diff mbox series

[v2,5/7] dt-bindings: iio: adc: add bindings doc for AXI ADC driver

Message ID 20200226150835.19649-6-alexandru.ardelean@analog.com (mailing list archive)
State New, archived
Headers show
Series iio: adi-axi-adc,ad9647: Add support for AD9467 ADC | expand

Commit Message

Alexandru Ardelean Feb. 26, 2020, 3:08 p.m. UTC 
This change adds the bindings documentation for the AXI ADC driver.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
---
 .../bindings/iio/adc/adi,axi-adc.yaml         | 69 +++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml

Comments

Alexandru Ardelean Feb. 27, 2020, 7:06 a.m. UTC | #1 
On Wed, 2020-02-26 at 17:08 +0200, Alexandru Ardelean wrote:
> [External]
> 
> This change adds the bindings documentation for the AXI ADC driver.
> 
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
> ---
>  .../bindings/iio/adc/adi,axi-adc.yaml         | 69 +++++++++++++++++++
>  1 file changed, 69 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml

I just had a thought.
Since the driver name is now called adi-axi-adc.c, maybe it's a good idea to
also change this to adi-axi-adc.yaml

> new file mode 100644
> index 000000000000..65ffd337cd2f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
> @@ -0,0 +1,69 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/adi,axi-adc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AXI ADC IP core
> +
> +maintainers:
> +  - Michael Hennerich <michael.hennerich@analog.com>
> +  - Alexandru Ardelean <alexandru.ardelean@analog.com>
> +
> +description: |
> +  Analog Devices Generic AXI ADC IP core for interfacing an ADC device
> +  with a high speed serial (JESD204B/C) or source synchronous parallel
> +  interface (LVDS/CMOS).
> +  Usually, some other interface type (i.e SPI) is used as a control
> +  interface for the actual ADC, while this IP core will interface
> +  to the data-lines of the ADC and handle the streaming of data into
> +  memory via DMA.
> +
> +  https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,axi-adc-10.0.a
> +
> +  reg:
> +    maxItems: 1
> +
> +  dmas:
> +    minItems: 1
> +    maxItems: 1
> +
> +  dma-names:
> +    maxItems: 1
> +    items:
> +      - const: rx
> +
> +  adi-axi-adc-client:

Maybe one for Rob here.
[ I also noticed that I forgot to add the DT list; will do that on V3 ]

The reason I named this field 'adi-axi-adc-client' and not 'adi,axi-adc-client'
is because I would get:

Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml: properties:adi,axi-
adc-client: {'description': 'A reference to a the actual ADC to which this FPGA
ADC interfaces to.', 'maxItems': 1} is not valid under any of the given schemas
(Possible causes of the failure):
	/home/sandu/work/linux/upstream/Documentation/devicetree/bindings/iio/ad
c/adi,axi-adc.yaml: properties:adi,axi-adc-client: 'not' is a required property

make[1]: *** [Documentation/devicetree/bindings/Makefile:12:
Documentation/devicetree/bindings/iio/adc/adi,axi-adc.example.dts] Error 1


> +    description:
> +      A reference to a the actual ADC to which this FPGA ADC interfaces to.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - dmas
> +  - reg
> +  - adi-axi-adc-client
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    fpga_axi {
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        axi-adc@44a00000 {
> +          compatible = "adi,axi-adc-10.0.a";
> +          reg = <0x44a00000 0x10000>;
> +          dmas = <&rx_dma 0>;
> +          dma-names = "rx";
> +
> +          adi-axi-adc-client = <&spi_adc>;
> +        };
> +    };
> +...
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
new file mode 100644
index 000000000000..65ffd337cd2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
@@ -0,0 +1,69 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,axi-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AXI ADC IP core
+
+maintainers:
+  - Michael Hennerich <michael.hennerich@analog.com>
+  - Alexandru Ardelean <alexandru.ardelean@analog.com>
+
+description: |
+  Analog Devices Generic AXI ADC IP core for interfacing an ADC device
+  with a high speed serial (JESD204B/C) or source synchronous parallel
+  interface (LVDS/CMOS).
+  Usually, some other interface type (i.e SPI) is used as a control
+  interface for the actual ADC, while this IP core will interface
+  to the data-lines of the ADC and handle the streaming of data into
+  memory via DMA.
+
+  https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
+
+properties:
+  compatible:
+    enum:
+      - adi,axi-adc-10.0.a
+
+  reg:
+    maxItems: 1
+
+  dmas:
+    minItems: 1
+    maxItems: 1
+
+  dma-names:
+    maxItems: 1
+    items:
+      - const: rx
+
+  adi-axi-adc-client:
+    description:
+      A reference to a the actual ADC to which this FPGA ADC interfaces to.
+    maxItems: 1
+
+required:
+  - compatible
+  - dmas
+  - reg
+  - adi-axi-adc-client
+
+additionalProperties: false
+
+examples:
+  - |
+    fpga_axi {
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        axi-adc@44a00000 {
+          compatible = "adi,axi-adc-10.0.a";
+          reg = <0x44a00000 0x10000>;
+          dmas = <&rx_dma 0>;
+          dma-names = "rx";
+
+          adi-axi-adc-client = <&spi_adc>;
+        };
+    };
+...