Add devicetree bindings for adl8113.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
.../bindings/iio/amplifiers/adi,adl8113.yaml | 76 +++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
new file mode 100644
index 000000000000..4cc21c93233c
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/amplifiers/adi,adl8113.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices ADL8113 Low Noise Amplifier with integrated bypass switches
+
+maintainers:
+ - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+ The ADL8113 is a 10MHz to 12GHz Low Noise Amplifier with integrated bypass
+ switches controlled by two GPIO pins (VA and VB). The device supports four
+ operation modes:
+ - Internal Amplifier: VA=0, VB=0 - Signal passes through the internal LNA
+ - Internal Bypass: VA=1, VB=1 - Signal bypasses through internal path
+ - External Bypass A: VA=0, VB=1 - Signal routes through external bypass path A
+ - External Bypass B: VA=1, VB=0 - Signal routes through external bypass path B
+
+ https://www.analog.com/en/products/adl8113.html
+
+properties:
+ compatible:
+ const: adi,adl8113
+
+ vdd1-supply: true
+
+ vdd2-supply: true
+
+ vss2-supply: true
+
+ va-gpios:
+ description:
+ GPIO connected to the VA control pin. Must be specified as GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ vb-gpios:
+ description:
+ GPIO connected to the VB control pin. Must be specified as GPIO_ACTIVE_HIGH.
+ maxItems: 1
+
+ adi,initial-mode:
+ description: |
+ Initial operation mode after device initialization
+ 0 - Internal Amplifier (default)
+ 1 - Internal Bypass
+ 2 - External Bypass A
+ 3 - External Bypass B
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1, 2, 3]
+ default: 0
+
+required:
+ - compatible
+ - va-gpios
+ - vb-gpios
+ - vdd1-supply
+ - vdd2-supply
+ - vss2-supply
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ amplifier {
+ compatible = "adi,adl8113";
+ va-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
+ vb-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
+ vdd1-supply = <&vdd1_5v>;
+ vdd2-supply = <&vdd2_3v3>;
+ vss2-supply = <&vss2_neg>;
+ adi,initial-mode = <0>;
+ };
+...
--
2.43.0On Fri, 31 Oct 2025 16:04:03 +0000
Antoniu Miclaus <antoniu.miclaus@analog.com> wrote:
> Add devicetree bindings for adl8113.
>
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
> ---
> .../bindings/iio/amplifiers/adi,adl8113.yaml | 76 +++++++++++++++++++
> 1 file changed, 76 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
> new file mode 100644
> index 000000000000..4cc21c93233c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/amplifiers/adi,adl8113.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices ADL8113 Low Noise Amplifier with integrated bypass switches
> +
> +maintainers:
> + - Antoniu Miclaus <antoniu.miclaus@analog.com>
> +
> +description: |
> + The ADL8113 is a 10MHz to 12GHz Low Noise Amplifier with integrated bypass
> + switches controlled by two GPIO pins (VA and VB). The device supports four
> + operation modes:
> + - Internal Amplifier: VA=0, VB=0 - Signal passes through the internal LNA
> + - Internal Bypass: VA=1, VB=1 - Signal bypasses through internal path
> + - External Bypass A: VA=0, VB=1 - Signal routes through external bypass path A
> + - External Bypass B: VA=1, VB=0 - Signal routes through external bypass path B
These two external paths are a problem for description because there could be
literally anything between those OUT_A and IN_A etc. To be useful it might be necessary
to describe that circuitry.
> +
> + https://www.analog.com/en/products/adl8113.html
> +
> +properties:
> + compatible:
> + const: adi,adl8113
> +
> + vdd1-supply: true
> +
> + vdd2-supply: true
> +
> + vss2-supply: true
> +
> + va-gpios:
> + description:
> + GPIO connected to the VA control pin. Must be specified as GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + vb-gpios:
> + description:
> + GPIO connected to the VB control pin. Must be specified as GPIO_ACTIVE_HIGH.
> + maxItems: 1
> +
> + adi,initial-mode:
> + description: |
> + Initial operation mode after device initialization
> + 0 - Internal Amplifier (default)
> + 1 - Internal Bypass
> + 2 - External Bypass A
> + 3 - External Bypass B
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [0, 1, 2, 3]
> + default: 0
Given this only takes affect when the driver loads anyway, why have
an initial mode in DT?
> +
> +required:
> + - compatible
> + - va-gpios
> + - vb-gpios
> + - vdd1-supply
> + - vdd2-supply
> + - vss2-supply
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> + amplifier {
> + compatible = "adi,adl8113";
> + va-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
> + vb-gpios = <&gpio 23 GPIO_ACTIVE_HIGH>;
> + vdd1-supply = <&vdd1_5v>;
> + vdd2-supply = <&vdd2_3v3>;
> + vss2-supply = <&vss2_neg>;
> + adi,initial-mode = <0>;
> + };
> +...
On Sun, Nov 02, 2025 at 10:57:11AM +0000, Jonathan Cameron wrote: > On Fri, 31 Oct 2025 16:04:03 +0000 > Antoniu Miclaus <antoniu.miclaus@analog.com> wrote: > > > Add devicetree bindings for adl8113. > > > > Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> > > --- > > .../bindings/iio/amplifiers/adi,adl8113.yaml | 76 +++++++++++++++++++ > > 1 file changed, 76 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml > > > > diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml > > new file mode 100644 > > index 000000000000..4cc21c93233c > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,adl8113.yaml > > @@ -0,0 +1,76 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > > +%YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/iio/amplifiers/adi,adl8113.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Analog Devices ADL8113 Low Noise Amplifier with integrated bypass switches > > + > > +maintainers: > > + - Antoniu Miclaus <antoniu.miclaus@analog.com> > > + > > +description: | > > + The ADL8113 is a 10MHz to 12GHz Low Noise Amplifier with integrated bypass > > + switches controlled by two GPIO pins (VA and VB). The device supports four > > + operation modes: > > + - Internal Amplifier: VA=0, VB=0 - Signal passes through the internal LNA > > + - Internal Bypass: VA=1, VB=1 - Signal bypasses through internal path > > + - External Bypass A: VA=0, VB=1 - Signal routes through external bypass path A > > + - External Bypass B: VA=1, VB=0 - Signal routes through external bypass path B > > These two external paths are a problem for description because there could be > literally anything between those OUT_A and IN_A etc. To be useful it might be necessary > to describe that circuitry. > > > + > > + https://www.analog.com/en/products/adl8113.html > > + > > +properties: > > + compatible: > > + const: adi,adl8113 > > + > > + vdd1-supply: true > > + > > + vdd2-supply: true > > + > > + vss2-supply: true > > + > > + va-gpios: > > + description: > > + GPIO connected to the VA control pin. Must be specified as GPIO_ACTIVE_HIGH. > > + maxItems: 1 > > + > > + vb-gpios: > > + description: > > + GPIO connected to the VB control pin. Must be specified as GPIO_ACTIVE_HIGH. > > + maxItems: 1 > > + > > + adi,initial-mode: > > + description: | > > + Initial operation mode after device initialization > > + 0 - Internal Amplifier (default) > > + 1 - Internal Bypass > > + 2 - External Bypass A > > + 3 - External Bypass B > > + $ref: /schemas/types.yaml#/definitions/uint32 > > + enum: [0, 1, 2, 3] > > + default: 0 > > Given this only takes affect when the driver loads anyway, why have > an initial mode in DT? And if it is to be kept, I would like the modes to become strings, not "random" integers. Although, as you say, feels like something software could just control
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