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    Subject[PATCH] add hardware I2C support for ARM IMX23
    The I2C hardware in the IMX233 is currently not supported,
    however the i2c-mxs driver seems to be suitable.
    To use the i2c-mxs driver it has to be added to the devicetree
    for the IMX23.


    Signed-off-by: Sander van Ginkel <sander@van-ginkel.eu>
    ---
    diff -Naur linux-3.7-rc6/arch/arm/boot/dts/imx23-olinuxino.dts
    linux-3.7-rc6-i2c/arch/arm/boot/dts/imx23-olinuxino.dts
    --- linux-3.7-rc6/arch/arm/boot/dts/imx23-olinuxino.dts 2012-11-17
    01:42:40.000000000 +0000
    +++ linux-3.7-rc6-i2c/arch/arm/boot/dts/imx23-olinuxino.dts 2012-11-24
    22:40:51.000000000 +0000
    @@ -50,6 +50,13 @@
    };

    apbx@80040000 {
    +
    + i2c0: i2c@80058000 {
    + pinctrl-names = "default";
    + pinctrl-0 = <&i2c0_pins_a>;
    + status = "okay";
    + };
    +
    duart: serial@80070000 {
    pinctrl-names = "default";
    pinctrl-0 = <&duart_pins_a>;
    diff -Naur linux-3.7-rc6/arch/arm/boot/dts/imx23.dtsi
    linux-3.7-rc6-i2c/arch/arm/boot/dts/imx23.dtsi
    --- linux-3.7-rc6/arch/arm/boot/dts/imx23.dtsi 2012-11-17
    01:42:40.000000000 +0000
    +++ linux-3.7-rc6-i2c/arch/arm/boot/dts/imx23.dtsi 2012-11-24
    22:40:51.000000000 +0000
    @@ -144,6 +144,17 @@
    fsl,pull-up = <0>;
    };

    + i2c0_pins_a: i2c0@0 {
    + reg = <0>;
    + fsl,pinmux-ids = <
    + 0x1171 /* MX23_PAD_LCD_ENABLE__I2C_SCL */
    + 0x1181 /* MX23_PAD_LCD_HSYNC__I2C_SDA */
    + >;
    + fsl,drive-strength = <1>;
    + fsl,voltage = <1>;
    + fsl,pull-up = <1>;
    + };
    +
    auart0_2pins_a: auart0-2pins@0 {
    reg = <0>;
    fsl,pinmux-ids = <
    @@ -387,9 +398,15 @@
    status = "disabled";
    };

    - i2c@80058000 {
    + i2c0: i2c@80058000 {
    + #address-cells = <2>;
    + #size-cells = <1>;
    + compatible = "fsl,imx28-i2c";
    reg = <0x80058000 0x2000>;
    + interrupts = <26 27>;
    + clock-frequency = <100000>;
    status = "disabled";
    + fsl,i2c-dma-channel = <3>;
    };

    rtc@8005c000 {



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