Add support for the USB clock controls found on the A80.

Signed-off-by: Chen-Yu Tsai <redacted>
---
 .../devicetree/bindings/clock/sun9i-usb.txt        |  24 ++++
 drivers/clk/sunxi-ng/Makefile                      |   1 +
 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c           | 144 +++++++++++++++++++++
 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h           |  25 ++++
 include/dt-bindings/clock/sun9i-a80-usb.h          |  59 +++++++++
 include/dt-bindings/reset/sun9i-a80-usb.h          |  56 ++++++++
 6 files changed, 309 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/sun9i-usb.txt
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c
 create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h
 create mode 100644 include/dt-bindings/clock/sun9i-a80-usb.h
 create mode 100644 include/dt-bindings/reset/sun9i-a80-usb.h

diff --git a/Documentation/devicetree/bindings/clock/sun9i-usb.txt b/Documentation/devicetree/bindings/clock/sun9i-usb.txt
new file mode 100644
index 000000000000..c2d38626eaaa
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/sun9i-usb.txt

@@ -0,0 +1,24 @@
+Allwinner A80 USB Clock Control Binding
+------------------------------------
+
+Required properties :
+- compatible: must contain one of the following compatibles:
+		- "allwinner,sun9i-a80-usb-clocks"
+
+- reg: Must contain the registers base address and length
+- clocks: phandle to the clocks feeding the USB subsystem. Two are needed:
+  - "bus": the bus clock for the whole USB subsystem
+  - "hosc": the high frequency oscillator (usually at 24MHz)
+- clock-names: Must contain the clock names described just above
+- #clock-cells : must contain 1
+- #reset-cells : must contain 1
+
+Example:
+usb_clocks: clock at 00a08000 {
+	compatible = "allwinner,sun9i-a80-usb-clks";
+	reg = <0x00a08000 0x8>;
+	clocks = <&ccu CLK_BUS_USB>, <&osc24M>;
+	clock-names = "bus", "hosc";
+	#clock-cells = <1>;
+	#reset-cells = <1>;
+};

diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
index 126bb7c1c3f7..8f37ef7fb67d 100644
--- a/drivers/clk/sunxi-ng/Makefile
+++ b/drivers/clk/sunxi-ng/Makefile

@@ -26,3 +26,4 @@ obj-$(CONFIG_SUN8I_A33_CCU)	+= ccu-sun8i-a33.o
 obj-$(CONFIG_SUN8I_H3_CCU)	+= ccu-sun8i-h3.o
 obj-$(CONFIG_SUN8I_V3S_CCU)	+= ccu-sun8i-v3s.o
 obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80.o
+obj-$(CONFIG_SUN9I_A80_CCU)	+= ccu-sun9i-a80-usb.o

diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c
new file mode 100644
index 000000000000..1d76f24f7df3
--- /dev/null
+++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c

@@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+
+#include "ccu_common.h"
+#include "ccu_gate.h"
+#include "ccu_reset.h"
+
+#include "ccu-sun9i-a80-usb.h"
+
+static SUNXI_CCU_GATE(bus_hci0_clk, "bus-hci0", "bus-usb", 0x0, BIT(1), 0);
+static SUNXI_CCU_GATE(usb_ohci0_clk, "usb-ohci0", "osc24M", 0x0, BIT(2), 0);
+static SUNXI_CCU_GATE(bus_hci1_clk, "bus-hci1", "bus-usb", 0x0, BIT(3), 0);
+static SUNXI_CCU_GATE(bus_hci2_clk, "bus-hci2", "bus-usb", 0x0, BIT(5), 0);
+static SUNXI_CCU_GATE(usb_ohci2_clk, "usb-ohci2", "osc24M", 0x0, BIT(6), 0);