1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-npcm.c b/drivers/usb/host/ohci-npcm.c
new file mode 100644
index 00000000000..ffeb6bc206a
--- /dev/null
+++ b/drivers/usb/host/ohci-npcm.c
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Nuvoton Technology Corp.
+ */
+
+#include <dm.h>
+#include <generic-phy.h>
+#include <reset.h>
+#include <asm/io.h>
+#include <dm/device_compat.h>
+#include <linux/delay.h>
+#include "ohci.h"
+
+struct npcm_ohci_priv {
+	ohci_t ohci;
+	struct phy phy;
+};
+
+static int npcm_ohci_setup_phy(struct udevice *dev, struct phy *phy)
+{
+	int ret;
+
+	if (!phy)
+		return 0;
+
+	ret = generic_phy_get_by_index(dev, 0, phy);
+	if (ret) {
+		if (ret != -ENOENT) {
+			dev_err(dev, "failed to get usb phy\n");
+			return ret;
+		}
+	} else {
+		ret = generic_phy_init(phy);
+		if (ret) {
+			dev_err(dev, "failed to init usb phy\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int npcm_ohci_init(struct udevice *dev)
+{
+	struct npcm_ohci_priv *priv = dev_get_priv(dev);
+	struct reset_ctl reset;
+	int ret;
+
+	ret = reset_get_by_index(dev, 0, &reset);
+	if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
+		dev_err(dev, "failed to get reset\n");
+		return ret;
+	}
+
+	/* reset controller */
+	if (reset_valid(&reset))
+		reset_assert(&reset);
+
+	/* setup phy */
+	ret = npcm_ohci_setup_phy(dev, &priv->phy);
+	if (ret)
+		return ret;
+
+	/* release controller from reset */
+	if (reset_valid(&reset))
+		reset_deassert(&reset);
+
+	return 0;
+}
+
+static int npcm_ohci_probe(struct udevice *dev)
+{
+	struct ohci_regs *regs = dev_read_addr_ptr(dev);
+	int ret;
+
+	ret = npcm_ohci_init(dev);
+	if (ret)
+		return ret;
+
+	return ohci_register(dev, regs);
+}
+
+static int npcm_ohci_remove(struct udevice *dev)
+{
+	struct npcm_ohci_priv *priv = dev_get_priv(dev);
+
+	generic_phy_exit(&priv->phy);
+
+	return ohci_deregister(dev);
+}
+
+static const struct udevice_id npcm_ohci_ids[] = {
+	{ .compatible = "nuvoton,npcm845-ohci" },
+	{ .compatible = "nuvoton,npcm750-ohci" },
+	{ }
+};
+
+U_BOOT_DRIVER(ohci_npcm) = {
+	.name	= "ohci_npcm",
+	.id	= UCLASS_USB,
+	.of_match = npcm_ohci_ids,
+	.probe = npcm_ohci_probe,
+	.remove = npcm_ohci_remove,
+	.ops	= &ohci_usb_ops,
+	.priv_auto = sizeof(struct npcm_ohci_priv),
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+};