2 * Based on the iomux-v3.c from Linux kernel:
3 * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
4 * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
7 * Copyright (C) 2004-2011 Freescale Semiconductor, Inc.
9 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/arch/imx-regs.h>
14 #include <asm/imx-common/iomux-v3.h>
16 static void *base = (void *)IOMUXC_BASE_ADDR;
19 * configures a single pad in the iomuxer
21 void imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
23 u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
24 u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
26 (pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
28 (pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
30 (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
31 u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
34 __raw_writel(mux_mode, base + mux_ctrl_ofs);
37 __raw_writel(sel_input, base + sel_input_ofs);
39 #ifdef CONFIG_IOMUX_SHARE_CONF_REG
40 if (pad & PAD_CTRL_VALID)
41 __raw_writel((mux_mode << PAD_MUX_MODE_SHIFT) | pad_ctrl,
44 if ((pad & PAD_CTRL_VALID) && pad_ctrl_ofs)
45 __raw_writel(pad_ctrl, base + pad_ctrl_ofs);
49 void imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list,
52 iomux_v3_cfg_t const *p = pad_list;
55 for (i = 0; i < count; i++) {
57 u32 mux_ctrl_ofs = (*p & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
58 u32 mux_mode = (*p & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
60 (*p & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
62 (*p & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
64 (*p & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
65 u32 pad_ctrl = (*p & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
67 printf("PAD[%2d]=%016llx mux[%03x]=%02x pad[%03x]=%05x%c inp[%03x]=%d\n",
68 i, *p, mux_ctrl_ofs, mux_mode, pad_ctrl_ofs, pad_ctrl,
69 *p & PAD_CTRL_VALID ? ' ' : '!', sel_input_ofs, sel_input);
71 imx_iomux_v3_setup_pad(*p++);