iomux.h 1.3 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright 2018 NXP
  4. */
  5. #ifndef __ASM_ARCH_IMX8_IOMUX_H__
  6. #define __ASM_ARCH_IMX8_IOMUX_H__
  7. #ifndef __ASSEMBLY__
  8. #include <linux/bitops.h>
  9. #endif
  10. /*
  11. * We use 64bits value for iomux settings.
  12. * High 32bits are used for padring register value,
  13. * low 16bits are used for pin index.
  14. */
  15. typedef u64 iomux_cfg_t;
  16. #define PADRING_IFMUX_EN_SHIFT 31
  17. #define PADRING_IFMUX_EN_MASK BIT(31)
  18. #define PADRING_GP_EN_SHIFT 30
  19. #define PADRING_GP_EN_MASK BIT(30)
  20. #define PADRING_IFMUX_SHIFT 27
  21. #define PADRING_IFMUX_MASK GENMASK(29, 27)
  22. #define PADRING_CONFIG_SHIFT 25
  23. #define PADRING_LPCONFIG_SHIFT 23
  24. #define PADRING_PULL_SHIFT 5
  25. #define PADRING_DSE_SHIFT 0
  26. #define MUX_PAD_CTRL_SHIFT 32
  27. #define MUX_PAD_CTRL_MASK ((iomux_cfg_t)0xFFFFFFFF << MUX_PAD_CTRL_SHIFT)
  28. #define MUX_PAD_CTRL(x) ((iomux_cfg_t)(x) << MUX_PAD_CTRL_SHIFT)
  29. #define MUX_MODE_SHIFT (PADRING_IFMUX_SHIFT + MUX_PAD_CTRL_SHIFT)
  30. #define MUX_MODE_MASK ((iomux_cfg_t)0x7 << MUX_MODE_SHIFT)
  31. #define PIN_ID_MASK ((iomux_cfg_t)0xFFFF)
  32. /* Valid mux alt0 to alt7 */
  33. #define MUX_MODE_ALT(x) (((iomux_cfg_t)(x) << MUX_MODE_SHIFT) & \
  34. MUX_MODE_MASK)
  35. void imx8_iomux_setup_pad(iomux_cfg_t pad);
  36. void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count);
  37. #endif /* __ASM_ARCH_IMX8_IOMUX_H__ */