[PATCH v2] dt-bindings: mfd: ti,bq25703a: Expand to include BQ25798

[PATCH v2] dt-bindings: mfd: ti,bq25703a: Expand to include BQ25798

[Alexey Charkov]

TI has unpublished the BQ25792 charger variant and pulled its docs from
their website.

BQ25798 is a pin and register compatible replacement, which also adds MPPT
tracking support (reg 0x15, added in BQ25798 and reserved in BQ25792) and
backup mode (reg 0x0f[1], reg 0x10[7:6], reg 0x16[0] and reg 0x1c[7:5] on
BQ25798 - all of them reserved on BQ25792).

Expand the existing binding to include BQ25798 with a fallback compatible
to BQ25792.

Link: https://www.ti.com/product/BQ25798
Signed-off-by: Alexey Charkov <alchark@flipper.net>
---
Changes in v2:
- Fixed the conditional to ensure the constraints are applied to ti,bq25798 (Sashiko)
- Link to v1: https://patch.msgid.link/20260914-bq25798-v1-1-dc5e2ec343c4@flipper.net

To: Lee Jones <lee@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Chris Morgan <macromorgan@hotmail.com>
Cc: mfd@lists.linux.dev
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml
index cdce83f05804..3bc07f25d063 100644
--- a/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml
+++ b/Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml
@@ -11,9 +11,14 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - ti,bq25703a
-      - ti,bq25792
+    oneOf:
+      - enum:
+          - ti,bq25703a
+          - ti,bq25792
+      - items:
+          - enum:
+              - ti,bq25798
+          - const: ti,bq25792
 
   reg:
     const: 0x6b
@@ -103,7 +108,8 @@ allOf:
   - if:
       properties:
         compatible:
-          const: ti,bq25792
+          contains:
+            const: ti,bq25792
     then:
       properties:
         input-current-limit-microamp:

---
base-commit: 0d9d0dbf2fddcff5859d623e90ca73c4054276e1
change-id: 20260914-bq25798-67768a40517e

Best regards,
--  
Alexey Charkov <alchark@flipper.net>

Re: [PATCH v2] dt-bindings: mfd: ti,bq25703a: Expand to include BQ25798

[Rob Herring (Arm)]

On Thu, 17 Sep 2026 16:44:39 +0400, Alexey Charkov wrote:
> TI has unpublished the BQ25792 charger variant and pulled its docs from
> their website.
> 
> BQ25798 is a pin and register compatible replacement, which also adds MPPT
> tracking support (reg 0x15, added in BQ25798 and reserved in BQ25792) and
> backup mode (reg 0x0f[1], reg 0x10[7:6], reg 0x16[0] and reg 0x1c[7:5] on
> BQ25798 - all of them reserved on BQ25792).
> 
> Expand the existing binding to include BQ25798 with a fallback compatible
> to BQ25792.
> 
> Link: https://www.ti.com/product/BQ25798
> Signed-off-by: Alexey Charkov <alchark@flipper.net>
> ---
> Changes in v2:
> - Fixed the conditional to ensure the constraints are applied to ti,bq25798 (Sashiko)
> - Link to v1: https://patch.msgid.link/20260914-bq25798-v1-1-dc5e2ec343c4@flipper.net
> 
> To: Lee Jones <lee@kernel.org>
> To: Rob Herring <robh@kernel.org>
> To: Krzysztof Kozlowski <krzk+dt@kernel.org>
> To: Conor Dooley <conor+dt@kernel.org>
> To: Chris Morgan <macromorgan@hotmail.com>
> Cc: mfd@lists.linux.dev
> Cc: devicetree@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> ---
>  Documentation/devicetree/bindings/mfd/ti,bq25703a.yaml | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>