[v3] ARM: mx23: Add initial support for olinuxino board

mx23-olinuxino is a low cost board designed by Olimex.

It has the following features:

- Freescale iMX233 ARM926J processor at 454MHz
-64 MB RAM
-SD-card connector
-TV PAL/NTSC video output
-2 USB High Speed Hosts
-Ethernet 100 Mbit
-Stereo Audio Input
-Stereo Headphones Audio Output

More information at:
http://www.olimex.com/dev/imx233-olinuxino-maxi.html

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
---
Changes since v2:
- Add an olimex.txt file
- Change the compatible board string to 'olimex,imx23-olinuxino'
- Keep the board entry in imx23_dt_compat
Changes since v1:
- Drop "fsl,imx23-olinuxino" from mach-mxs.c
 Documentation/devicetree/bindings/arm/olimex.txt |    6 +++
 arch/arm/boot/dts/imx23-olinuxino.dts            |   44 ++++++++++++++++++++++
 arch/arm/boot/dts/imx23.dtsi                     |   14 +++++++
 arch/arm/mach-mxs/mach-mxs.c                     |    1 +
 4 files changed, 65 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/olimex.txt
 create mode 100644 arch/arm/boot/dts/imx23-olinuxino.dts

Dear Fabio Estevam,

> mx23-olinuxino is a low cost board designed by Olimex.
> 
> It has the following features:
> 
> - Freescale iMX233 ARM926J processor at 454MHz
> -64 MB RAM
> -SD-card connector
> -TV PAL/NTSC video output
> -2 USB High Speed Hosts
> -Ethernet 100 Mbit
> -Stereo Audio Input
> -Stereo Headphones Audio Output
> 
> More information at:
> http://www.olimex.com/dev/imx233-olinuxino-maxi.html
> 
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
> ---
> Changes since v2:
> - Add an olimex.txt file
> - Change the compatible board string to 'olimex,imx23-olinuxino'
> - Keep the board entry in imx23_dt_compat
> Changes since v1:
> - Drop "fsl,imx23-olinuxino" from mach-mxs.c
>  Documentation/devicetree/bindings/arm/olimex.txt |    6 +++
>  arch/arm/boot/dts/imx23-olinuxino.dts            |   44
> ++++++++++++++++++++++ arch/arm/boot/dts/imx23.dtsi                     | 
>  14 +++++++
>  arch/arm/mach-mxs/mach-mxs.c                     |    1 +
>  4 files changed, 65 insertions(+), 0 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/arm/olimex.txt
>  create mode 100644 arch/arm/boot/dts/imx23-olinuxino.dts
> 
> diff --git a/Documentation/devicetree/bindings/arm/olimex.txt
> b/Documentation/devicetree/bindings/arm/olimex.txt new file mode 100644
> index 0000000..007fb5c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/olimex.txt
> @@ -0,0 +1,6 @@
> +Olimex i.MX Platforms Device Tree Bindings
> +------------------------------------------
> +
> +i.MX23 Olinuxino Low Cost Board
> +Required root node properties:
> +    - compatible = "olimex,imx23-olinuxino", "fsl,imx23";
> diff --git a/arch/arm/boot/dts/imx23-olinuxino.dts
> b/arch/arm/boot/dts/imx23-olinuxino.dts new file mode 100644
> index 0000000..7abdd40
> --- /dev/null
> +++ b/arch/arm/boot/dts/imx23-olinuxino.dts
> @@ -0,0 +1,44 @@
> +/*
> + * Copyright 2012 Freescale Semiconductor, Inc.
> + *
> + * Author: Fabio Estevam <fabio.estevam@freescale.com>
> + *
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +/dts-v1/;
> +/include/ "imx23.dtsi"
> +
> +/ {
> +	model = "i.MX23 Olinuxino Low Cost Board";
> +	compatible = "olimex,imx23-olinuxino", "fsl,imx23";
> +
> +	memory {
> +		reg = <0x40000000 0x08000000>;
> +	};
> +
> +	apb@80000000 {
> +		apbh@80000000 {
> +			ssp0: ssp@80010000 {
> +				compatible = "fsl,imx23-mmc";
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_sck_cfg>;
> +				bus-width = <4>;
> +				status = "okay";
> +			};
> +		};
> +
> +		apbx@80040000 {
> +			duart: serial@80070000 {
> +				pinctrl-names = "default";
> +				pinctrl-0 = <&duart_pins_a>;
> +				status = "okay";
> +			};
> +		};
> +	};
> +};
> diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi
> index 8c5f999..6fc3f54 100644
> --- a/arch/arm/boot/dts/imx23.dtsi
> +++ b/arch/arm/boot/dts/imx23.dtsi
> @@ -134,6 +134,20 @@
>  					fsl,pinmux-ids = <0x2010 0x2060>;
>  					fsl,pull-up = <0>;
>  				};
> +
> +				mmc0_4bit_pins_a: mmc0-4bit@0 {
> +					reg = <0>;
> +					fsl,pinmux-ids = <0x2000 0x2020 0x2030
> +						0x2040 0x2050>;
> +					fsl,drive-strength = <1>;
> +					fsl,voltage = <1>;
> +					fsl,pull-up = <1>;
> +				};
> +
> +				mmc0_sck_cfg: mmc0_sck_cfg {
> +					fsl,pinmux-ids = <0x2010>;
> +					fsl,pull-up = <0>;
> +				};
>  			};
> 
>  			digctl@8001c000 {
> diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
> index 8cac94b..a321753 100644
> --- a/arch/arm/mach-mxs/mach-mxs.c
> +++ b/arch/arm/mach-mxs/mach-mxs.c
> @@ -92,6 +92,7 @@ static void __init mxs_machine_init(void)
> 
>  static const char *imx23_dt_compat[] __initdata = {
>  	"fsl,imx23-evk",
> +	"fsl,imx23-olinuxino",

olimex,imx23-olinuxino ...

>  	"fsl,imx23",
>  	NULL,
>  };

Best regards,
Marek Vasut