1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-generic.c b/drivers/usb/host/xhci-generic.c
new file mode 100644
index 00000000000..355d4883176
--- /dev/null
+++ b/drivers/usb/host/xhci-generic.c
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2024 9elements GmbH
+ *
+ * GENERIC USB HOST xHCI Controller
+ */
+#include <dm.h>
+#include <fdtdec.h>
+#include <log.h>
+#include <usb.h>
+#include <asm/io.h>
+#include <dm/device_compat.h>
+#include <usb/xhci.h>
+
+struct generic_xhci_plat {
+	fdt_addr_t hcd_base;
+};
+
+/**
+ * Contains pointers to register base addresses
+ * for the usb controller.
+ */
+struct generic_xhci {
+	struct xhci_ctrl ctrl;	/* Needs to come first in this struct! */
+	struct usb_plat usb_plat;
+	struct xhci_hccr *hcd;
+};
+
+static int xhci_usb_probe(struct udevice *dev)
+{
+	struct generic_xhci_plat *plat = dev_get_plat(dev);
+	struct generic_xhci *ctx = dev_get_priv(dev);
+	struct xhci_hcor *hcor;
+	int len;
+
+	ctx->hcd = (struct xhci_hccr *)phys_to_virt(plat->hcd_base);
+	len = HC_LENGTH(xhci_readl(&ctx->hcd->cr_capbase));
+	hcor = (struct xhci_hcor *)((uintptr_t)ctx->hcd + len);
+
+	return xhci_register(dev, ctx->hcd, hcor);
+}
+
+static int xhci_usb_of_to_plat(struct udevice *dev)
+{
+	struct generic_xhci_plat *plat = dev_get_plat(dev);
+
+	/*
+	 * Get the base address for XHCI controller from the device node
+	 */
+	plat->hcd_base = dev_read_addr(dev);
+	if (plat->hcd_base == FDT_ADDR_T_NONE) {
+		dev_dbg(dev, "Can't get the XHCI register base address\n");
+		return -ENXIO;
+	}
+
+	return 0;
+}
+
+static const struct udevice_id xhci_usb_ids[] = {
+	{ .compatible = "generic-xhci" },
+	{ }
+};
+
+U_BOOT_DRIVER(usb_xhci) = {
+	.name	= "xhci_generic",
+	.id	= UCLASS_USB,
+	.of_match = xhci_usb_ids,
+	.of_to_plat = xhci_usb_of_to_plat,
+	.probe = xhci_usb_probe,
+	.remove = xhci_deregister,
+	.ops	= &xhci_usb_ops,
+	.plat_auto	= sizeof(struct generic_xhci_plat),
+	.priv_auto	= sizeof(struct generic_xhci),
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+};