[PATCH v2 0/2] ADRF5702/ADRF5703 Digital Attenuator support

[PATCH v2 0/2] ADRF5702/ADRF5703 Digital Attenuator support

[Rodrigo Alencar via B4 Relay]

This is a small patch series that adds support for two extra attenuators.
Basically, new chip info and device table entries are added into the
AD8366 IIO driver.

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
Changes in v2:
- Add more context to the dt-bindings commit message.
- Link to v1: https://lore.kernel.org/r/20260325-adrf570x-iio-support-v1-0-9a2685eb2e55@analog.com

---
Rodrigo Alencar (2):
      dt-bindings: iio: amplifiers: ad8366: add adrf5702/3 support
      iio: amplifiers: ad8366: add support for adrf5702/3

 .../bindings/iio/amplifiers/adi,ad8366.yaml        |  4 ++++
 drivers/iio/amplifiers/Kconfig                     |  2 ++
 drivers/iio/amplifiers/ad8366.c                    | 22 ++++++++++++++++++++++
 3 files changed, 28 insertions(+)
---
base-commit: af980a79bfed43c4a0be12cca786be46f1a0c5e8
change-id: 20260325-adrf570x-iio-support-e199418fba40

Best regards,
-- 
Rodrigo Alencar <rodrigo.alencar@analog.com>

[PATCH v2 1/2] dt-bindings: iio: amplifiers: ad8366: add adrf5702/3 support

[Rodrigo Alencar via B4 Relay]

From: Rodrigo Alencar <rodrigo.alencar@analog.com>

Add compatible entries for ADRF5702 and ADRF5703 Digital Attenuators.
ADRF5702 is an 8-bit DSA with a step of 0.125 dB and ADRF5703 is a 7-bit
DSA with a step 0.25 dB. Then, each device ends up with its own gain
range, hence no fallback compatibles are used.

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
 Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
index 2719de1166a1..065637ce33a5 100644
--- a/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
+++ b/Documentation/devicetree/bindings/iio/amplifiers/adi,ad8366.yaml
@@ -20,6 +20,8 @@ properties:
       - adi,ad8366
       - adi,ada4961
       - adi,adl5240
+      - adi,adrf5702
+      - adi,adrf5703
       - adi,adrf5720
       - adi,adrf5730
       - adi,adrf5731
@@ -66,6 +68,8 @@ allOf:
               anyOf:
                 - const: adi,ad8366
                 - const: adi,ada4961
+                - const: adi,adrf5702
+                - const: adi,adrf5703
                 - const: adi,adrf5720
                 - const: adi,adrf5730
                 - const: adi,adrf5731

-- 
2.43.0

[PATCH v2 2/2] iio: amplifiers: ad8366: add support for adrf5702/3

[Rodrigo Alencar via B4 Relay]

From: Rodrigo Alencar <rodrigo.alencar@analog.com>

Add chip info structs and device table entries for ADRF5702 and ADRF5703
Digital Step Attenuators.

Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
 drivers/iio/amplifiers/Kconfig  |  2 ++
 drivers/iio/amplifiers/ad8366.c | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/iio/amplifiers/Kconfig b/drivers/iio/amplifiers/Kconfig
index 39d280d4d437..9e24421b5e97 100644
--- a/drivers/iio/amplifiers/Kconfig
+++ b/drivers/iio/amplifiers/Kconfig
@@ -18,6 +18,8 @@ config AD8366
 	    AD8366 Dual-Digital Variable Gain Amplifier (VGA)
 	    ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
 	    ADL5240 Digitally controlled variable gain amplifier (VGA)
+	    ADRF5702: 0.125 dB LSB, 8-Bit, Silicon Digital Attenuator
+	    ADRF5703: 0.25 dB LSB, 7-Bit, Silicon Digital Attenuator
 	    ADRF5720: 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator
 	    ADRF5730: 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator
 	    ADRF5731: 2 dB LSB, 4-Bit, Silicon Digital Attenuator
diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c
index 334ca91c0f59..bbf41a1fb3a1 100644
--- a/drivers/iio/amplifiers/ad8366.c
+++ b/drivers/iio/amplifiers/ad8366.c
@@ -5,6 +5,8 @@
  *   AD8366 Dual-Digital Variable Gain Amplifier (VGA)
  *   ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
  *   ADL5240 Digitally controlled variable gain amplifier (VGA)
+ *   ADRF5702: 0.125 dB LSB, 8-Bit, Silicon Digital Attenuator, 50 MHz to 20 GHz
+ *   ADRF5703: 0.25 dB LSB, 7-Bit, Silicon Digital Attenuator, 9 kHz to 20 GHz
  *   ADRF5720: 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator, 9 kHz to 40 GHz
  *   ADRF5730: 0.5 dB LSB, 6-Bit, Silicon Digital Attenuator, 100 MHz to 40 GHz
  *   ADRF5731: 2 dB LSB, 4-Bit, Silicon Digital Attenuator, 100 MHz to 40 GHz
@@ -106,6 +108,22 @@ static const struct ad8366_info adl5240_chip_info = {
 	.num_channels = 1,
 };
 
