[PATCH v2] dt-bindings: rtc: pcf85063: Add NXP PCA85074A

[PATCH v2] dt-bindings: rtc: pcf85063: Add NXP PCA85074A

[Rodrigo Rea]

From: Rodrigo Rea <rodrigo.rea@nxp.com>

Document the NXP PCA85074A real-time clock with nxp,pca85073a as a
fallback compatible. Both devices have the same register layout for
clock, calendar, alarm, offset, RAM and timer functions, allowing the
existing PCA85073A driver support to be used without a new match entry.

Link: https://www.nxp.com/docs/en/data-sheet/PCA85074A.pdf
Signed-off-by: Rodrigo Rea <rodrigo.rea@nxp.com>
---
Changes in v2:
- Require nxp,pca85073a as the fallback compatible, as requested by
  Conor Dooley.
- Drop the driver patch: the existing fallback match provides DT support.
- No runtime test of the new fallback DT has been performed.

Link to v1:
https://lore.kernel.org/20261105215204.2446733-1-rodrigo.rea@marsrover.mx/

 .../devicetree/bindings/rtc/nxp,pcf85063.yaml  | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
index f7013cd8f..8ce965caf 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
@@ -11,13 +11,17 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - microcrystal,rv8063
-      - microcrystal,rv8263
-      - nxp,pcf85063
-      - nxp,pcf85063a
-      - nxp,pcf85063tp
-      - nxp,pca85073a
+    oneOf:
+      - enum:
+          - microcrystal,rv8063
+          - microcrystal,rv8263
+          - nxp,pcf85063
+          - nxp,pcf85063a
+          - nxp,pcf85063tp
+          - nxp,pca85073a
+      - items:
+          - const: nxp,pca85074a
+          - const: nxp,pca85073a
 
   reg:
     maxItems: 1

base-commit: 05441d697f7f9a927264f4058cbbc6a03dfcac9d
-- 
2.56.0

Re: [PATCH v2] dt-bindings: rtc: pcf85063: Add NXP PCA85074A

[Krzysztof Kozlowski]

On Mon, Nov 09, 2026 at 03:24:02PM +0000, Rodrigo Rea wrote:
> From: Rodrigo Rea <rodrigo.rea@nxp.com>
> 
> Document the NXP PCA85074A real-time clock with nxp,pca85073a as a
> fallback compatible. Both devices have the same register layout for
> clock, calendar, alarm, offset, RAM and timer functions, allowing the
> existing PCA85073A driver support to be used without a new match entry.
> 
> Link: https://www.nxp.com/docs/en/data-sheet/PCA85074A.pdf
> Signed-off-by: Rodrigo Rea <rodrigo.rea@nxp.com>
> ---
> Changes in v2:
> - Require nxp,pca85073a as the fallback compatible, as requested by
>   Conor Dooley.
> - Drop the driver patch: the existing fallback match provides DT support.
> - No runtime test of the new fallback DT has been performed.
> 
> Link to v1:
> https://lore.kernel.org/20261105215204.2446733-1-rodrigo.rea@marsrover.mx/
> 
>  .../devicetree/bindings/rtc/nxp,pcf85063.yaml  | 18 +++++++++++-------
>  1 file changed, 11 insertions(+), 7 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>

Best regards,
Krzysztof