colin/u-boot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

imx8: add iomux configuration api

Browse Source 
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>
This commit is contained in:
Peng Fan
2018-10-18 14:28:25 +02:00
committed by Stefano Babic
parent 2fdb1a1df9
commit abeebc19db
3 changed files with 84 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
arch/arm/include/asm/arch-imx8/iomux.h Normal file
View File

@@ -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__ */