[PATCH v2 2/4] dt-bindings: iio: adc: adi,ade9000: add adi,ade9039 compatible

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

The ADE9039 is a polyphase energy metering device from the same family as
the ADE9000. It is register compatible with the ADE9000 for everything the
driver uses, provides the same on-chip dip/swell detection, and shares the
full-scale codes of the ADE9078.

It is deliberately not given a fallback to adi,ade9000: the ADE9039
computes only fundamental reactive power and has no total reactive power
register, so a driver matching on adi,ade9000 would expose total reactive
power channels backed by a register the part does not implement. The
difference is noted in the description.

Like the ADE9078 it supports a maximum serial clock frequency of 10 MHz
rather than 20 MHz, so extend the existing spi-max-frequency constraint to
cover it.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
---
Changes in v2:
 - Spell out in the commit message why a fallback to adi,ade9000 is not
   usable for this part.
 - List the ADE9039 in numeric part order in the title, the description
   and the datasheet links.

 .../bindings/iio/adc/adi,ade9000.yaml         | 29 +++++++++++--------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
index bcc166aad713..580ced2730bc 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
@@ -5,24 +5,26 @@
 $id: http://devicetree.org/schemas/iio/adc/adi,ade9000.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Analog Devices ADE9000/ADE9078/ADE9430 High Performance, Polyphase Energy Metering
+title: Analog Devices ADE9000/ADE9039/ADE9078/ADE9430 High Performance, Polyphase Energy Metering
 
 maintainers:
   - Antoniu Miclaus <antoniu.miclaus@analog.com>
 
 description: |
-  The ADE9000, ADE9078 and ADE9430 are highly accurate, fully integrated,
-  multiphase energy and power quality monitoring devices. Superior analog
-  performance and a digital signal processing (DSP) core enable accurate energy
-  monitoring over a wide dynamic range. An integrated high end reference ensures
-  low drift over temperature with a combined drift of less than ±25 ppm/°C
-  maximum for the entire channel including a programmable gain amplifier (PGA)
-  and an analog-to-digital converter (ADC). The ADE9078 and ADE9430 do not
-  provide the on-chip dip/swell detection available on the ADE9000, and the
-  ADE9430 has no on-chip digital integrator (it uses an external analog
-  integrator for Rogowski coils).
+  The ADE9000, ADE9039, ADE9078 and ADE9430 are highly accurate, fully
+  integrated, multiphase energy and power quality monitoring devices. Superior
+  analog performance and a digital signal processing (DSP) core enable accurate
+  energy monitoring over a wide dynamic range. An integrated high end reference
+  ensures low drift over temperature with a combined drift of less than
+  ±25 ppm/°C maximum for the entire channel including a programmable gain
+  amplifier (PGA) and an analog-to-digital converter (ADC). The ADE9078 and
+  ADE9430 do not provide the on-chip dip/swell detection available on the
+  ADE9000 and the ADE9039, and the ADE9430 has no on-chip digital integrator
+  (it uses an external analog integrator for Rogowski coils). The ADE9039 only
+  computes fundamental reactive power and has no total reactive power register.
 
   https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9000.pdf
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9039.pdf
   https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9078.pdf
   https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9430.pdf
 
@@ -32,6 +34,7 @@ properties:
   compatible:
     enum:
       - adi,ade9000
+      - adi,ade9039
       - adi,ade9078
       - adi,ade9430
 
@@ -79,7 +82,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: adi,ade9078
+            enum:
+              - adi,ade9039
+              - adi,ade9078
     then:
       properties:
         spi-max-frequency:
-- 
2.43.0