1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright 2020-2021 NXP
4 */
5
6#include <common.h>
7#include <asm/io.h>
8#include <asm/arch/imx-regs.h>
9#include <asm/arch/iomux.h>
10
11static void *base = (void *)IOMUXC_BASE_ADDR;
12static void *base_mports = (void *)(0x280A1000);
13
14/*
15 * configures a single pad in the iomuxer
16 */
17void imx8ulp_iomux_setup_pad(iomux_cfg_t pad)
18{
19	u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
20	u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
21	u32 sel_input_ofs =
22		(pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
23	u32 sel_input =
24		(pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
25	u32 pad_ctrl_ofs = mux_ctrl_ofs;
26	u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
27
28	if (mux_mode & IOMUX_CONFIG_MPORTS) {
29		mux_mode &= ~IOMUX_CONFIG_MPORTS;
30		base = base_mports;
31	} else {
32		base = (void *)IOMUXC_BASE_ADDR;
33	}
34
35	__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
36		     IOMUXC_PCR_MUX_ALT_MASK), base + mux_ctrl_ofs);
37
38	if (sel_input_ofs)
39		__raw_writel((sel_input << IOMUXC_PSMI_IMUX_ALT_SHIFT), base + sel_input_ofs);
40
41	if (!(pad_ctrl & NO_PAD_CTRL))
42		__raw_writel(((mux_mode << IOMUXC_PCR_MUX_ALT_SHIFT) &
43			     IOMUXC_PCR_MUX_ALT_MASK) |
44			     (pad_ctrl & (~IOMUXC_PCR_MUX_ALT_MASK)),
45			     base + pad_ctrl_ofs);
46}
47
48/* configures a list of pads within declared with IOMUX_PADS macro */
49void imx8ulp_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count)
50{
51	iomux_cfg_t const *p = pad_list;
52	int i;
53
54	for (i = 0; i < count; i++) {
55		imx8ulp_iomux_setup_pad(*p);
56		p++;
57	}
58}
59