linux-kernel - Re: [PATCH] iio: gyro: itg3200: Add DT support.

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Message-ID: <52DA6BCC.7010402@kernel.org>
Date:	Sat, 18 Jan 2014 11:55:56 +0000
From:	Jonathan Cameron <jic23@...nel.org>
To:	Marek Belisko <marek@...delico.com>, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
	rob@...dley.net, grant.likely@...aro.org
CC:	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	NeilBrown <neilb@...e.de>
Subject: Re: [PATCH] iio: gyro: itg3200: Add DT support.



On 11/01/14 21:17, Marek Belisko wrote:
> Signed-off-by: NeilBrown <neilb@...e.de>
> Signed-off-by: Marek Belisko <marek@...delico.com>
Unless it is very recent, I don't the the invensense vendor-prefix is in
vendor-prefixes.txt. Please add that to the patch.

Otherwise, there is nothing here that isn't covered by the trivial
i2c bindings - thus perhaps it should be an entry in bindings/i2c/trivial-devices.txt?

Personally I'm not that fond of the trivial file as a single location
for the relevant info makes more sense to me.  Still thought I'd bring
it up as a possibility.

Jonathan
> ---
>   .../devicetree/bindings/iio/gyro/itg3200.txt       | 22 ++++++++++++++++++++++
>   drivers/iio/gyro/itg3200_core.c                    |  9 +++++++++
>   2 files changed, 31 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/iio/gyro/itg3200.txt
>
> diff --git a/Documentation/devicetree/bindings/iio/gyro/itg3200.txt b/Documentation/devicetree/bindings/iio/gyro/itg3200.txt
> new file mode 100644
> index 0000000..b1b18dc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/gyro/itg3200.txt
> @@ -0,0 +1,22 @@
> +* InvenSense ITG-3200 gyroscope
> +
> +http://www.invensense.com/mems/gyro/itg3200.html
> +
> +Required properties:
> +
> +  - compatible : should be "invensense,itg3200"
> +  - reg : the I2C address of the sensor
> +
> +Optional properties:
> +
> +  - interrupt-parent : should be the phandle for the interrupt controller
> +  - interrupts : interrupt mapping for GPIO IRQ
> +
> +Example:
> +
> +itg3200@68 {
> +	compatible = "invensense,itg3200";
> +	reg = <0x68>;
> +	interrupt-parent = <&gpio2>;
> +	interrupts = <29 IRQ_TYPE_EDGE_RISING>;
> +};
> diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c
> index 4d3f3b9..adbf20d 100644
> --- a/drivers/iio/gyro/itg3200_core.c
> +++ b/drivers/iio/gyro/itg3200_core.c
> @@ -374,10 +374,19 @@ static const struct i2c_device_id itg3200_id[] = {
>   };
>   MODULE_DEVICE_TABLE(i2c, itg3200_id);
>
> +#ifdef CONFIG_OF
> +static const struct of_device_id itg3200_of_match[] = {
> +	{ .compatible = "invensense,itg3200", },
> +	{}
> +};
> +MODULE_DEVICE_TABLE(of, itg3200_of_match);
> +#endif
> +
>   static struct i2c_driver itg3200_driver = {
>   	.driver = {
>   		.owner  = THIS_MODULE,
>   		.name	= "itg3200",
> +		.of_match_table = of_match_ptr(itg3200_of_match),
>   	},
>   	.id_table	= itg3200_id,
>   	.probe		= itg3200_probe,
>
--
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