Commit 827cbe71 authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge branch 'next/pinctrl-samsung' of... 

Merge branch 'next/pinctrl-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers

From Kukjin Kim:

This branch is for supporting pinctrl for Samsung EXYNOS. Now this can
support EXYNOS4210 and other EXYNOS SoCs such as EXYNOS4X12 will be
supported next time.

* 'next/pinctrl-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Enable pinctrl driver support for EXYNOS4 device tree enabled platform
  ARM: dts: Add pinctrl node entries for SAMSUNG EXYNOS4210 SoC
  ARM: EXYNOS: skip wakeup interrupt setup if pinctrl driver is used
  gpio: exynos4: skip gpiolib registration if pinctrl driver is used
  pinctrl: add exynos4210 specific extensions for samsung pinctrl driver
  pinctrl: add samsung pinctrl and gpiolib driver
parents 1ef3f756 011527b4

Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt

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Samsung GPIO and Pin Mux/Config controller



Samsung's ARM based SoC's integrates a GPIO and Pin mux/config hardware

controller. It controls the input/output settings on the available pads/pins

and also provides ability to multiplex and configure the output of various

on-chip controllers onto these pads.



Required Properties:

- compatible: should be one of the following.

  - "samsung,pinctrl-exynos4210": for Exynos4210 compatible pin-controller.

  - "samsung,pinctrl-exynos5250": for Exynos5250 compatible pin-controller.



- reg: Base address of the pin controller hardware module and length of

  the address space it occupies.



- interrupts: interrupt specifier for the controller. The format and value of

  the interrupt specifier depends on the interrupt parent for the controller.



- Pin mux/config groups as child nodes: The pin mux (selecting pin function

  mode) and pin config (pull up/down, driver strength) settings are represented

  as child nodes of the pin-controller node. There should be atleast one

  child node and there is no limit on the count of these child nodes.



  The child node should contain a list of pin(s) on which a particular pin

  function selection or pin configuration (or both) have to applied. This

  list of pins is specified using the property name "samsung,pins". There

  should be atleast one pin specfied for this property and there is no upper

  limit on the count of pins that can be specified. The pins are specified

  using pin names which are derived from the hardware manual of the SoC. As

  an example, the pins in GPA0 bank of the pin controller can be represented

  as "gpa0-0", "gpa0-1", "gpa0-2" and so on. The names should be in lower case.

  The format of the pin names should be (as per the hardware manual)

  "[pin bank name]-[pin number within the bank]".



  The pin function selection that should be applied on the pins listed in the

  child node is specified using the "samsung,pin-function" property. The value

  of this property that should be applied to each of the pins listed in the

  "samsung,pins" property should be picked from the hardware manual of the SoC

  for the specified pin group. This property is optional in the child node if

  no specific function selection is desired for the pins listed in the child

  node. The value of this property is used as-is to program the pin-controller

  function selector register of the pin-bank.



  The child node can also optionally specify one or more of the pin

  configuration that should be applied on all the pins listed in the

  "samsung,pins" property of the child node. The following pin configuration

  properties are supported.



  - samsung,pin-pud: Pull up/down configuration.

  - samsung,pin-drv: Drive strength configuration.

  - samsung,pin-pud-pdn: Pull up/down configuration in power down mode.

  - samsung,pin-drv-pdn: Drive strength configuration in power down mode.



  The values specified by these config properties should be derived from the

  hardware manual and these values are programmed as-is into the pin

  pull up/down and driver strength register of the pin-controller.



  Note: A child should include atleast a pin function selection property or

  pin configuration property (one or more) or both.



  The client nodes that require a particular pin function selection and/or

  pin configuration should use the bindings listed in the "pinctrl-bindings.txt"

  file.



External GPIO and Wakeup Interrupts:



The controller supports two types of external interrupts over gpio. The first

is the external gpio interrupt and second is the external wakeup interrupts.

The difference between the two is that the external wakeup interrupts can be

used as system wakeup events.



A. External GPIO Interrupts: For supporting external gpio interrupts, the

   following properties should be specified in the pin-controller device node.



