linux-kernel - Re: [PATCH v4 2/2] arm64: dts: ti: k3-j784s4-j742s2-main-common.dtsi: Refactor watchdog instances for j784s4

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Message-ID: <d240b882-a2b6-44d1-870f-b01144cc90bc@ti.com>
Date: Tue, 13 Jan 2026 18:45:02 +0530
From: "Kumar, Udit" <u-kumar1@...com>
To: Abhash Kumar Jha <a-kumar2@...com>, <nm@...com>, <vigneshr@...com>,
	<kristo@...nel.org>, <robh@...nel.org>, <conor+dt@...nel.org>,
	<krzk+dt@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <p-mantena@...com>, <m-chawdhry@...com>,
	<u-kumar1@...com>
Subject: Re: [PATCH v4 2/2] arm64: dts: ti: k3-j784s4-j742s2-main-common.dtsi:
 Refactor watchdog instances for j784s4


On 1/12/2026 2:21 PM, Abhash Kumar Jha wrote:
> Each A72 core has one watchdog instance associated with it. Since j742s2
> has 4 A72 cores, the common file should not define 8 watchdog instances.
>
> Refactor the last 4 extra watchdogs from the common file to j784s4
> specific file, as j784s4 has 8 A72 cores and thus hardware description
> requires 8 watchdog instances.
>
> Fixes: 9cc161a4509c ("arm64: dts: ti: Refactor J784s4 SoC files to a common file")
> Signed-off-by: Abhash Kumar Jha <a-kumar2@...com>
> ---
>   .../dts/ti/k3-j784s4-j742s2-main-common.dtsi  | 36 -------------------
>   arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi    | 36 +++++++++++++++++++
>   2 files changed, 36 insertions(+), 36 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi
> index 9cc0901d58fb..c2636e624f18 100644
> --- a/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-j742s2-main-common.dtsi
> @@ -2378,42 +2378,6 @@ watchdog3: watchdog@...0000 {
>   		assigned-clock-parents = <&k3_clks 351 4>;
>   	};
>   
> -	watchdog4: watchdog@...0000 {
> -		compatible = "ti,j7-rti-wdt";
> -		reg = <0x00 0x2240000 0x00 0x100>;
> -		clocks = <&k3_clks 352 0>;
> -		power-domains = <&k3_pds 352 TI_SCI_PD_EXCLUSIVE>;
> -		assigned-clocks = <&k3_clks 352 0>;
> -		assigned-clock-parents = <&k3_clks 352 4>;
> -	};
> -
> [..]
> diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
> index 5b7830a3c097..78fcd0c40abc 100644
> --- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
> @@ -6,6 +6,42 @@
>    */
>   
>   &cbass_main {
> +	watchdog4: watchdog@...0000 {
> +		compatible = "ti,j7-rti-wdt";
> +		reg = <0x00 0x2240000 0x00 0x100>;
> +		clocks = <&k3_clks 352 0>;
> +		power-domains = <&k3_pds 352 TI_SCI_PD_EXCLUSIVE>;
> +		assigned-clocks = <&k3_clks 352 0>;
> +		assigned-clock-parents = <&k3_clks 352 4>;
> +	};

[..]

For this patch

Reviewed-by: Udit Kumar <u-kumar1@...com>