linux-kernel - Re: [PATCH] arm64: dts: ti: k3-j784s4: use ti,j7200-padconf compatible

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: <6e47e420-84c4-4539-ba54-5e1e939a37a5@bootlin.com>
Date: Wed, 4 Dec 2024 10:08:43 +0100
From: Thomas Richard <thomas.richard@...tlin.com>
To: Francesco Dolcini <francesco@...cini.it>, Nishanth Menon <nm@...com>,
 Vignesh Raghavendra <vigneshr@...com>, u-kumar1@...com
Cc: Tero Kristo <kristo@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, linux-arm-kernel@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 gregory.clement@...tlin.com, thomas.petazzoni@...tlin.com,
 richard.genoud@...tlin.com
Subject: Re: [PATCH] arm64: dts: ti: k3-j784s4: use ti,j7200-padconf
 compatible

On 11/19/24 20:01, Francesco Dolcini wrote:
> Hello Thomas and TI folks,
> 
> On Wed, Nov 13, 2024 at 11:43:05AM +0100, Thomas Richard wrote:
>> Like on j7200, pinctrl contexts shall be saved and restored during
>> suspend-to-ram.
>>
>> So use ti,j7200-padconf compatible.
>>
>> Signed-off-by: Thomas Richard <thomas.richard@...tlin.com>
>> ---
>> Use ti,j7200-padconf compatible to save and restore pinctrl contexts during
>> suspend-to-ram.
>> ---
>>  arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi       |  6 +++---
>>  arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi | 12 ++++++------
> 
> Do j784s4 supports any kind of low power mode and/or suspend to ram? My
> understanding was that this was not supported, but maybe there is some
> details that was lost when I was told this information.

Hello Francesco,

We are working on suspend-to-ram support for j7200 and j784s4.
During suspend-to-ram the SoC is fully powered-off (thanks to the PMIC
which powers off all the power rails except the DDR which is in
self-refresh), like on j7200.
Please let me know if you want more details.

Regards,

Thomas