This adds support to use the USB interface on Zynq-7000 SoC.
Signed-off-by: Michael Graichen <michael.graic...@hotmail.com>
Signed-off-by: Johannes Roith <johannes@gnu-linux.rocks>
---
drivers/usb/host/Kconfig | 8 ++++++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-zynq.c | 36 ++++++++++++++++++++++++++++++++++++
3 files changed, 45 insertions(+)
create mode 100644 drivers/usb/host/ehci-zynq.c
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index d38b4dcac4..812270f869 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -14,6 +14,14 @@ config USB_EHCI_ATMEL
select USB_OHCI_AT91
bool "Atmel EHCI driver"
+config USB_EHCI_ZYNQ
+ bool "Support for Xilinx Zynq on-chip EHCI USB controller"
+ depends on ARCH_ZYNQ
+ depends on USB_EHCI
+ select USB_ULPI
+ help
+ Enable support for Zynq on-chip EHCI USB controller
+
config USB_OHCI
bool "OHCI driver"
depends on !MMU && HAS_DMA
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index e55dff4580..cbddfbe923 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -2,6 +2,7 @@
obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
obj-$(CONFIG_USB_EHCI_OMAP) += ehci-omap.o
obj-$(CONFIG_USB_EHCI_ATMEL) += ehci-atmel.o
+obj-$(CONFIG_USB_EHCI_ZYNQ) += ehci-zynq.o
obj-$(CONFIG_USB_OHCI) += ohci-hcd.o
obj-$(CONFIG_USB_OHCI_AT91) += ohci-at91.o
obj-$(CONFIG_USB_XHCI) += xhci.o xhci-mem.o xhci-ring.o
diff --git a/drivers/usb/host/ehci-zynq.c b/drivers/usb/host/ehci-zynq.c
new file mode 100644
index 0000000000..13b551d091
--- /dev/null
+++ b/drivers/usb/host/ehci-zynq.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * USB Low level initialization(Specific to Zynq 7000)
+ */
+
+#include <common.h>
+#include <linux/usb/ulpi.h>
+
+static int zynq_ehci_probe(struct device_d *dev)
+{
+ struct resource *res;
+ void __iomem *base;
+
+ res = dev_get_resource(dev, IORESOURCE_MEM, 0);
+ if (IS_ERR(res))
+ return PTR_ERR(res);
+
+ base = IOMEM(res->start);
+
+ ulpi_setup(base + 0x170, 1);
+ add_generic_usb_ehci_device(DEVICE_ID_DYNAMIC, (unsigned int)base,
NULL);
+
+ return 0;
+}
+
+static const struct of_device_id zynq_ehci_dt_ids[] = {
+ { .compatible = "xlnx,zynq-usb-2.20a" },
+ { /* sentinel */ }
+};
+
+static struct driver_d zynq_ehci_driver = {
+ .name = "zynq-ehci",
+ .probe = zynq_ehci_probe,
+ .of_compatible = DRV_OF_COMPAT(zynq_ehci_dt_ids),
+};
+device_platform_driver(zynq_ehci_driver);
--
2.39.5
