mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-17 18:34:42 +00:00
d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2004-2006,2010 Freescale Semiconductor, Inc. All Rights Reserved.
|
|
* Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
|
|
* Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
|
|
* <armlinux@phytec.de>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <linux/errno.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/iomux.h>
|
|
#include <asm/arch/imx-regs.h>
|
|
|
|
#if defined(CONFIG_MX23)
|
|
#define DRIVE_OFFSET 0x200
|
|
#define PULL_OFFSET 0x400
|
|
#elif defined(CONFIG_MX28)
|
|
#define DRIVE_OFFSET 0x300
|
|
#define PULL_OFFSET 0x600
|
|
#else
|
|
#error "Please select CONFIG_MX23 or CONFIG_MX28"
|
|
#endif
|
|
|
|
/*
|
|
* configures a single pad in the iomuxer
|
|
*/
|
|
int mxs_iomux_setup_pad(iomux_cfg_t pad)
|
|
{
|
|
u32 reg, ofs, bp, bm;
|
|
void *iomux_base = (void *)MXS_PINCTRL_BASE;
|
|
struct mxs_register_32 *mxs_reg;
|
|
|
|
/* muxsel */
|
|
ofs = 0x100;
|
|
ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10;
|
|
bp = PAD_PIN(pad) % 16 * 2;
|
|
bm = 0x3 << bp;
|
|
reg = readl(iomux_base + ofs);
|
|
reg &= ~bm;
|
|
reg |= PAD_MUXSEL(pad) << bp;
|
|
writel(reg, iomux_base + ofs);
|
|
|
|
/* drive */
|
|
ofs = DRIVE_OFFSET;
|
|
ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10;
|
|
/* mA */
|
|
if (PAD_MA_VALID(pad)) {
|
|
bp = PAD_PIN(pad) % 8 * 4;
|
|
bm = 0x3 << bp;
|
|
reg = readl(iomux_base + ofs);
|
|
reg &= ~bm;
|
|
reg |= PAD_MA(pad) << bp;
|
|
writel(reg, iomux_base + ofs);
|
|
}
|
|
/* vol */
|
|
if (PAD_VOL_VALID(pad)) {
|
|
bp = PAD_PIN(pad) % 8 * 4 + 2;
|
|
mxs_reg = (struct mxs_register_32 *)(iomux_base + ofs);
|
|
if (PAD_VOL(pad))
|
|
writel(1 << bp, &mxs_reg->reg_set);
|
|
else
|
|
writel(1 << bp, &mxs_reg->reg_clr);
|
|
}
|
|
|
|
/* pull */
|
|
if (PAD_PULL_VALID(pad)) {
|
|
ofs = PULL_OFFSET;
|
|
ofs += PAD_BANK(pad) * 0x10;
|
|
bp = PAD_PIN(pad);
|
|
mxs_reg = (struct mxs_register_32 *)(iomux_base + ofs);
|
|
if (PAD_PULL(pad))
|
|
writel(1 << bp, &mxs_reg->reg_set);
|
|
else
|
|
writel(1 << bp, &mxs_reg->reg_clr);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mxs_iomux_setup_multiple_pads(const iomux_cfg_t *pad_list, unsigned count)
|
|
{
|
|
const iomux_cfg_t *p = pad_list;
|
|
int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < count; i++) {
|
|
ret = mxs_iomux_setup_pad(*p);
|
|
if (ret)
|
|
return ret;
|
|
p++;
|
|
}
|
|
|
|
return 0;
|
|
}
|