i2c: xlp9xx: Driver for Netlogic XLP9XX/5XX I2C controller

Add an I2C bus driver i2c-xlp9xx.c to support the I2C block in the
XLP9xx/XLP5xx MIPS SoC. Update Kconfig and Makefile to add the
CONFIG_I2C_XLP9XX option.

Signed-off-by: Subhendu Sekhar Behera <sbehera@broadcom.com>
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Reviewed-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/Documentation/devicetree/bindings/i2c/i2c-xlp9xx.txt b/Documentation/devicetree/bindings/i2c/i2c-xlp9xx.txt
new file mode 100644 (file)
index 0000000..f818ef5
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-xlp9xx.txt
@@ -0,0 +1,22 @@
+Device tree configuration for the I2C controller on the XLP9xx/5xx SoC
+
+Required properties:
+- compatible      : should be "netlogic,xlp980-i2c"
+- reg             : bus address start and address range size of device
+- interrupts      : interrupt number
+
+Optional properties:
+- clock-frequency : frequency of bus clock in Hz
+                    Defaults to 100 KHz when the property is not specified
+
+Example:
+
+i2c0: i2c@113100 {
+       compatible = "netlogic,xlp980-i2c";
+       #address-cells = <1>;
+       #size-cells = <0>;
+       reg = <0 0x113100 0x100>;
+       clock-frequency = <400000>;
+       interrupts = <30>;
+       interrupt-parent = <&pic>;
+};

diff --cc drivers/i2c/busses/Kconfig
Simple merge

diff --cc drivers/i2c/busses/Makefile
Simple merge

diff --cc drivers/i2c/busses/i2c-xlp9xx.c
Simple merge