linux-kernel - Re: [PATCH v3] arm64: dts: ti: Fix the number of common watchdog instances between J784S4 and J742S2

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Message-ID: <20260109143728.pt6vqt25sylmm4zs@frown>
Date: Fri, 9 Jan 2026 08:37:28 -0600
From: Nishanth Menon <nm@...com>
To: Abhash Kumar Jha <a-kumar2@...com>
CC: <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
	<conor+dt@...nel.org>, <krzk+dt@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <u-kumar1@...com>, <p-mantena@...com>,
	<m-chawdhry@...com>
Subject: Re: [PATCH v3] arm64: dts: ti: Fix the number of common watchdog
 instances between J784S4 and J742S2

Few suggestions:

$subject
arm64: dts: ti: k3-j784s4-j742s2-main-common.dtsi: Refactor watchdog instances for j784s4

On 14:23-20260108, Abhash Kumar Jha wrote:
> Each A72 core has one watchdog instance associated with it. Since J742S2
> has 4 A72 cores, it is incorrect to have 8 watchdog instances in the
> j742s2-j784s4 common file.

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.

> 
> Remove the last 4 extra watchdogs from the common file and add them only
> for J784S4 which has 8 A72 cores and thus 8 watchdog instances
> associated with them.

Refactor the last 4 watchdogs from the common file to J784S4-specific
file, as J784S4 has 8 A72 cores and thus hardware definition requires
8 watchdog instances.

Additionally, if there is user-visible breakage seen on j742s2, will be good to
mention that as well.

> 
> Fixes: 9cc161a4509c ("arm64: dts: ti: Refactor J784s4 SoC files to a common file")
> Signed-off-by: Abhash Kumar Jha <a-kumar2@...com>
> ---

[...]

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D
https://ti.com/opensource