- interrupt-controller: identifies the controller node as interrupt-parent.

- #interrupt-cells: the value of this property should be 2.

  - First Cell: represents the external gpio interrupt number local to the

    external gpio interrupt space of the controller.

  - Second Cell: flags to identify the type of the interrupt

    - 1 = rising edge triggered

    - 2 = falling edge triggered

    - 3 = rising and falling edge triggered

    - 4 = high level triggered

    - 8 = low level triggered



B. External Wakeup Interrupts: For supporting external wakeup interrupts, a

   child node representing the external wakeup interrupt controller should be

   included in the pin-controller device node. This child node should include

   the following properties.



   - compatible: identifies the type of the external wakeup interrupt controller

     The possible values are:

     - samsung,exynos4210-wakeup-eint: represents wakeup interrupt controller

       found on Samsung Exynos4210 SoC.

   - interrupt-parent: phandle of the interrupt parent to which the external

     wakeup interrupts are forwarded to.

   - interrupt-controller: identifies the node as interrupt-parent.

   - #interrupt-cells: the value of this property should be 2

     - First Cell: represents the external wakeup interrupt number local to

       the external wakeup interrupt space of the controller.

     - Second Cell: flags to identify the type of the interrupt

       - 1 = rising edge triggered

       - 2 = falling edge triggered

       - 3 = rising and falling edge triggered

       - 4 = high level triggered

       - 8 = low level triggered



Aliases:



All the pin controller nodes should be represented in the aliases node using

the following format 'pinctrl{n}' where n is a unique number for the alias.



Example 1: A pin-controller node with pin groups.



	pinctrl_0: pinctrl@11400000 {

		compatible = "samsung,pinctrl-exynos4210";

		reg = <0x11400000 0x1000>;

		interrupts = <0 47 0>;



		uart0_data: uart0-data {

			samsung,pins = "gpa0-0", "gpa0-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart0_fctl: uart0-fctl {

			samsung,pins = "gpa0-2", "gpa0-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart1_data: uart1-data {

			samsung,pins = "gpa0-4", "gpa0-5";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart1_fctl: uart1-fctl {

			samsung,pins = "gpa0-6", "gpa0-7";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		i2c2_bus: i2c2-bus {

			samsung,pins = "gpa0-6", "gpa0-7";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};

	};



Example 2: A pin-controller node with external wakeup interrupt controller node.



	pinctrl_1: pinctrl@11000000 {

		compatible = "samsung,pinctrl-exynos4210";

		reg = <0x11000000 0x1000>;

		interrupts = <0 46 0>;

		interrupt-controller;

		#interrupt-cells = <2>;



		wakup_eint: wakeup-interrupt-controller {

			compatible = "samsung,exynos4210-wakeup-eint";

			interrupt-parent = <&gic>;

			interrupt-controller;

			#interrupt-cells = <2>;

			interrupts = <0 16 0>, <0 17 0>, <0 18 0>, <0 19 0>,

					<0 20 0>, <0 21 0>, <0 22 0>, <0 23 0>,

					<0 24 0>, <0 25 0>, <0 26 0>, <0 27 0>,

					<0 28 0>, <0 29 0>, <0 30 0>, <0 31 0>,

					<0 32 0>;

		};

	};



Example 3: A uart client node that supports 'default' and 'flow-control' states.



	uart@13800000 {

		compatible = "samsung,exynos4210-uart";

		reg = <0x13800000 0x100>;

		interrupts = <0 52 0>;

		pinctrl-names = "default", "flow-control;

		pinctrl-0 = <&uart0_data>;

		pinctrl-1 = <&uart0_data &uart0_fctl>;

	};



Example 4: Set up the default pin state for uart controller.



	static int s3c24xx_serial_probe(struct platform_device *pdev) {

		struct pinctrl *pinctrl;

		...

		...

		pinctrl = devm_pinctrl_get_select_default(&pdev->dev);

	}

arch/arm/boot/dts/exynos4210-pinctrl.dtsi

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/*

 * Samsung's Exynos4210 SoC pin-mux and pin-config device tree source

 *

 * Copyright (c) 2011-2012 Samsung Electronics Co., Ltd.

