GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2014, Xilinx, Inc
+ *
+ * USB Low level initialization(Specific to zynq)
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <usb.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/io.h>
+#include <usb/ehci-ci.h>
+#include <usb/ulpi.h>
+
+#include "ehci.h"
+
+struct zynq_ehci_priv {
+	struct ehci_ctrl ehcictrl;
+	struct usb_ehci *ehci;
+};
+
+static int ehci_zynq_ofdata_to_platdata(struct udevice *dev)
+{
+	struct zynq_ehci_priv *priv = dev_get_priv(dev);
+
+	priv->ehci = (struct usb_ehci *)devfdt_get_addr_ptr(dev);
+	if (!priv->ehci)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ehci_zynq_probe(struct udevice *dev)
+{
+	struct usb_platdata *plat = dev_get_platdata(dev);
+	struct zynq_ehci_priv *priv = dev_get_priv(dev);
+	struct ehci_hccr *hccr;
+	struct ehci_hcor *hcor;
+	struct ulpi_viewport ulpi_vp;
+	/* Used for writing the ULPI data address */
+	struct ulpi_regs *ulpi = (struct ulpi_regs *)0;
+	int ret;
+
+	hccr = (struct ehci_hccr *)((uint32_t)&priv->ehci->caplength);
+	hcor = (struct ehci_hcor *)((uint32_t) hccr +
+			HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
+
+	ulpi_vp.viewport_addr = (u32)&priv->ehci->ulpi_viewpoint;
+	ulpi_vp.port_num = 0;
+
+	ret = ulpi_init(&ulpi_vp);
+	if (ret) {
+		puts("zynq ULPI viewport init failed\n");
+		return -1;
+	}
+
+	/* ULPI set flags */
+	ulpi_write(&ulpi_vp, &ulpi->otg_ctrl,
+		   ULPI_OTG_DP_PULLDOWN | ULPI_OTG_DM_PULLDOWN |
+		   ULPI_OTG_EXTVBUSIND);
+	ulpi_write(&ulpi_vp, &ulpi->function_ctrl,
+		   ULPI_FC_FULL_SPEED | ULPI_FC_OPMODE_NORMAL |
+		   ULPI_FC_SUSPENDM);
+	ulpi_write(&ulpi_vp, &ulpi->iface_ctrl, 0);
+
+	/* Set VBus */
+	ulpi_write(&ulpi_vp, &ulpi->otg_ctrl_set,
+		   ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
+
+	return ehci_register(dev, hccr, hcor, NULL, 0, plat->init_type);
+}
+
+static const struct udevice_id ehci_zynq_ids[] = {
+	{ .compatible = "xlnx,zynq-usb-2.20a" },
+	{ }
+};
+
+U_BOOT_DRIVER(ehci_zynq) = {
+	.name	= "ehci_zynq",
+	.id	= UCLASS_USB,
+	.of_match = ehci_zynq_ids,
+	.ofdata_to_platdata = ehci_zynq_ofdata_to_platdata,
+	.probe = ehci_zynq_probe,
+	.remove = ehci_deregister,
+	.ops	= &ehci_usb_ops,
+	.platdata_auto_alloc_size = sizeof(struct usb_platdata),
+	.priv_auto_alloc_size = sizeof(struct zynq_ehci_priv),
+	.flags	= DM_FLAG_ALLOC_PRIV_DMA,
+};