Merge branch 'at91-3.4-cleanup2-DT2' of git://github.com/at91linux/linux-at91 into next/dt

* 'at91-3.4-cleanup2-DT2' of git://github.com/at91linux/linux-at91: (23 commits)
  ARM: at91: dt: enable usb ehci for sam9g45 and sam9x5
  ARM: at91: usb ehci add dt support
  ARM: at91: dt: enable usb ohci for sam9g20, sam9g45 amd sam9x5
  ARM: at91: usb ohci add dt support
  ARM: at91: add Shutdown Controller (SHDWC) DT support
  ARM: at91: add ram controller DT support
  ARM: at91: add RSTC (Reset Controller) dt support
  ARM: at91: always enable sam9 restart
  ARM: at91: add pmc DT support
  ARM: at91/dt: add specific DT soc init
  ARM: at91/dt: add Calao DAB-MMX daugther board support for USB-A9G20
  ARM: at91: sam9x5 add i2c DT support
  ARM: at91: sam9g45 add i2c DT support
  ARM: at91: usb_a9g20 add DT i2c support
  ARM: at91: sam9g20 add i2c DT support
  i2c/gpio: add DT support
  ARM: at91: sam9x5 add nand support
  atmel/nand: add DT support
  of/mtd/nand: add generic bindings and helpers
  of: introduce helper to manage boolean
  ...

1 files changed, 32 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/gpio_i2c.txt b/Documentation/devicetree/bindings/gpio/gpio_i2c.txt
new file mode 100644
index 000000000000..4f8ec947c6bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio_i2c.txt
@@ -0,0 +1,32 @@
+Device-Tree bindings for i2c gpio driver
+
+Required properties:
+        - compatible = "i2c-gpio";
+        - gpios: sda and scl gpio
+
+
+Optional properties:
+        - i2c-gpio,sda-open-drain: sda as open drain
+        - i2c-gpio,scl-open-drain: scl as open drain
+        - i2c-gpio,scl-output-only: scl as output only
+        - i2c-gpio,delay-us: delay between GPIO operations (may depend on each platform)
+        - i2c-gpio,timeout-ms: timeout to get data
+
+Example nodes:
+
+i2c@0 {
+        compatible = "i2c-gpio";
+        gpios = <&pioA 23 0 /* sda */
+                 &pioA 24 0 /* scl */
+                >;
+        i2c-gpio,sda-open-drain;
+        i2c-gpio,scl-open-drain;
+        i2c-gpio,delay-us = <2>;        /* ~100 kHz */
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rv3029c2@56 {
+                compatible = "rv3029c2";
+                reg = <0x56>;
+        };
+};