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_assert(struct reset_ctl *reset_ctl)
23 struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
25 setbits_32(priv->base, BIT(reset_ctl->id));
30 static int mtmips_reset_deassert(struct reset_ctl *reset_ctl)
32 struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
34 clrbits_32(priv->base, BIT(reset_ctl->id));
39 static const struct reset_ops mtmips_reset_ops = {
40 .rst_assert = mtmips_reset_assert,
41 .rst_deassert = mtmips_reset_deassert,
44 static int mtmips_reset_probe(struct udevice *dev)
49 static int mtmips_reset_of_to_plat(struct udevice *dev)
51 struct mtmips_reset_priv *priv = dev_get_priv(dev);
53 priv->base = (void __iomem *)dev_remap_addr_index(dev, 0);
60 static const struct udevice_id mtmips_reset_ids[] = {
61 { .compatible = "mediatek,mtmips-reset" },
65 U_BOOT_DRIVER(mtmips_reset) = {
66 .name = "mtmips-reset",
68 .of_match = mtmips_reset_ids,
69 .of_to_plat = mtmips_reset_of_to_plat,
70 .probe = mtmips_reset_probe,
71 .priv_auto = sizeof(struct mtmips_reset_priv),
72 .ops = &mtmips_reset_ops,
73 .flags = DM_FLAG_PRE_RELOC,