1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
5 * Derived from linux/arch/mips/bcm63xx/reset.c:
6 * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
14 #include <reset-uclass.h>
16 #include <linux/bitops.h>
17 #include <linux/delay.h>
21 struct bcm6345_reset_priv {
25 static int bcm6345_reset_assert(struct reset_ctl *rst)
27 struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
29 clrbits_be32(priv->regs, BIT(rst->id));
35 static int bcm6345_reset_deassert(struct reset_ctl *rst)
37 struct bcm6345_reset_priv *priv = dev_get_priv(rst->dev);
39 setbits_be32(priv->regs, BIT(rst->id));
45 static int bcm6345_reset_free(struct reset_ctl *rst)
50 static int bcm6345_reset_request(struct reset_ctl *rst)
52 if (rst->id >= MAX_RESETS)
55 return bcm6345_reset_assert(rst);
58 struct reset_ops bcm6345_reset_reset_ops = {
59 .rfree = bcm6345_reset_free,
60 .request = bcm6345_reset_request,
61 .rst_assert = bcm6345_reset_assert,
62 .rst_deassert = bcm6345_reset_deassert,
65 static const struct udevice_id bcm6345_reset_ids[] = {
66 { .compatible = "brcm,bcm6345-reset" },
70 static int bcm6345_reset_probe(struct udevice *dev)
72 struct bcm6345_reset_priv *priv = dev_get_priv(dev);
74 priv->regs = dev_remap_addr(dev);
81 U_BOOT_DRIVER(bcm6345_reset) = {
82 .name = "bcm6345-reset",
84 .of_match = bcm6345_reset_ids,
85 .ops = &bcm6345_reset_reset_ops,
86 .probe = bcm6345_reset_probe,
87 .priv_auto_alloc_size = sizeof(struct bcm6345_reset_priv),