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[v7,2/8] ARM: dt: Binding documentation for imx25 GCQ

Message ID 1425369498-25541-3-git-send-email-mpa@pengutronix.de (mailing list archive)
State New, archived
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Commit Message

Markus Pargmann March 3, 2015, 7:58 a.m. UTC
The documentation describes the bindings for the imx25 GCQ unit which is
essentially a generic conversion queue using the imx25 ADC.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---

Notes:
    Changes in v6:
     - Changed bindings to use adc-refp and adc-refn. Also a bit of cleanup in the
       setup routine.
    
    Changes in v5:
     - Fixed locking
     - Removed module owner

 .../devicetree/bindings/iio/adc/fsl,imx25-gcq.txt  | 54 ++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt

Comments

Jonathan Cameron March 7, 2015, 5:33 p.m. UTC | #1
On 03/03/15 07:58, Markus Pargmann wrote:
> The documentation describes the bindings for the imx25 GCQ unit which is
> essentially a generic conversion queue using the imx25 ADC.
> 
> Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Looks good to me, though ideally these would get a devicetree maintainer
ack.

Acked-by: Jonathan Cameron <jic23@kernel.org>
> ---
> 
> Notes:
>     Changes in v6:
>      - Changed bindings to use adc-refp and adc-refn. Also a bit of cleanup in the
>        setup routine.
>     
>     Changes in v5:
>      - Fixed locking
>      - Removed module owner
> 
>  .../devicetree/bindings/iio/adc/fsl,imx25-gcq.txt  | 54 ++++++++++++++++++++++
>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt b/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt
> new file mode 100644
> index 000000000000..9f7c08990034
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt
> @@ -0,0 +1,54 @@
> +Freescale i.MX25 ADC GCQ device
> +
> +This is a generic conversion queue device that can convert any of the
> +analog inputs using the ADC unit of the i.MX25.
> +
> +Required properties:
> + - compatible: Should be "fsl,imx25-gcq".
> + - reg: Should be the register range of the module.
> + - interrupts: Should be the interrupt number of the module.
> +   Typically this is <1>.
> + - interrupt-parent: phandle to the tsadc module of the i.MX25.
> + - #address-cells: Should be <1> (setting for the subnodes)
> + - #size-cells: Should be <0> (setting for the subnodes)
> +
> +Optional properties:
> + - vref-supply: The regulator supplying the ADC reference voltage.
> +   Required when at least one subnode uses the external reference.
> +
> +Sub-nodes:
> +Optionally you can define subnodes which define the reference voltage
> +for the analog inputs.
> +
> +Required properties for subnodes:
> + - reg: Should be the number of the analog input.
> +     0: xp
> +     1: yp
> +     2: xn
> +     3: yn
> +     4: wiper
> +     5: inaux0
> +     6: inaux1
> +     7: inaux2
> +Optional properties for subnodes:
> + - fsl,adc-refp: specifies the positive reference input as defined in
> +     <dt-bindings/iio/adc/fsl-imx25-gcq.h>
> + - fsl,adc-refn: specifies the negative reference input as defined in
> +     <dt-bindings/iio/adc/fsl-imx25-gcq.h>
> +
> +Example:
> +
> +	adc: adc@50030800 {
> +		compatible = "fsl,imx25-gcq";
> +		reg = <0x50030800 0x60>;
> +		interrupt-parent = <&tscadc>;
> +		interrupts = <1>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		inaux@5 {
> +			reg = <5>;
> +			fsl,adc-refp = <MX25_ADC_REF_INT>;
> +			fsl,adc-refn = <MX25_ADC_REF_NGND>;
> +		};
> +	};
>
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt b/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt
new file mode 100644
index 000000000000..9f7c08990034
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/fsl,imx25-gcq.txt
@@ -0,0 +1,54 @@ 
+Freescale i.MX25 ADC GCQ device
+
+This is a generic conversion queue device that can convert any of the
+analog inputs using the ADC unit of the i.MX25.
+
+Required properties:
+ - compatible: Should be "fsl,imx25-gcq".
+ - reg: Should be the register range of the module.
+ - interrupts: Should be the interrupt number of the module.
+   Typically this is <1>.
+ - interrupt-parent: phandle to the tsadc module of the i.MX25.
+ - #address-cells: Should be <1> (setting for the subnodes)
+ - #size-cells: Should be <0> (setting for the subnodes)
+
+Optional properties:
+ - vref-supply: The regulator supplying the ADC reference voltage.
+   Required when at least one subnode uses the external reference.
+
+Sub-nodes:
+Optionally you can define subnodes which define the reference voltage
+for the analog inputs.
+
+Required properties for subnodes:
+ - reg: Should be the number of the analog input.
+     0: xp
+     1: yp
+     2: xn
+     3: yn
+     4: wiper
+     5: inaux0
+     6: inaux1
+     7: inaux2
+Optional properties for subnodes:
+ - fsl,adc-refp: specifies the positive reference input as defined in
+     <dt-bindings/iio/adc/fsl-imx25-gcq.h>
+ - fsl,adc-refn: specifies the negative reference input as defined in
+     <dt-bindings/iio/adc/fsl-imx25-gcq.h>
+
+Example:
+
+	adc: adc@50030800 {
+		compatible = "fsl,imx25-gcq";
+		reg = <0x50030800 0x60>;
+		interrupt-parent = <&tscadc>;
+		interrupts = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		inaux@5 {
+			reg = <5>;
+			fsl,adc-refp = <MX25_ADC_REF_INT>;
+			fsl,adc-refn = <MX25_ADC_REF_NGND>;
+		};
+	};