gpio: gemini: augment DT bindings

The DT bindings assumed that this IP block was coming from
Cortina Systems, which turns out not to be true. It is a
standard IP block from Faraday Technology and also used in the
Moxa moxart SoC.

We augment the bindings to cover all existing parts and rename
it after the IP block. This involves deleting the old Moxa
bindings that now are contained in this binding.

Cc: devicetree@vger.kernel.org
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/faraday,ftgpio010.txt b/Documentation/devicetree/bindings/gpio/faraday,ftgpio010.txt
new file mode 100644
index 000000000000..d04236558619
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/faraday,ftgpio010.txt
@@ -0,0 +1,27 @@
+Faraday Technology FTGPIO010 GPIO Controller
+
+Required properties:
+
+- compatible : Should be one of
+  "cortina,gemini-gpio", "faraday,ftgpio010"
+  "moxa,moxart-gpio", "faraday,ftgpio010"
+  "faraday,ftgpio010"
+- reg : Should contain registers location and length
+- interrupts : Should contain the interrupt line for the GPIO block
+- gpio-controller : marks this as a GPIO controller
+- #gpio-cells : Should be 2, see gpio/gpio.txt
+- interrupt-controller : marks this as an interrupt controller
+- #interrupt-cells : a standard two-cell interrupt flag, see
+  interrupt-controller/interrupts.txt
+
+Example:
+
+gpio@4d000000 {
+	compatible = "cortina,gemini-gpio", "faraday,ftgpio010";
+	reg = <0x4d000000 0x100>;
+	interrupts = <22 IRQ_TYPE_LEVEL_HIGH>;
+	gpio-controller;
+	#gpio-cells = <2>;
+	interrupt-controller;
+	#interrupt-cells = <2>;
+};