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https://github.com/AsahiLinux/u-boot
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caf7092294
Some chips provide their sysreset function in reset controller, which is normally a bit written to 1 to perform the sysreset. This patch adds a new sysreset driver to take advantage of it. Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
48 lines
1 KiB
C
48 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 MediaTek Inc.
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*
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* Author: Weijie Gao <weijie.gao@mediatek.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <sysreset.h>
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#include <reset.h>
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struct resetctl_reboot_priv {
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struct reset_ctl_bulk resets;
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};
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static int resetctl_reboot_request(struct udevice *dev, enum sysreset_t type)
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{
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struct resetctl_reboot_priv *priv = dev_get_priv(dev);
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return reset_assert_bulk(&priv->resets);
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}
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static struct sysreset_ops resetctl_reboot_ops = {
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.request = resetctl_reboot_request,
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};
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int resetctl_reboot_probe(struct udevice *dev)
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{
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struct resetctl_reboot_priv *priv = dev_get_priv(dev);
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return reset_get_bulk(dev, &priv->resets);
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}
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static const struct udevice_id resetctl_reboot_ids[] = {
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{ .compatible = "resetctl-reboot" },
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{ }
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};
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U_BOOT_DRIVER(resetctl_reboot) = {
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.id = UCLASS_SYSRESET,
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.name = "resetctl_reboot",
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.of_match = resetctl_reboot_ids,
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.ops = &resetctl_reboot_ops,
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.priv_auto_alloc_size = sizeof(struct resetctl_reboot_priv),
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.probe = resetctl_reboot_probe,
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};
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