mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-08-10 09:17:00 +02:00
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>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
|
|
*
|
|
* Derived from linux/arch/mips/bcm63xx/reset.c:
|
|
* Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <reset-uclass.h>
|
|
#include <asm/io.h>
|
|
#include <linux/bitops.h>
|
|
#include <linux/delay.h>
|
|
|
|
#define MAX_RESETS 32
|
|
|
|
struct bcm6345_reset_priv {
|
|
void __iomem *regs;
|
|
};
|
|
|
|
static int bcm6345_reset_assert(struct reset_ctl *rst)
|
|
{
|
|
struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
|
|
|
|
clrbits_be32(priv->regs, BIT(rst->id));
|
|
mdelay(20);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm6345_reset_deassert(struct reset_ctl *rst)
|
|
{
|
|
struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
|
|
|
|
setbits_be32(priv->regs, BIT(rst->id));
|
|
mdelay(20);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bcm6345_reset_request(struct reset_ctl *rst)
|
|
{
|
|
if (rst->id >= MAX_RESETS)
|
|
return -EINVAL;
|
|
|
|
return bcm6345_reset_assert(rst);
|
|
}
|
|
|
|
struct reset_ops bcm6345_reset_reset_ops = {
|
|
.request = bcm6345_reset_request,
|
|
.rst_assert = bcm6345_reset_assert,
|
|
.rst_deassert = bcm6345_reset_deassert,
|
|
};
|
|
|
|
static const struct udevice_id bcm6345_reset_ids[] = {
|
|
{ .compatible = "brcm,bcm6345-reset" },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static int bcm6345_reset_probe(struct udevice *dev)
|
|
{
|
|
struct bcm6345_reset_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->regs = dev_remap_addr(dev);
|
|
if (!priv->regs)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(bcm6345_reset) = {
|
|
.name = "bcm6345-reset",
|
|
.id = UCLASS_RESET,
|
|
.of_match = bcm6345_reset_ids,
|
|
.ops = &bcm6345_reset_reset_ops,
|
|
.probe = bcm6345_reset_probe,
|
|
.priv_auto = sizeof(struct bcm6345_reset_priv),
|
|
};
|