linux-kernel - Re: [PATCH v2 2/3] arm64: dts: ti: k3-{j784s4-j742s2/j721s2}-mcu-wakeup: Add HSM M4F node

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Message-ID: <20260113162927.hmf5dnkm44kyefpt@stained>
Date: Tue, 13 Jan 2026 10:29:27 -0600
From: Nishanth Menon <nm@...com>
To: "Padhi, Beleswar" <b-padhi@...com>
CC: <andersson@...nel.org>, <mathieu.poirier@...aro.org>, <robh@...nel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <vigneshr@...com>,
	<kristo@...nel.org>, <afd@...com>, <u-kumar1@...com>, <hnagalla@...com>,
	<linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 2/3] arm64: dts: ti:
 k3-{j784s4-j742s2/j721s2}-mcu-wakeup: Add HSM M4F node

On 21:34-20260113, Padhi, Beleswar wrote:
[...]

> > > +		reg-names = "sram0_0", "sram0_1", "sram1";
> > > +		resets = <&k3_reset 304 1>;
> > > +		firmware-name = "hsm.bin";
> > I am not a fan of putting firmware-name in SoC.dtsi - esp when it is
> > reserved,
> 
> 
> I thought the opposite way. Since it is reserved (and not a general purpose
> remote core), it is unlikely boards out there are going to use a separate

Fair enough.. I see that the base firmware name is in SoC.dtsi on a per
SoC basis. Agreed that exception can be an override if required
(unlikely in this case). Please document that rationale in the commit
message.

Since we just have a single HSM in each of the SoCs, am62p-hsm-m4f-fw
j722s-hsm-m4f-fw etc in SoC.dtsi would make sense.. just dont do a
generic hsm.bin kind of deal.


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