[PATCH v2 12/15] dt-bindings: iio: adc: renesas,rzg2l-adc: Document RZ/G3S SoC

Claudiu
2024-12-06T11:14:16Z

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document the ADC IP available on the RZ/G3S SoC. The ADC IP on the RZ/G3S
differs slightly from the one found on the RZ/G2L. The identified
differences are as follows:
- different number of channels (one being used for temperature conversion);
consequently, various registers differ; the temperature channel
support was not available for the RZ/G2L variant; the #io-channel-cells
property was added to be able to request the temperature channel from
the thermal driver
- different default sampling periods
- the RZ/G3S variant lacks the ADVIC register.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- collected tags

.../bindings/iio/adc/renesas,rzg2l-adc.yaml | 37 +++++++++++++------
1 file changed, 26 insertions(+), 11 deletions(-)

diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
index ba86c7b7d622..40341d541726 100644
--- a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
@@ -17,12 +17,15 @@ description: |

properties:
compatible:
- items:
- - enum:
- - renesas,r9a07g043-adc # RZ/G2UL and RZ/Five
- - renesas,r9a07g044-adc # RZ/G2L
- - renesas,r9a07g054-adc # RZ/V2L
- - const: renesas,rzg2l-adc
+ oneOf:
+ - items:
+ - enum:
+ - renesas,r9a07g043-adc # RZ/G2UL and RZ/Five
+ - renesas,r9a07g044-adc # RZ/G2L
+ - renesas,r9a07g054-adc # RZ/V2L
+ - const: renesas,rzg2l-adc
+ - items:
+ - const: renesas,r9a08g045-adc # RZ/G3S

reg:
maxItems: 1
@@ -57,6 +60,9 @@ properties:
'#size-cells':
const: 0

+ "#io-channel-cells":
+ const: 1
+
required:
- compatible
- reg
@@ -68,7 +74,7 @@ required:
- reset-names

patternProperties:
- "^channel@[0-7]$":
+ "^channel@[0-8]$":
$ref: adc.yaml
type: object
description: |
@@ -78,6 +84,8 @@ patternProperties:
reg:
description: |
The channel number.
+ minimum: 0
+ maximum: 8

required:
- reg
@@ -92,18 +100,25 @@ allOf:
const: renesas,r9a07g043-adc
then:
patternProperties:
- "^channel@[2-7]$": false
+ "^channel@[2-8]$": false
"^channel@[0-1]$":
properties:
reg:
- minimum: 0
maximum: 1
- else:
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,r9a07g044-adc
+ - renesas,r9a07g054-adc
+ then:
patternProperties:
+ "^channel@[8]$": false
"^channel@[0-7]$":
properties:
reg:
- minimum: 0
maximum: 7

additionalProperties: false
--
2.39.2