LXR uboot/arch/arm/mach-imx/imx8/iomux.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Copyright 2018 NXP
   4 */
   5
   6#include <common.h>
   7#include <asm/io.h>
   8#include <asm/arch/iomux.h>
   9#include <asm/arch/sci/sci.h>
  10
  11DECLARE_GLOBAL_DATA_PTR;
  12
  13/*
  14 * configures a single pad in the iomuxer
  15 */
  16void imx8_iomux_setup_pad(iomux_cfg_t pad)
  17{
  18        sc_pad_t pin_id = pad & PIN_ID_MASK;
  19        int ret;
  20
  21        u32 val = (u32)((pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT);
  22
  23        val |= PADRING_IFMUX_EN_MASK;
  24        val |= PADRING_GP_EN_MASK;
  25
  26        ret = sc_pad_set(-1, pin_id, val);
  27        if (ret)
  28                printf("sc_pad_set failed!, pin: %u, val: 0x%x\n", pin_id, val);
  29
  30        debug("iomux: pin %d, val = 0x%x\n", pin_id, val);
  31}
  32
  33/* configures a list of pads within declared with IOMUX_PADS macro */
  34void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count)
  35{
  36        iomux_cfg_t const *p = pad_list;
  37        int i;
  38
  39        for (i = 0; i < count; i++) {
  40                imx8_iomux_setup_pad(*p);
  41                p++;
  42        }
  43}
  44