
9 #include <asm/arch-rockchip/grf_rk3036.h>
10 #include <asm/arch-rockchip/hardware.h>
11 #include <asm/arch-rockchip/sdram_rk3036.h>
13 DECLARE_GLOBAL_DATA_PTR;
15 #ifdef CONFIG_DEBUG_UART_BOARD_INIT
16 void board_debug_uart_init(void)
18 #define GRF_BASE 0x20008000
19 struct rk3036_grf * const grf = (void *)GRF_BASE;
22 GPIO1C3_MASK = 3 << GPIO1C3_SHIFT,
28 GPIO1C2_MASK = 3 << GPIO1C2_SHIFT,
34 * NOTE: sd card and debug uart use same iomux in rk3036,
35 * so if you enable uart,
36 * you can not boot from sdcard
38 rk_clrsetreg(&grf->gpio1c_iomux,
39 GPIO1C3_MASK << GPIO1C3_SHIFT |
40 GPIO1C2_MASK << GPIO1C2_SHIFT,
41 GPIO1C3_UART2_SOUT << GPIO1C3_SHIFT |
42 GPIO1C2_UART2_SIN << GPIO1C2_SHIFT);
46 #if !CONFIG_IS_ENABLED(RAM)
48 * When CONFIG_RAM is enabled, the dram_init() function is implemented
53 gd->ram_size = sdram_size();