linux-kernel - Re: [PATCH v7 5/7] arm64: dts: ti: k3-j784s4-mcu: Add the mcu domain watchdog instances

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20231006114422.avymeap7h5ocs6zq@dreadlock>
Date:   Fri, 6 Oct 2023 06:44:22 -0500
From:   Nishanth Menon <nm@...com>
To:     Keerthy <j-keerthy@...com>
CC:     <robh+dt@...nel.org>, <vigneshr@...com>, <conor+dt@...nel.org>,
        <kristo@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <u-kumar1@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 5/7] arm64: dts: ti: k3-j784s4-mcu: Add the mcu domain
 watchdog instances

> > +	mcu_watchdog1: watchdog@...10000 {
> > +		compatible = "ti,j7-rti-wdt";
> > +		reg = <0x00 0x40610000 0x00 0x100>;
> > +		clocks = <&k3_clks 368 1>;
> > +		power-domains = <&k3_pds 368 TI_SCI_PD_EXCLUSIVE>;
> > +		assigned-clocks = <&k3_clks 368 0>;
> > +		assigned-clock-parents = <&k3_clks 368 4>;
> 
> Please DONOT ignore the review comments - I did ask the documentation in
> dts as well. reason being that this is what people will see rather than
> dig up the commit log. it should be intutive when reading the dts why
> nodes are disabled by default Vs the standard of leaving it enabled by
> default. Given esp that these peripherals do not have anything to do
> with board semantics (pinmux or something similar) to be complete.
> 
> > +		status = "disabled";

Just providing clarifying comment - something like this is probably more
appropriate:

/* Tightly coupled to R5F */
status = "reserved";

The rti needs to be handled by R5F and is reserved for firmware usage.

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