Add mt7621 6.1 support

6.1/target/linux/ramips/patches-6.1/801-DT-Add-documentation-for-gpio-ralink.patch

@@ -0,0 +1,59 @@
+From d410e5478c622c01fcf31427533df5f433df9146 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Sun, 28 Jul 2013 19:45:30 +0200
+Subject: [PATCH 26/53] DT: Add documentation for gpio-ralink
+
+Describe gpio-ralink binding.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Cc: linux-mips@linux-mips.org
+Cc: devicetree@vger.kernel.org
+Cc: linux-gpio@vger.kernel.org
+---
+ .../devicetree/bindings/gpio/gpio-ralink.txt       |   40 ++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/gpio/gpio-ralink.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/gpio/gpio-ralink.txt
+@@ -0,0 +1,40 @@
++Ralink SoC GPIO controller bindings
++
++Required properties:
++- compatible:
++  - "ralink,rt2880-gpio" for Ralink controllers
++- #gpio-cells : Should be two.
++  - first cell is the pin number
++  - second cell is used to specify optional parameters (unused)
++- gpio-controller : Marks the device node as a GPIO controller
++- reg : Physical base address and length of the controller's registers
++- interrupt-parent: phandle to the INTC device node
++- interrupts : Specify the INTC interrupt number
++- ngpios : Specify the number of GPIOs
++- ralink,register-map : The register layout depends on the GPIO bank and actual
++		SoC type. Register offsets need to be in this order.
++		[ INT, EDGE, RENA, FENA, DATA, DIR, POL, SET, RESET, TOGGLE ]
++
++Optional properties:
++- ralink,gpio-base : Specify the GPIO chips base number
++
++Example:
++
++	gpio0: gpio@600 {
++		compatible = "ralink,rt5350-gpio", "ralink,rt2880-gpio";
++
++		#gpio-cells = <2>;
++		gpio-controller;
++
++		reg = <0x600 0x34>;
++
++		interrupt-parent = <&intc>;
++		interrupts = <6>;
++
++		ngpios = <24>;
++		ralink,gpio-base = <0>;
++		ralink,register-map = [ 00 04 08 0c
++				20 24 28 2c
++				30 34 ];
++
++	};