diff options
Diffstat (limited to 'arch/arm/mach-rockchip/rk3188/rk3188.c')
| -rw-r--r-- | arch/arm/mach-rockchip/rk3188/rk3188.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/mach-rockchip/rk3188/rk3188.c b/arch/arm/mach-rockchip/rk3188/rk3188.c new file mode 100644 index 0000000000..933484e0df --- /dev/null +++ b/arch/arm/mach-rockchip/rk3188/rk3188.c @@ -0,0 +1,36 @@ +// 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 |