1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2019 MediaTek Inc. All Rights Reserved.
5 * Author: Weijie Gao <weijie.gao@mediatek.com>
13 #include <reset-uclass.h>
14 #include <linux/bitops.h>
17 struct mtmips_reset_priv {
21 static int mtmips_reset_request(struct reset_ctl *reset_ctl)
26 static int mtmips_reset_free(struct reset_ctl *reset_ctl)
31 static int mtmips_reset_assert(struct reset_ctl *reset_ctl)
33 struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
35 setbits_32(priv->base, BIT(reset_ctl->id));
40 static int mtmips_reset_deassert(struct reset_ctl *reset_ctl)
42 struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
44 clrbits_32(priv->base, BIT(reset_ctl->id));
49 static const struct reset_ops mtmips_reset_ops = {
50 .request = mtmips_reset_request,
51 .rfree = mtmips_reset_free,
52 .rst_assert = mtmips_reset_assert,
53 .rst_deassert = mtmips_reset_deassert,
56 static int mtmips_reset_probe(struct udevice *dev)
61 static int mtmips_reset_ofdata_to_platdata(struct udevice *dev)
63 struct mtmips_reset_priv *priv = dev_get_priv(dev);
65 priv->base = (void __iomem *)dev_remap_addr_index(dev, 0);
72 static const struct udevice_id mtmips_reset_ids[] = {
73 { .compatible = "mediatek,mtmips-reset" },
77 U_BOOT_DRIVER(mtmips_reset) = {
78 .name = "mtmips-reset",
80 .of_match = mtmips_reset_ids,
81 .ofdata_to_platdata = mtmips_reset_ofdata_to_platdata,
82 .probe = mtmips_reset_probe,
83 .priv_auto_alloc_size = sizeof(struct mtmips_reset_priv),
84 .ops = &mtmips_reset_ops,