 *		http://www.samsung.com

 * Copyright (c) 2011-2012 Linaro Ltd.

 *		www.linaro.org

 *

 * Samsung's Exynos4210 SoC pin-mux and pin-config optiosn are listed as device

 * tree nodes are listed in this file.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

*/



/ {

	pinctrl@11400000 {

		uart0_data: uart0-data {

			samsung,pins = "gpa0-0", "gpa0-1";

			samsung,pin-function = <0x2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart0_fctl: uart0-fctl {

			samsung,pins = "gpa0-2", "gpa0-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart1_data: uart1-data {

			samsung,pins = "gpa0-4", "gpa0-5";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart1_fctl: uart1-fctl {

			samsung,pins = "gpa0-6", "gpa0-7";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		i2c2_bus: i2c2-bus {

			samsung,pins = "gpa0-6", "gpa0-7";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		uart2_data: uart2-data {

			samsung,pins = "gpa1-0", "gpa1-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart2_fctl: uart2-fctl {

			samsung,pins = "gpa1-2", "gpa1-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart_audio_a: uart-audio-a {

			samsung,pins = "gpa1-0", "gpa1-1";

			samsung,pin-function = <4>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		i2c3_bus: i2c3-bus {

			samsung,pins = "gpa1-2", "gpa1-3";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		uart3_data: uart3-data {

			samsung,pins = "gpa1-4", "gpa1-5";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		uart_audio_b: uart-audio-b {

			samsung,pins = "gpa1-4", "gpa1-5";

			samsung,pin-function = <4>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		spi0_bus: spi0-bus {

			samsung,pins = "gpb-0", "gpb-2", "gpb-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2c4_bus: i2c4-bus {

			samsung,pins = "gpb-2", "gpb-3";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		spi1_bus: spi1-bus {

			samsung,pins = "gpb-4", "gpb-6", "gpb-7";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2c5_bus: i2c5-bus {

			samsung,pins = "gpb-6", "gpb-7";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2s1_bus: i2s1-bus {

			samsung,pins = "gpc0-0", "gpc0-1", "gpc0-2", "gpc0-3",

					"gpc0-4";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		pcm1_bus: pcm1-bus {

			samsung,pins = "gpc0-0", "gpc0-1", "gpc0-2", "gpc0-3",

					"gpc0-4";

			samsung,pin-function = <3>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		ac97_bus: ac97-bus {

			samsung,pins = "gpc0-0", "gpc0-1", "gpc0-2", "gpc0-3",

					"gpc0-4";

			samsung,pin-function = <4>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		i2s2_bus: i2s2-bus {

			samsung,pins = "gpc1-0", "gpc1-1", "gpc1-2", "gpc1-3",

					"gpc1-4";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		pcm2_bus: pcm2-bus {

			samsung,pins = "gpc1-0", "gpc1-1", "gpc1-2", "gpc1-3",

					"gpc1-4";

			samsung,pin-function = <3>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		spdif_bus: spdif-bus {

			samsung,pins = "gpc1-0", "gpc1-1";

			samsung,pin-function = <4>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		i2c6_bus: i2c6-bus {

			samsung,pins = "gpc1-3", "gpc1-4";

			samsung,pin-function = <4>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		spi2_bus: spi2-bus {

			samsung,pins = "gpc1-1", "gpc1-2", "gpc1-3", "gpc1-4";

			samsung,pin-function = <5>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2c7_bus: i2c7-bus {

			samsung,pins = "gpd0-2", "gpd0-3";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2c0_bus: i2c0-bus {

			samsung,pins = "gpd1-0", "gpd1-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		i2c1_bus: i2c1-bus {

			samsung,pins = "gpd1-2", "gpd1-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};

