linux-kernel - Re: [PATCH v3 0/5] Reserve Timer Nodes to avoid clash with Remoteproc firmware

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: <d682f87e-be8e-4679-9b6b-b37b3f897d9b@ti.com>
Date: Mon, 26 Aug 2024 16:20:15 +0530
From: Beleswar Prasad Padhi <b-padhi@...com>
To: Nishanth Menon <nm@...com>
CC: <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <u-kumar1@...com>,
        <tony@...mide.com>, <bb@...com>, <d-gole@...com>, <afd@...com>,
        <hnagalla@...com>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 0/5] Reserve Timer Nodes to avoid clash with Remoteproc
 firmware


On 24/08/24 23:33, Nishanth Menon wrote:
> On 13:09-20240816, Beleswar Padhi wrote:
>> The remoteproc firmware like of R5F and DSPs in the MAIN voltage domain
>> use timers. At the same time, if Linux probes the timers, some
>> instability is observed while booting remote cores. Therefore, change
>> the status of the timer nodes to "reserved" to avoid any clash.
>>
>> v3: Changelog:
>> * Udit
>> 1) j7200: Updated commit message description to remove DSPs as the SoC does not
>> have one.
>> 2) j722s: Updated the correct commit for "Fixes:" tag which introduced the bug.
>> 3) For entire series, removed comment about timer usage by R5fs in the MCU
>> voltage domain as those are used by Device Manager firmware to get SoC
>> functional.
>>
>> Link to v2:
>> https://lore.kernel.org/all/20240814104151.2038457-1-b-padhi@ti.com/
>>
>> v2: Changelog:
>> - Split the changes into individual patches for each SoC to tag the
>>    correct offending commit for "Fixes:" tag.
>>
>> * Udit
>> 1) Add the correct clashing timer nodes for J7200 SoC.
>> 2) Port these changes to board level dts files instead of SoC level dtsi files.
>>
>> Link to v1:
>> https://lore.kernel.org/all/20240607105559.771080-1-b-padhi@ti.com/
>>
>> Beleswar Padhi (5):
>>    arm64: dts: ti: k3-j7200: Change timer nodes status to reserved
>>    arm64: dts: ti: k3-j721e: Change timer nodes status to reserved
>>    arm64: dts: ti: k3-j721s2: Change timer nodes status to reserved
>>    arm64: dts: ti: k3-j784s4: Change timer nodes status to reserved
>>    arm64: dts: ti: k3-j722s: Change timer nodes status to reserved
> All patches: please fix your $subject. it looked initially like
Thanks for pointing out, fixed this in v4 revision.
> you were fixing the default SoC behavior, but later I realized
> you are fixing the evm solution.
>
> Also while at this make sure the corresponding SK behaviors are in sync
Thanks for catching this. I have included timer changes for SK boards in 
the v4 revision.
> correctly as well. if you think they do not need to be fixed, address
> that comment in the cover-letter.
>
>>   .../dts/ti/k3-j7200-common-proc-board.dts     | 13 ++++++
>>   .../dts/ti/k3-j721e-common-proc-board.dts     | 29 +++++++++++++
>>   .../dts/ti/k3-j721s2-common-proc-board.dts    | 25 +++++++++++
>>   arch/arm64/boot/dts/ti/k3-j722s-evm.dts       | 13 ++++++
>>   arch/arm64/boot/dts/ti/k3-j784s4-evm.dts      | 41 +++++++++++++++++++
>>   5 files changed, 121 insertions(+)
>>
>> -- 
>> 2.34.1
>>