linux-kernel - Re: [PATCH 1/2] dt-bindings: rng: bcm2835: document reset support

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: <110b59a6-2359-89e1-5f20-7d2e1fd32a2f@gmail.com>
Date:   Tue, 23 Feb 2021 18:22:11 +0100
From:   Álvaro Fernández Rojas <noltari@...il.com>
To:     Scott Branden <scott.branden@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Rob Herring <robh+dt@...nel.org>, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Alexandru Ardelean <alexandru.ardelean@...log.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Lee Jones <lee.jones@...aro.org>,
        Nícolas F. R. A. Prado 
        <nfraprado@...tonmail.com>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>,
        Stefan Wahren <stefan.wahren@...e.com>,
        linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: rng: bcm2835: document reset support

Hello Scott,

El 23/02/2021 a las 18:17, Scott Branden escribió:
> On 2021-02-23 8:36 a.m., Florian Fainelli wrote:
>>
>>
>> On 2/23/2021 8:01 AM, Álvaro Fernández Rojas wrote:
>>> Some devices may need to perform a reset before using the RNG, such as the
>>> BCM6368.
>>>
>>> Signed-off-by: Álvaro Fernández Rojas <noltari@...il.com>
>>
>> Since the reset is unique to the 6368, you may want to make the property
>> mandatory for the 6368 compatible string and optional otherwise.
>>
> Perhaps the reset could be done at an earlier boot stage as well and then the
> reset would even be optional on 6368?
> 

No, this isn't possible on bmips, which is device tree only.
However, it's how is done in bcm63xx, which is why it wasn't needed before.

Best regards,
Álvaro.