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Date: Fri, 4 Dec 2015 08:57:11 -0600
From: Rob Herring <robh@kernel.org>
To: Jin Qian <jinqian@android.com>
Cc: Pawel Moll <pawel.moll@arm.com>, Mark Rutland <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>,
        Greg Hackmann <ghackmann@google.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Yu Ning <yu.ning@intel.com>,
        Alex =?iso-8859-1?Q?Benn=E9e?= <alex.bennee@linaro.org>,
        Christoffer Dall <christoffer.dall@linaro.org>,
        Peter Senna Tschudin <peter.senna@gmail.com>,
        Jason Hu <jia-cheng.hu@intel.com>, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 4/8] platform: goldfish: pipe: add devicetree bindings
Message-ID: <20151204145711.GA22901@rob-hp-laptop>
References: <1449084968-30211-1-git-send-email-jinqian@android.com>
 <1449084968-30211-4-git-send-email-jinqian@android.com>
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On Wed, Dec 02, 2015 at 11:35:59AM -0800, Jin Qian wrote:
> From: Greg Hackmann <ghackmann@google.com>
> 
> Add bindings so we don't need to rely on goldfish virtual bus for
> probing any more, which means we don't need ARM and MIPS goldfish
> board code for instantiating the bus.
> 
> In the long term we would like to move towards replacing the Android
> pipe with virtio-vsock that is currently under development.
> 
> Signed-off-by: Greg Hackmann <ghackmann@google.com>
> Signed-off-by: Jin Qian <jinqian@android.com>

Acked-by: Rob Herring <robh@kernel.org>

> ---
>  Documentation/devicetree/bindings/goldfish/pipe.txt | 17 +++++++++++++++++
>  drivers/platform/goldfish/goldfish_pipe.c           | 10 +++++++++-
>  2 files changed, 26 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/goldfish/pipe.txt
> 
> diff --git a/Documentation/devicetree/bindings/goldfish/pipe.txt b/Documentation/devicetree/bindings/goldfish/pipe.txt
> new file mode 100644
> index 0000000..e417a31
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/goldfish/pipe.txt
> @@ -0,0 +1,17 @@
> +Android Goldfish QEMU Pipe
> +
> +Andorid pipe virtual device generated by android emulator.
> +
> +Required properties:
> +
> +- compatible : should contain "google,android-pipe" to match emulator
> +- reg        : <registers mapping>
> +- interrupts : <interrupt mapping>
> +
> +Example:
> +
> +	android_pipe@a010000 {
> +		compatible = "google,android-pipe";
> +		reg = <ff018000 0x2000>;
> +		interrupts = <0x12>;
> +	};
> diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
> index 20a9337..0b187ff 100644
> --- a/drivers/platform/goldfish/goldfish_pipe.c
> +++ b/drivers/platform/goldfish/goldfish_pipe.c
> @@ -624,11 +624,19 @@ static int goldfish_pipe_remove(struct platform_device *pdev)
>  	return 0;
>  }
>  
> +static const struct of_device_id goldfish_pipe_of_match[] = {
> +	{ .compatible = "google,android-pipe", },
> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, goldfish_pipe_of_match);
> +
>  static struct platform_driver goldfish_pipe = {
>  	.probe = goldfish_pipe_probe,
>  	.remove = goldfish_pipe_remove,
>  	.driver = {
> -		.name = "goldfish_pipe"
> +		.name = "goldfish_pipe",
> +		.owner = THIS_MODULE,
> +		.of_match_table = goldfish_pipe_of_match,
>  	}
>  };
>  
> -- 
> 2.6.0.rc2.230.g3dd15c0
> 
--
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