From: Hector Martin <marcan@marcan.st>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Sven Peter <sven@svenpeter.dev>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Stephen Boyd <sboyd@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Marc Zyngier <maz@kernel.org>,
Mark Kettenis <mark.kettenis@xs4all.nl>,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 4/5] cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states
Date: Mon, 14 Nov 2022 20:06:50 +0900 [thread overview]
Message-ID: <8c7b25f0-aee2-c3ee-c6da-3432b6513c57@marcan.st> (raw)
In-Reply-To: <20221114070323.gjwgllfd44hthwon@vireshk-i7>
For the benefit of everyone else: I screwed up a reply from mobile and
ended up with a brief exchange offline, but here's the useful part of
the context. Viresh also pointed out dropping opp-shared if we don't use
that mechanism, so I'll do that for v4.
On 14/11/2022 16.03, Viresh Kumar wrote:
> On 14-11-22, 15:57, Hector Martin wrote:
>> There is no way to express this relationship with OPP tables without
>> duplicating the tables themselves.
>
> Can you show how the DT looks in this case ? I am still not clear on what the
> scenario is here :(
Here's the most complicated one we have so far: 20 cores and 6 clusters
sharing 2 OPP tables (mind the include and define fun - this is the best
way we could come up with to express two SoC dies glued together into
one MCM).
https://github.com/AsahiLinux/linux/blob/asahi-wip/arch/arm64/boot/dts/apple/t6002.dtsi
- Hector
next prev parent reply other threads:[~2022-11-14 11:07 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-24 4:39 [PATCH v3 0/5] Apple SoC cpufreq driver Hector Martin
2022-10-24 4:39 ` [PATCH v3 1/5] MAINTAINERS: Add entries for " Hector Martin
2022-10-24 4:39 ` [PATCH v3 2/5] dt-bindings: cpufreq: apple,soc-cpufreq: Add binding for Apple SoC cpufreq Hector Martin
2022-10-25 16:01 ` Krzysztof Kozlowski
2022-10-25 17:22 ` Hector Martin
2022-10-25 18:56 ` Krzysztof Kozlowski
2022-10-26 4:18 ` Hector Martin
2022-10-26 14:13 ` Krzysztof Kozlowski
2022-10-25 23:12 ` Rob Herring
2022-10-26 4:26 ` Hector Martin
2022-10-24 4:39 ` [PATCH v3 3/5] cpufreq: Generalize of_perf_domain_get_sharing_cpumask phandle format Hector Martin
2022-11-02 5:37 ` Viresh Kumar
2022-10-24 4:39 ` [PATCH v3 4/5] cpufreq: apple-soc: Add new driver to control Apple SoC CPU P-states Hector Martin
2022-10-24 8:27 ` Marc Zyngier
2022-11-09 12:13 ` Hector Martin
2022-11-09 14:20 ` Marc Zyngier
2022-11-09 15:39 ` Hector Martin
2022-11-01 15:16 ` Ulf Hansson
2022-11-01 18:17 ` Hector Martin
2022-11-14 19:49 ` Ulf Hansson
2022-11-02 6:18 ` Viresh Kumar
2022-11-09 12:36 ` Hector Martin
2022-11-14 6:51 ` Viresh Kumar
2022-11-14 6:57 ` Hector Martin
2022-11-14 7:03 ` Viresh Kumar
2022-11-14 11:06 ` Hector Martin [this message]
2022-10-24 4:39 ` [PATCH v3 5/5] arm64: dts: apple: Add CPU topology & cpufreq nodes for t8103 Hector Martin
2022-10-25 16:02 ` Krzysztof Kozlowski
2022-10-24 8:28 ` [PATCH v3 0/5] Apple SoC cpufreq driver Marc Zyngier
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