[PATCH] rtc: i.MX dryice: Add devicetree support

[Shawn Guo]

On Mon, Sep 24, 2012 at 09:32:05AM +0200, Sascha Hauer wrote:
> Add devicetree probing, fixing some whitespace damage along the way.
> 
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---
>  Documentation/devicetree/bindings/rtc/imx-di.txt |   21 +++++++++++++++++++++
>  drivers/rtc/rtc-imxdi.c                          |   12 +++++++++---
>  2 files changed, 30 insertions(+), 3 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/rtc/imx-di.txt
> 
> diff --git a/Documentation/devicetree/bindings/rtc/imx-di.txt b/Documentation/devicetree/bindings/rtc/imx-di.txt
> new file mode 100644
> index 0000000..635a753
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/imx-di.txt
> @@ -0,0 +1,21 @@
> +* i.MX25 dryice Real Time Clock controller
> +
> +This RTC is part of the i.MX25 dryice module. Documentation for this
> +unit is not publically available. This binding only makes use of the
> +RTC.
> +
> +Required properties:
> +- compatible: should be "fsl,imx25-rtc"
> +- reg: physical base address of the controller and length of memory mapped
> +  region.
> +
> +Optional properties:
> +- interrupts: interrupt source for the dryice module

Is it optional?  It seems to me that the probe will fail if
platform_get_irq fails.

Shawn

> +
> +Example:
> +
> +	dryice at 53ffc000 {
> +		compatible = "fsl,imx25-dryice", "fsl,imx25-rtc";
> +		reg = <0x53ffc000 0x4000>;
> +		interrupts = <25>;
> +	};
> diff --git a/drivers/rtc/rtc-imxdi.c b/drivers/rtc/rtc-imxdi.c
> index 891cd6c..b2fe920 100644
> --- a/drivers/rtc/rtc-imxdi.c
> +++ b/drivers/rtc/rtc-imxdi.c
> @@ -493,11 +493,17 @@ static int __devexit dryice_rtc_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> +static const struct of_device_id of_dryice_rtc_match[] = {
> +	{ .compatible = "fsl,imx25-rtc", },
> +	{ },
> +};
> +
>  static struct platform_driver dryice_rtc_driver = {
>  	.driver = {
> -		   .name = "imxdi_rtc",
> -		   .owner = THIS_MODULE,
> -		   },
> +		.name = "imxdi_rtc",
> +		.owner = THIS_MODULE,
> +		.of_match_table = of_dryice_rtc_match,
> +	},
>  	.remove = __devexit_p(dryice_rtc_remove),
>  };
>  
> -- 
> 1.7.10.4
> 
> 
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