[PATCH 2/4] dt-bindings: iio: adc: adi,ade9000: add adi,ade9078 compatible

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

The ADE9078 is a polyphase energy metering device from the same family as
the ADE9000. It is register-compatible with the ADE9000 but does not
provide the on-chip dip/swell detection and is limited to a 10 MHz SPI
clock.

Add the new compatible along with a conditional constraint lowering the
maximum spi-max-frequency for the ADE9078.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
 .../bindings/iio/adc/adi,ade9000.yaml         | 30 ++++++++++++++-----
 1 file changed, 22 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
index f22eba0250ee..1e940e8c7297 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ade9000.yaml
@@ -5,21 +5,23 @@
 $id: http://devicetree.org/schemas/iio/adc/adi,ade9000.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Analog Devices ADE9000 High Performance, Polyphase Energy Metering
+title: Analog Devices ADE9000/ADE9078 High Performance, Polyphase Energy Metering
 
 maintainers:
   - Antoniu Miclaus <antoniu.miclaus@analog.com>
 
 description: |
-  The ADE9000 is a highly accurate, fully integrated, multiphase energy and power
-  quality monitoring device. 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 ADE9000 and ADE9078 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 does not provide the on-chip
+  dip/swell detection available on the ADE9000.
 
   https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9000.pdf
+  https://www.analog.com/media/en/technical-documentation/data-sheets/ADE9078.pdf
 
 $ref: /schemas/spi/spi-peripheral-props.yaml#
 
@@ -27,6 +29,7 @@ properties:
   compatible:
     enum:
       - adi,ade9000
+      - adi,ade9078
 
   reg:
     maxItems: 1
@@ -67,6 +70,17 @@ required:
   - reg
   - vdd-supply
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: adi,ade9078
+    then:
+      properties:
+        spi-max-frequency:
+          maximum: 10000000
+
 unevaluatedProperties: false
 
 examples:
-- 
2.43.0