	};



	pinctrl@11000000 {

		sd0_clk: sd0-clk {

			samsung,pins = "gpk0-0";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd0_cmd: sd0-cmd {

			samsung,pins = "gpk0-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd0_cd: sd0-cd {

			samsung,pins = "gpk0-2";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd0_bus1: sd0-bus-width1 {

			samsung,pins = "gpk0-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd0_bus4: sd0-bus-width4 {

			samsung,pins = "gpk0-3", "gpk0-4", "gpk0-5", "gpk0-6";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd0_bus8: sd0-bus-width8 {

			samsung,pins = "gpk1-3", "gpk1-4", "gpk1-5", "gpk1-6";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd4_clk: sd4-clk {

			samsung,pins = "gpk0-0";

			samsung,pin-function = <3>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd4_cmd: sd4-cmd {

			samsung,pins = "gpk0-1";

			samsung,pin-function = <3>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd4_cd: sd4-cd {

			samsung,pins = "gpk0-2";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd4_bus1: sd4-bus-width1 {

			samsung,pins = "gpk0-3";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd4_bus4: sd4-bus-width4 {

			samsung,pins = "gpk0-3", "gpk0-4", "gpk0-5", "gpk0-6";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd4_bus8: sd4-bus-width8 {

			samsung,pins = "gpk1-3", "gpk1-4", "gpk1-5", "gpk1-6";

			samsung,pin-function = <3>;

			samsung,pin-pud = <4>;

			samsung,pin-drv = <0>;

		};



		sd1_clk: sd1-clk {

			samsung,pins = "gpk1-0";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd1_cmd: sd1-cmd {

			samsung,pins = "gpk1-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd1_cd: sd1-cd {

			samsung,pins = "gpk1-2";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd1_bus1: sd1-bus-width1 {

			samsung,pins = "gpk1-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd1_bus4: sd1-bus-width4 {

			samsung,pins = "gpk1-3", "gpk1-4", "gpk1-5", "gpk1-6";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd2_clk: sd2-clk {

			samsung,pins = "gpk2-0";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd2_cmd: sd2-cmd {

			samsung,pins = "gpk2-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd2_cd: sd2-cd {

			samsung,pins = "gpk2-2";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd2_bus1: sd2-bus-width1 {

			samsung,pins = "gpk2-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd2_bus4: sd2-bus-width4 {

			samsung,pins = "gpk2-3", "gpk2-4", "gpk2-5", "gpk2-6";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd2_bus8: sd2-bus-width8 {

			samsung,pins = "gpk3-3", "gpk3-4", "gpk3-5", "gpk3-6";

			samsung,pin-function = <3>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd3_clk: sd3-clk {

			samsung,pins = "gpk3-0";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd3_cmd: sd3-cmd {

			samsung,pins = "gpk3-1";

			samsung,pin-function = <2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		sd3_cd: sd3-cd {

			samsung,pins = "gpk3-2";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd3_bus1: sd3-bus-width1 {

			samsung,pins = "gpk3-3";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		sd3_bus4: sd3-bus-width4 {

			samsung,pins = "gpk3-3", "gpk3-4", "gpk3-5", "gpk3-6";

			samsung,pin-function = <2>;

			samsung,pin-pud = <3>;

			samsung,pin-drv = <0>;

		};



		eint0: ext-int0 {

			samsung,pins = "gpx0-0";

			samsung,pin-function = <0xf>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		eint8: ext-int8 {

			samsung,pins = "gpx1-0";

			samsung,pin-function = <0xf>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		eint15: ext-int15 {

			samsung,pins = "gpx1-7";

			samsung,pin-function = <0xf>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		eint16: ext-int16 {

			samsung,pins = "gpx2-0";

			samsung,pin-function = <0xf>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		eint31: ext-int31 {

			samsung,pins = "gpx3-7";

			samsung,pin-function = <0xf>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};

	};



	pinctrl@03860000 {

		i2s0_bus: i2s0-bus {

			samsung,pins = "gpz-0", "gpz-1", "gpz-2", "gpz-3",

					"gpz-4", "gpz-5", "gpz-6";

			samsung,pin-function = <0x2>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};



		pcm0_bus: pcm0-bus {

			samsung,pins = "gpz-0", "gpz-1", "gpz-2", "gpz-3",

					"gpz-4";

			samsung,pin-function = <0x3>;

			samsung,pin-pud = <0>;

			samsung,pin-drv = <0>;

