[PATCH v1] arm64: dts: nuvoton: drop unused syscon property from watchdog node

[PATCH v1] arm64: dts: nuvoton: drop unused syscon property from watchdog node

[Tomer Maimon]

The NPCM8XX DTSI currently includes a 'syscon' phandle in the watchdog
node, but this property is not used by any upstream driver and is not
documented in the NPCM watchdog binding. Since it was never reviewed and
does not form part of the DT ABI, it can be safely removed.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
---
 arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
index 24133528b8e9..c781190b42c5 100644
--- a/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
+++ b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
@@ -145,7 +145,6 @@ watchdog0: watchdog@801c {
 				reg = <0x801c 0x4>;
 				status = "disabled";
 				clocks = <&refclk>;
-				syscon = <&gcr>;
 			};
 
 			watchdog1: watchdog@901c {
@@ -154,7 +153,6 @@ watchdog1: watchdog@901c {
 				reg = <0x901c 0x4>;
 				status = "disabled";
 				clocks = <&refclk>;
-				syscon = <&gcr>;
 			};
 
 			watchdog2: watchdog@a01c {
@@ -163,7 +161,6 @@ watchdog2: watchdog@a01c {
 				reg = <0xa01c 0x4>;
 				status = "disabled";
 				clocks = <&refclk>;
-				syscon = <&gcr>;
 			};
 		};
 	};
-- 
2.34.1

Re: [PATCH v1] arm64: dts: nuvoton: drop unused syscon property from watchdog node

[Krzysztof Kozlowski]

On 18/02/2026 19:48, Tomer Maimon wrote:
> The NPCM8XX DTSI currently includes a 'syscon' phandle in the watchdog
> node, but this property is not used by any upstream driver and is not
> documented in the NPCM watchdog binding. Since it was never reviewed and
> does not form part of the DT ABI, it can be safely removed.

"Safely" is not certain or not true, because other users might rely on
that, but that's acceptable impact of undocumented ABI.

However such wording should be avoided, because it creates impression
that it is safe which later might be used by other developers ("but I
saw patch saying it is safe...").

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

> 
> Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
> ---
>  arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> index 24133528b8e9..c781190b42c5 100644
> --- a/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> +++ b/arch/arm64/boot/dts/nuvoton/nuvoton-common-npcm8xx.dtsi
> @@ -145,7 +145,6 @@ watchdog0: watchdog@801c {
>  				reg = <0x801c 0x4>;
>  				status = "disabled";
>  				clocks = <&refclk>;
> -				syscon = <&gcr>;
>  			};
>  
>  			watchdog1: watchdog@901c {
> @@ -154,7 +153,6 @@ watchdog1: watchdog@901c {
>  				reg = <0x901c 0x4>;
>  				status = "disabled";
>  				clocks = <&refclk>;
> -				syscon = <&gcr>;
>  			};
>  
>  			watchdog2: watchdog@a01c {
> @@ -163,7 +161,6 @@ watchdog2: watchdog@a01c {
>  				reg = <0xa01c 0x4>;
>  				status = "disabled";
>  				clocks = <&refclk>;
> -				syscon = <&gcr>;
>  			};
>  		};
>  	};


Best regards,
Krzysztof

Re: [PATCH v1] arm64: dts: nuvoton: drop unused syscon property from watchdog node

[Andrew Jeffery]

On Wed, 18 Feb 2026 20:48:00 +0200, Tomer Maimon wrote:
> The NPCM8XX DTSI currently includes a 'syscon' phandle in the watchdog
> node, but this property is not used by any upstream driver and is not
> documented in the NPCM watchdog binding. Since it was never reviewed and
> does not form part of the DT ABI, it can be safely removed.
> 
> 

Thanks, I've applied this to the BMC tree.

-- 
Andrew Jeffery <andrew@codeconstruct.com.au>