mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-10-25 22:41:21 +02:00
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2020-2021 NXP
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/imx-regs.h>
|
|
#include <asm/arch/iomux.h>
|
|
|
|
static void *base = (void *)IOMUXC_BASE_ADDR;
|
|
static void *base_mports = (void *)(0x280A1000);
|
|
|
|
/*
|
|
* configures a single pad in the iomuxer
|
|
*/
|
|
void imx8ulp_iomux_setup_pad(iomux_cfg_t pad)
|
|
{
|
|
u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
|
|
u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
|
|
u32 sel_input_ofs =
|
|
(pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
|
|
u32 sel_input =
|
|
(pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
|
|
u32 pad_ctrl_ofs = mux_ctrl_ofs;
|
|
u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
|
|
|
|
if (mux_mode & IOMUX_CONFIG_MPORTS) {
|
|
mux_mode &= ~IOMUX_CONFIG_MPORTS;
|
|
base = base_mports;
|
|
} else {
|
|
base = (void *)IOMUXC_BASE_ADDR;
|
|
}
|
|
|
|
__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
|
|
IOMUXC_PCR_MUX_ALT_MASK), base + mux_ctrl_ofs);
|
|
|
|
if (sel_input_ofs)
|
|
__raw_writel((sel_input << IOMUXC_PSMI_IMUX_ALT_SHIFT), base + sel_input_ofs);
|
|
|
|
if (!(pad_ctrl & NO_PAD_CTRL))
|
|
__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
|
|
IOMUXC_PCR_MUX_ALT_MASK) |
|
|
(pad_ctrl & (~IOMUXC_PCR_MUX_ALT_MASK)),
|
|
base + pad_ctrl_ofs);
|
|
}
|
|
|
|
/* configures a list of pads within declared with IOMUX_PADS macro */
|
|
void imx8ulp_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++) {
|
|
imx8ulp_iomux_setup_pad(*p);
|
|
p++;
|
|
}
|
|
}
|