Merge branch 'allwinner-sunxi' into devel

Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt

@@ -0,0 +1,60 @@
+* Allwinner A1X Pin Controller
+
+The pins controlled by sunXi pin controller are organized in banks,
+each bank has 32 pins.  Each pin has 7 multiplexing functions, with
+the first two functions being GPIO in and out. The configuration on
+the pins includes drive strength and pull-up.
+
+Required properties:
+- compatible: "allwinner,<soc>-pinctrl". Supported SoCs for now are:
+  sun5i-a13.
+- reg: Should contain the register physical address and length for the
+  pin controller.
+
+Please refer to pinctrl-bindings.txt in this directory for details of the
+common pinctrl bindings used by client devices.
+
+A pinctrl node should contain at least one subnodes representing the
+pinctrl groups available on the machine. Each subnode will list the
+pins it needs, and how they should be configured, with regard to muxer
+configuration, drive strength and pullups. If one of these options is
+not set, its actual value will be unspecified.
+
+Required subnode-properties:
+
+- allwinner,pins: List of strings containing the pin name.
+- allwinner,function: Function to mux the pins listed above to.
+
+Optional subnode-properties:
+- allwinner,drive: Integer. Represents the current sent to the pin
+    0: 10 mA
+    1: 20 mA
+    2: 30 mA
+    3: 40 mA
+- allwinner,pull: Integer.
+    0: No resistor
+    1: Pull-up resistor
+    2: Pull-down resistor
+
+Examples:
+
+pinctrl@01c20800 {
+	compatible = "allwinner,sun5i-a13-pinctrl";
+	reg = <0x01c20800 0x400>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	uart1_pins_a: uart1@0 {
+		allwinner,pins = "PE10", "PE11";
+		allwinner,function = "uart1";
+		allwinner,drive = <0>;
+		allwinner,pull = <0>;
+	};
+
+	uart1_pins_b: uart1@1 {
+		allwinner,pins = "PG3", "PG4";
+		allwinner,function = "uart1";
+		allwinner,drive = <0>;
+		allwinner,pull = <0>;
+	};
+};

arch/arm/Kconfig

@@ -1637,7 +1637,7 @@ config ARCH_NR_GPIO
 	default 355 if ARCH_U8500
 	default 264 if MACH_H4700
 	default 512 if SOC_OMAP5
-	default 288 if ARCH_VT8500
+	default 288 if ARCH_VT8500 || ARCH_SUNXI
 	default 0
 	help
 	  Maximum number of GPIOs in the system.

arch/arm/boot/dts/sun4i-a10.dtsi

@@ -16,4 +16,34 @@
 	memory {
 		reg = <0x40000000 0x80000000>;
 	};
+
+	soc {
+		pinctrl@01c20800 {
+			compatible = "allwinner,sun4i-a10-pinctrl";
+			reg = <0x01c20800 0x400>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			uart0_pins_a: uart0@0 {
+				allwinner,pins = "PB22", "PB23";
+				allwinner,function = "uart0";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			uart0_pins_b: uart0@1 {
+				allwinner,pins = "PF2", "PF4";
+				allwinner,function = "uart0";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			uart1_pins_a: uart1@0 {
+				allwinner,pins = "PA10", "PA11";
+				allwinner,function = "uart1";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+		};
+	};
 };

arch/arm/boot/dts/sun5i-a13-olinuxino.dts

@@ -24,6 +24,8 @@
 
 	soc {
 		uart1: uart@01c28400 {
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart1_pins_b>;
 			status = "okay";
 		};
 	};

arch/arm/boot/dts/sun5i-a13.dtsi

@@ -17,4 +17,27 @@
 	memory {
 		reg = <0x40000000 0x20000000>;
 	};
+
+	soc {
+		pinctrl@01c20800 {
+			compatible = "allwinner,sun5i-a13-pinctrl";
+			reg = <0x01c20800 0x400>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			uart1_pins_a: uart1@0 {
+				allwinner,pins = "PE10", "PE11";
+				allwinner,function = "uart1";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+
+			uart1_pins_b: uart1@1 {
+				allwinner,pins = "PG3", "PG4";
+				allwinner,function = "uart1";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
+		};
+	};
 };

arch/arm/mach-sunxi/Kconfig

@@ -7,3 +7,4 @@ config ARCH_SUNXI
 	select PINCTRL
 	select SPARSE_IRQ
 	select SUNXI_TIMER
+	select PINCTRL_SUNXI

drivers/pinctrl/Kconfig

@@ -174,6 +174,11 @@ config PINCTRL_SIRF
 	depends on ARCH_SIRF
 	select PINMUX
 
+config PINCTRL_SUNXI
+	bool
+	select PINMUX
+	select GENERIC_PINCONF
+
 config PINCTRL_TEGRA
 	bool
 	select PINMUX

drivers/pinctrl/Makefile

@@ -35,6 +35,7 @@ obj-$(CONFIG_PINCTRL_PXA168)	+= pinctrl-pxa168.o
 obj-$(CONFIG_PINCTRL_PXA910)	+= pinctrl-pxa910.o
 obj-$(CONFIG_PINCTRL_SINGLE)	+= pinctrl-single.o
 obj-$(CONFIG_PINCTRL_SIRF)	+= pinctrl-sirf.o
+obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sunxi.o
 obj-$(CONFIG_PINCTRL_TEGRA)	+= pinctrl-tegra.o
 obj-$(CONFIG_PINCTRL_TEGRA20)	+= pinctrl-tegra20.o
 obj-$(CONFIG_PINCTRL_TEGRA30)	+= pinctrl-tegra30.o