The usb3-utmi registers allow to configure the internal USB PHY of the
Armada 380/385 SoCs. A small initialization is needed to be able to use
the USB3 ports.
Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-mvebu/Makefile | 2 +-
arch/arm/mach-mvebu/usb-utmi.c | 64 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 65 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-mvebu/usb-utmi.c
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index a63e43b6b451..2d98a3eeecf6 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -4,7 +4,7 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/$(src)/include \
AFLAGS_coherency_ll.o := -Wa,-march=armv7-a
obj-y += system-controller.o mvebu-soc-id.o
-obj-$(CONFIG_MACH_MVEBU_V7) += board-v7.o
+obj-$(CONFIG_MACH_MVEBU_V7) += board-v7.o usb-utmi.o
obj-$(CONFIG_MACH_DOVE) += dove.o
obj-$(CONFIG_ARCH_MVEBU) += coherency.o coherency_ll.o pmsu.o
obj-$(CONFIG_SMP) += platsmp.o headsmp.o
diff --git a/arch/arm/mach-mvebu/usb-utmi.c b/arch/arm/mach-mvebu/usb-utmi.c
new file mode 100644
index 000000000000..e91e86f85eb4
--- /dev/null
+++ b/arch/arm/mach-mvebu/usb-utmi.c
@@ -0,0 +1,64 @@
+/*
+ * USB UTMI support for Armada 38x platform.
+ *
+ * Copyright (C) 2014 Marvell
+ *
+ * Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/of_address.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#define USB_UTMI_PHY_CTRL_STATUS(i) (0x20+i*4)
+#define USB_UTMI_TX_BITSTUFF_EN BIT(1)
+#define USB_UTMI_PU_PHY BIT(5)
+#define USB_UTMI_VBUS_ON_PHY BIT(6)
+
+static struct of_device_id of_usb_utmi_table[] = {
+ { .compatible = "marvell,armada-380-usb-utmi", },
+ { /* end of list */ },
+};
+
+static int __init mvebu_usb_utmi_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_matching_node(NULL, of_usb_utmi_table);
+ if (np) {
+ void __iomem *usb_utmi_base, *utmi_base;
+
+ usb_utmi_base = of_iomap(np, 0);
+ BUG_ON(!usb_utmi_base);
+
+ utmi_base = of_iomap(np, 1);
+ BUG_ON(!utmi_base);
+
+ writel(USB_UTMI_TX_BITSTUFF_EN |
+ USB_UTMI_PU_PHY |
+ USB_UTMI_VBUS_ON_PHY,
+ usb_utmi_base + USB_UTMI_PHY_CTRL_STATUS(0));
+
+ /*
+ * Magic init... the registers and their value are not
+ * documented
+ */
+ writel(0x40605205, utmi_base);
+ writel(0x409, utmi_base + 4);
+ writel(0x1be7f6f, utmi_base + 0xc);
+
+ of_node_put(np);
+ iounmap(utmi_base);
+ iounmap(usb_utmi_base);
+ }
+
+ return 0;
+}
+postcore_initcall(mvebu_usb_utmi_init);
--
1.8.1.2
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
