linux-kernel - Re: [PATCH] dt-bindings: watchdog: Convert marvell,armada-3700-wdt to DT schema

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Message-ID: <14ed9b3b-92a7-453f-a585-858e9f2ea37a@roeck-us.net>
Date: Tue, 12 Aug 2025 14:11:55 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: "Rob Herring (Arm)" <robh@...nel.org>,
 Wim Van Sebroeck <wim@...ux-watchdog.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Marek Behún <kabel@...nel.org>
Cc: linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: watchdog: Convert marvell,armada-3700-wdt to
 DT schema

On 8/12/25 13:32, Rob Herring (Arm) wrote:
> Convert the Marvell Armada 3700 watchdog binding to DT schema format.
> It's a straight-forward conversion.
> 
> Signed-off-by: Rob Herring (Arm) <robh@...nel.org>

Acked-by: Guenter Roeck <linux@...ck-us.net>

> ---
>   .../bindings/watchdog/armada-37xx-wdt.txt     | 23 -----------
>   .../watchdog/marvell,armada-3700-wdt.yaml     | 41 +++++++++++++++++++
>   MAINTAINERS                                   |  2 +-
>   3 files changed, 42 insertions(+), 24 deletions(-)
>   delete mode 100644 Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
>   create mode 100644 Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
> 
> diff --git a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt b/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
> deleted file mode 100644
> index a8d00c31a1d8..000000000000
> --- a/Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
> +++ /dev/null
> @@ -1,23 +0,0 @@
> -* Armada 37xx CPU Watchdog Timer Controller
> -
> -Required properties:
> -- compatible : must be "marvell,armada-3700-wdt"
> -- reg : base physical address of the controller and length of memory mapped
> -	region.
> -- clocks : the clock feeding the watchdog timer. See clock-bindings.txt
> -- marvell,system-controller : reference to syscon node for the CPU Miscellaneous
> -	Registers
> -
> -Example:
> -
> -	cpu_misc: system-controller@...0 {
> -		compatible = "marvell,armada-3700-cpu-misc", "syscon";
> -		reg = <0xd000 0x1000>;
> -	};
> -
> -	wdt: watchdog@...0 {
> -		compatible = "marvell,armada-3700-wdt";
> -		reg = <0x8300 0x40>;
> -		marvell,system-controller = <&cpu_misc>;
> -		clocks = <&xtalclk>;
> -	};
> diff --git a/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml b/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
> new file mode 100644
> index 000000000000..60d44d642fb5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
> @@ -0,0 +1,41 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/watchdog/marvell,armada-3700-wdt.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Armada 37xx CPU Watchdog Timer Controller
> +
> +maintainers:
> +  - Marek Behún <kabel@...nel.org>
> +
> +properties:
> +  compatible:
> +    const: marvell,armada-3700-wdt
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  marvell,system-controller:
> +    description: Reference to syscon node for the CPU Miscellaneous Registers
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - marvell,system-controller
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    watchdog@...0 {
> +        compatible = "marvell,armada-3700-wdt";
> +        reg = <0x8300 0x40>;
> +        marvell,system-controller = <&cpu_misc>;
> +        clocks = <&xtalclk>;
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 06a4cde222bd..6a2de9638c08 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2623,7 +2623,7 @@ F:	Documentation/devicetree/bindings/firmware/cznic,turris-mox-rwtm.txt
>   F:	Documentation/devicetree/bindings/firmware/cznic,turris-omnia-mcu.yaml
>   F:	Documentation/devicetree/bindings/interrupt-controller/marvell,mpic.yaml
>   F:	Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml
> -F:	Documentation/devicetree/bindings/watchdog/armada-37xx-wdt.txt
> +F:	Documentation/devicetree/bindings/watchdog/marvell,armada-3700-wdt.yaml
>   F:	drivers/bus/moxtet.c
>   F:	drivers/firmware/turris-mox-rwtm.c
>   F:	drivers/gpio/gpio-moxtet.c