		};

	};

};

arch/arm/boot/dts/exynos4210.dtsi

+37 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
*/



/include/ "skeleton.dtsi"

/include/ "exynos4210-pinctrl.dtsi"



/ {

	compatible = "samsung,exynos4210";
@@ -29,6 +30,9 @@ 
		spi0 = &spi_0;

		spi1 = &spi_1;

		spi2 = &spi_2;

		pinctrl0 = &pinctrl_0;

		pinctrl1 = &pinctrl_1;

		pinctrl2 = &pinctrl_2;

	};



	gic:interrupt-controller@10490000 {
@@ -50,6 +54,39 @@ 
			     <0 12 0>, <0 13 0>, <0 14 0>, <0 15 0>;

	};



	pinctrl_0: pinctrl@11400000 {

		compatible = "samsung,pinctrl-exynos4210";

		reg = <0x11400000 0x1000>;

		interrupts = <0 47 0>;

		interrupt-controller;

		#interrupt-cells = <2>;

	};



	pinctrl_1: pinctrl@11000000 {

		compatible = "samsung,pinctrl-exynos4210";

		reg = <0x11000000 0x1000>;

		interrupts = <0 46 0>;

		interrupt-controller;

		#interrupt-cells = <2>;



		wakup_eint: wakeup-interrupt-controller {

			compatible = "samsung,exynos4210-wakeup-eint";

			interrupt-parent = <&gic>;

			interrupt-controller;

			#interrupt-cells = <2>;

			interrupts = <0 16 0>, <0 17 0>, <0 18 0>, <0 19 0>,

					<0 20 0>, <0 21 0>, <0 22 0>, <0 23 0>,

					<0 24 0>, <0 25 0>, <0 26 0>, <0 27 0>,

					<0 28 0>, <0 29 0>, <0 30 0>, <0 31 0>,

					<0 32 0>;

		};

	};



	pinctrl_2: pinctrl@03860000 {

		compatible = "samsung,pinctrl-exynos4210";

		reg = <0x03860000 0x1000>;

	};



	watchdog@10060000 {

		compatible = "samsung,s3c2410-wdt";

		reg = <0x10060000 0x100>;

arch/arm/mach-exynos/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -405,6 +405,8 @@ config MACH_EXYNOS4_DT 
	select USE_OF

	select ARM_AMBA

	select HAVE_SAMSUNG_KEYPAD if INPUT_KEYBOARD

	select PINCTRL

	select PINCTRL_EXYNOS4

	help

	  Machine support for Samsung Exynos4 machine with device tree enabled.

	  Select this if a fdt blob is available for the Exynos4 SoC based board.

arch/arm/mach-exynos/common.c

+26 −0
Original line number Diff line number Diff line
@@ -980,6 +980,32 @@ static int __init exynos_init_irq_eint(void) 
{

	int irq;



#ifdef CONFIG_PINCTRL_SAMSUNG

	/*

	 * The Samsung pinctrl driver provides an integrated gpio/pinmux/pinconf

	 * functionality along with support for external gpio and wakeup

	 * interrupts. If the samsung pinctrl driver is enabled and includes

	 * the wakeup interrupt support, then the setting up external wakeup

	 * interrupts here can be skipped. This check here is temporary to

	 * allow exynos4 platforms that do not use Samsung pinctrl driver to

	 * co-exist with platforms that do. When all of the Samsung Exynos4

	 * platforms switch over to using the pinctrl driver, the wakeup

	 * interrupt support code here can be completely removed.

	 */

	struct device_node *pctrl_np, *wkup_np;

	const char *pctrl_compat = "samsung,pinctrl-exynos4210";

	const char *wkup_compat = "samsung,exynos4210-wakeup-eint";



	for_each_compatible_node(pctrl_np, NULL, pctrl_compat) {

		if (of_device_is_available(pctrl_np)) {

			wkup_np = of_find_compatible_node(pctrl_np, NULL,

							wkup_compat);

			if (wkup_np)

				return -ENODEV;

		}

	}

#endif



	if (soc_is_exynos5250())

		exynos_eint_base = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);

	else

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