1 files changed, 86 insertions, 0 deletions
diff --git a/roms/u-boot/drivers/reset/reset-mtmips.c b/roms/u-boot/drivers/reset/reset-mtmips.c
new file mode 100644
index 000000000..4e71d5255
--- /dev/null
+++ b/roms/u-boot/drivers/reset/reset-mtmips.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <log.h>
+#include <malloc.h>
+#include <reset-uclass.h>
+#include <linux/bitops.h>
+#include <linux/io.h>
+
+struct mtmips_reset_priv {
+	void __iomem *base;
+};
+
+static int mtmips_reset_request(struct reset_ctl *reset_ctl)
+{
+	return 0;
+}
+
+static int mtmips_reset_free(struct reset_ctl *reset_ctl)
+{
+	return 0;
+}
+
+static int mtmips_reset_assert(struct reset_ctl *reset_ctl)
+{
+	struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
+
+	setbits_32(priv->base, BIT(reset_ctl->id));
+
+	return 0;
+}
+
+static int mtmips_reset_deassert(struct reset_ctl *reset_ctl)
+{
+	struct mtmips_reset_priv *priv = dev_get_priv(reset_ctl->dev);
+
+	clrbits_32(priv->base, BIT(reset_ctl->id));
+
+	return 0;
+}
+
+static const struct reset_ops mtmips_reset_ops = {
+	.request	= mtmips_reset_request,
+	.rfree		= mtmips_reset_free,
+	.rst_assert	= mtmips_reset_assert,
+	.rst_deassert	= mtmips_reset_deassert,
+};
+
+static int mtmips_reset_probe(struct udevice *dev)
+{
+	return 0;
+}
+
+static int mtmips_reset_of_to_plat(struct udevice *dev)
+{
+	struct mtmips_reset_priv *priv = dev_get_priv(dev);
+
+	priv->base = (void __iomem *)dev_remap_addr_index(dev, 0);
+	if (!priv->base)
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct udevice_id mtmips_reset_ids[] = {
+	{ .compatible = "mediatek,mtmips-reset" },
+	{ }
+};
+
+U_BOOT_DRIVER(mtmips_reset) = {
+	.name = "mtmips-reset",
+	.id = UCLASS_RESET,
+	.of_match = mtmips_reset_ids,
+	.of_to_plat = mtmips_reset_of_to_plat,
+	.probe = mtmips_reset_probe,
+	.priv_auto	= sizeof(struct mtmips_reset_priv),
+	.ops = &mtmips_reset_ops,
+	.flags = DM_FLAG_PRE_RELOC,
+};