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