u-boot/arch/arm/mach-imx/imx8/iomux.c
Peng Fan abeebc19db imx8: add iomux configuration api
Add iomux configuration api.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
2018-10-22 12:59:01 +02:00

43 lines
894 B
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2018 NXP
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/iomux.h>
#include <asm/arch/sci/sci.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* configures a single pad in the iomuxer
*/
void imx8_iomux_setup_pad(iomux_cfg_t pad)
{
sc_pad_t pin_id = pad & PIN_ID_MASK;
int ret;
u32 val = (u32)((pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT);
val |= PADRING_IFMUX_EN_MASK;
val |= PADRING_GP_EN_MASK;
ret = sc_pad_set(-1, pin_id, val);
if (ret)
printf("sc_pad_set failed!, pin: %u, val: 0x%x\n", pin_id, val);
debug("iomux: pin %d, val = 0x%x\n", pin_id, val);
}
/* configures a list of pads within declared with IOMUX_PADS macro */
void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count)
{
iomux_cfg_t const *p = pad_list;
int i;
for (i = 0; i < count; i++) {
imx8_iomux_setup_pad(*p);
p++;
}
}