linux-kernel - Re: [PATCH v1 -next 0/3] RISC-V: ACPI: Enable CPPC based cpufreq support

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Message-ID: <ZfiKooxO88h1nj35@x1>
Date: Mon, 18 Mar 2024 11:40:34 -0700
From: Drew Fustini <drew@...7.com>
To: Sunil V L <sunilvl@...tanamicro.com>
Cc: linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Andrew Jones <ajones@...tanamicro.com>,
	Atish Kumar Patra <atishp@...osinc.com>,
	Anup Patel <apatel@...tanamicro.com>
Subject: Re: [PATCH v1 -next 0/3] RISC-V: ACPI: Enable CPPC based cpufreq
 support

On Thu, Feb 08, 2024 at 09:14:11AM +0530, Sunil V L wrote:
> This series enables the support for "Collaborative Processor Performance
> Control (CPPC) on ACPI based RISC-V platforms. It depends on the
> encoding of CPPC registers as defined in RISC-V FFH spec [2].
> 
> CPPC is described in the ACPI spec [1]. RISC-V FFH spec required to
> enable this, is available at [2].
> 
> [1] - https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html#collaborative-processor-performance-control
> [2] - https://github.com/riscv-non-isa/riscv-acpi-ffh/releases/download/v1.0.0/riscv-ffh.pdf
> 
> The series is based on the LPI support series.
> Based-on: 20240118062930.245937-1-sunilvl@...tanamicro.com
> (https://lore.kernel.org/lkml/20240118062930.245937-1-sunilvl@ventanamicro.com/)

Should the https://github.com/vlsunil/qemu/tree/lpi_exp branch also be
used for this CPPC series too?

Thanks,
Drew