+static const struct ad8366_info adrf5702_chip_info = {
+	.name = "adrf5702",
+	.gain_min = -31875,
+	.gain_max = 0,
+	.gain_step = -125,
+	.num_channels = 1,
+};
+
+static const struct ad8366_info adrf5703_chip_info = {
+	.name = "adrf5703",
+	.gain_min = -31750,
+	.gain_max = 0,
+	.gain_step = -250,
+	.num_channels = 1,
+};
+
 static const struct ad8366_info adrf5720_chip_info = {
 	.name = "adrf5720",
 	.gain_min = -31500,
@@ -337,6 +355,8 @@ static const struct spi_device_id ad8366_id[] = {
 	{ "ad8366", (kernel_ulong_t)&ad8366_chip_info },
 	{ "ada4961", (kernel_ulong_t)&ada4961_chip_info },
 	{ "adl5240", (kernel_ulong_t)&adl5240_chip_info },
+	{ "adrf5702", (kernel_ulong_t)&adrf5702_chip_info },
+	{ "adrf5703", (kernel_ulong_t)&adrf5703_chip_info },
 	{ "adrf5720", (kernel_ulong_t)&adrf5720_chip_info },
 	{ "adrf5730", (kernel_ulong_t)&adrf5730_chip_info },
 	{ "adrf5731", (kernel_ulong_t)&adrf5731_chip_info },
@@ -353,6 +373,8 @@ static const struct of_device_id ad8366_of_match[] = {
 	{ .compatible = "adi,ad8366", .data = &ad8366_chip_info },
 	{ .compatible = "adi,ada4961", .data = &ada4961_chip_info },
 	{ .compatible = "adi,adl5240", .data = &adl5240_chip_info },
+	{ .compatible = "adi,adrf5702", .data = &adrf5702_chip_info },
+	{ .compatible = "adi,adrf5703", .data = &adrf5703_chip_info },
 	{ .compatible = "adi,adrf5720", .data = &adrf5720_chip_info },
 	{ .compatible = "adi,adrf5730", .data = &adrf5730_chip_info },
 	{ .compatible = "adi,adrf5731", .data = &adrf5731_chip_info },

-- 
2.43.0

Re: [PATCH v2 0/2] ADRF5702/ADRF5703 Digital Attenuator support

[Jonathan Cameron]

On Thu, 26 Mar 2026 18:32:15 +0000
Rodrigo Alencar via B4 Relay <devnull+rodrigo.alencar.analog.com@kernel.org> wrote:

> This is a small patch series that adds support for two extra attenuators.
> Basically, new chip info and device table entries are added into the
> AD8366 IIO driver.
> 
> Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
> ---
> Changes in v2:
> - Add more context to the dt-bindings commit message.
> - Link to v1: https://lore.kernel.org/r/20260325-adrf570x-iio-support-v1-0-9a2685eb2e55@analog.com

Given I want to get this a tiny bit of exposure in next (tomorrow hopefully)
prior to sending a pull request on the weekend I've applied this now.

Given how near the top of the tree this is and short window I may well
apply any tags from dt-maintainers etc after applying.

(as background I'm travelling next week so scooping stuff up now)

Thanks,

Jonathan

> 
> ---
> Rodrigo Alencar (2):
>       dt-bindings: iio: amplifiers: ad8366: add adrf5702/3 support
>       iio: amplifiers: ad8366: add support for adrf5702/3
> 
>  .../bindings/iio/amplifiers/adi,ad8366.yaml        |  4 ++++
>  drivers/iio/amplifiers/Kconfig                     |  2 ++
>  drivers/iio/amplifiers/ad8366.c                    | 22 ++++++++++++++++++++++
>  3 files changed, 28 insertions(+)
> ---
> base-commit: af980a79bfed43c4a0be12cca786be46f1a0c5e8
> change-id: 20260325-adrf570x-iio-support-e199418fba40
> 
> Best regards,