2019-03-29 01:09:01 +00:00
|
|
|
// 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>
|
|
|
|
|
2019-07-22 11:59:14 +00:00
|
|
|
#define GRF_BASE 0x20008000
|
|
|
|
|
2019-03-29 01:09:01 +00:00
|
|
|
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
|
|
|
|
void board_debug_uart_init(void)
|
|
|
|
{
|
|
|
|
/* Enable early UART on the RK3188 */
|
|
|
|
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
|
2019-07-22 11:59:14 +00:00
|
|
|
|
|
|
|
int arch_cpu_init(void)
|
|
|
|
{
|
|
|
|
#ifdef CONFIG_ROCKCHIP_USB_UART
|
|
|
|
struct rk3188_grf * const grf = (void *)GRF_BASE;
|
|
|
|
|
|
|
|
rk_clrsetreg(&grf->uoc0_con[0],
|
|
|
|
SIDDQ_MASK | UOC_DISABLE_MASK | COMMON_ON_N_MASK,
|
|
|
|
1 << SIDDQ_SHIFT | 1 << UOC_DISABLE_SHIFT |
|
|
|
|
1 << COMMON_ON_N_SHIFT);
|
|
|
|
rk_clrsetreg(&grf->uoc0_con[2],
|
|
|
|
SOFT_CON_SEL_MASK, 1 << SOFT_CON_SEL_SHIFT);
|
|
|
|
rk_clrsetreg(&grf->uoc0_con[3],
|
|
|
|
OPMODE_MASK | XCVRSELECT_MASK |
|
|
|
|
TERMSEL_FULLSPEED_MASK | SUSPENDN_MASK,
|
|
|
|
OPMODE_NODRIVING << OPMODE_SHIFT |
|
|
|
|
XCVRSELECT_FSTRANSC << XCVRSELECT_SHIFT |
|
|
|
|
1 << TERMSEL_FULLSPEED_SHIFT |
|
|
|
|
1 << SUSPENDN_SHIFT);
|
|
|
|
rk_clrsetreg(&grf->uoc0_con[0],
|
|
|
|
BYPASSSEL_MASK | BYPASSDMEN_MASK,
|
|
|
|
1 << BYPASSSEL_SHIFT | 1 << BYPASSDMEN_SHIFT);
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|