diff options
| author | Peng Fan | 2018-10-18 14:28:25 +0200 |
|---|---|---|
| committer | Stefano Babic | 2018-10-22 12:59:01 +0200 |
| commit | abeebc19dbe0445793dab45d48dc60541e58fe6a (patch) | |
| tree | 2767e1151e630bf9d76959aa11fbcf72c1d59041 /arch/arm/include | |
| parent | 2fdb1a1df925f885afc677e61755125844a9b7ef (diff) | |
imx8: add iomux configuration api
Add iomux configuration api.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch/arm/include')
| -rw-r--r-- | arch/arm/include/asm/arch-imx8/iomux.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-imx8/iomux.h b/arch/arm/include/asm/arch-imx8/iomux.h new file mode 100644 index 00000000000..bedd01bfd85 --- /dev/null +++ b/arch/arm/include/asm/arch-imx8/iomux.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2018 NXP + */ + +#ifndef __ASM_ARCH_IMX8_IOMUX_H__ +#define __ASM_ARCH_IMX8_IOMUX_H__ + +/* + * We use 64bits value for iomux settings. + * High 32bits are used for padring register value, + * low 16bits are used for pin index. + */ +typedef u64 iomux_cfg_t; + +#define PADRING_IFMUX_EN_SHIFT 31 +#define PADRING_IFMUX_EN_MASK BIT(31) +#define PADRING_GP_EN_SHIFT 30 +#define PADRING_GP_EN_MASK BIT(30) +#define PADRING_IFMUX_SHIFT 27 +#define PADRING_IFMUX_MASK GENMASK(29, 27) +#define PADRING_CONFIG_SHIFT 25 +#define PADRING_LPCONFIG_SHIFT 23 +#define PADRING_PULL_SHIFT 5 +#define PADRING_DSE_SHIFT 0 + +#define MUX_PAD_CTRL_SHIFT 32 +#define MUX_PAD_CTRL_MASK ((iomux_cfg_t)0xFFFFFFFF << MUX_PAD_CTRL_SHIFT) +#define MUX_PAD_CTRL(x) ((iomux_cfg_t)(x) << MUX_PAD_CTRL_SHIFT) +#define MUX_MODE_SHIFT (PADRING_IFMUX_SHIFT + MUX_PAD_CTRL_SHIFT) +#define MUX_MODE_MASK ((iomux_cfg_t)0x7 << MUX_MODE_SHIFT) +#define PIN_ID_MASK ((iomux_cfg_t)0xFFFF) + +/* Valid mux alt0 to alt7 */ +#define MUX_MODE_ALT(x) (((iomux_cfg_t)(x) << MUX_MODE_SHIFT) & \ + MUX_MODE_MASK) + +void imx8_iomux_setup_pad(iomux_cfg_t pad); +void imx8_iomux_setup_multiple_pads(iomux_cfg_t const *pad_list, u32 count); +#endif /* __ASM_ARCH_IMX8_IOMUX_H__ */ |