From: Jonas Karlman <jonas@kwiboo.se>
To: "Heiko Stübner" <heiko@sntech.de>, "Chukun Pan" <amadeus@jmu.edu.cn>
Cc: Yao Zi <ziyao@disroot.org>, Lee Jones <lee@kernel.org>,
Rob Herring <robh@kernel.org>, Conor Dooley <conor+dt@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH v2 2/2] arm64: dts: rockchip: Add rk3528 QoS register node
Date: Fri, 7 Mar 2025 00:07:06 +0100 [thread overview]
Message-ID: <7fa480bd-9bc5-4069-a623-afb140455192@kwiboo.se> (raw)
In-Reply-To: <117081043.nniJfEyVGO@diego>
On 2025-03-06 19:08, Heiko Stübner wrote:
> Am Donnerstag, 6. März 2025, 17:55:16 MEZ schrieb Jonas Karlman:
>> Hi Chukun,
>>
>> On 2025-03-06 13:38, Chukun Pan wrote:
>>> The Quality-of-Service (QsS) node stores/restores specific
>>> register contents when the power domains is turned off/on.
>>> Add QoS node so that they can connect to the power domain.
>>>
>>> Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
>>> ---
>>> arch/arm64/boot/dts/rockchip/rk3528.dtsi | 160 +++++++++++++++++++++++
>>> 1 file changed, 160 insertions(+)
>>>
>
>>
>> These QoS node are typically referenced from power domains so that the
>> PMU driver know what QoS to save/restore when a power domain is power
>> cycled.
>>
>> Vendor kernel only reference the two qos_gpu nodes in it's power domains,
>> do you have any documentation or knowledge about what power domain the
>> remaining QoS are related to?
>
> I think the GPU actually is the _only_ fully switchable power-domain on the
> rk3528. The other powerdomains seem to be always on, but can do this
> idle-request thing.
>
> At least that is what I'm reading from the pm-domain definitions in the
> vendor-kernel, combined with a look at the pmu section of the rk3528 TRM.
Thanks for this information.
Regards,
Jonas
>
>
> Heiko
>
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
next prev parent reply other threads:[~2025-03-06 23:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-06 12:38 [PATCH v2 0/2] arm64: dts: rockchip: Add rk3528 QoS register node Chukun Pan
2025-03-06 12:38 ` [PATCH v2 1/2] dt-bindings: mfd: syscon: Add rk3528 QoS register compatible Chukun Pan
2025-03-06 16:32 ` Conor Dooley
2025-03-13 16:56 ` (subset) " Lee Jones
2025-03-06 12:38 ` [PATCH v2 2/2] arm64: dts: rockchip: Add rk3528 QoS register node Chukun Pan
2025-03-06 16:55 ` Jonas Karlman
2025-03-06 18:08 ` Heiko Stübner
2025-03-06 23:07 ` Jonas Karlman [this message]
2025-03-08 17:32 ` [PATCH v2 0/2] " Heiko Stuebner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7fa480bd-9bc5-4069-a623-afb140455192@kwiboo.se \
--to=jonas@kwiboo.se \
--cc=amadeus@jmu.edu.cn \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=heiko@sntech.de \
--cc=krzk+dt@kernel.org \
--cc=lee@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=robh@kernel.org \
--cc=ziyao@disroot.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox