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Thu, 29 Oct 2026 18:44:19 -0700 (PDT) Received: from at-Standard-PC-Q35-ICH9-2009 ([106.202.112.166]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36a42a96172sm2381425eec.27.2026.10.29.18.44.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Oct 2026 18:44:18 -0700 (PDT) From: Atharva Tiwari To: rafael@kernel.org Cc: atharvatiwarilinuxdev@gmail.com, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH RESEND] ACPI: processor: Use Apple-specific methods for P/C-states Date: Thu, 29 Oct 2026 21:44:12 -0400 Message-ID: <20261030014412.1652-1-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: References: X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > You haven't provided a motivation for the change and I know nothing > about Apple platforms, sorry. APSS provides more P-states than _PSS on apple macs, for example on MacBookPro11,3 _PSS provides 17 P-states ranging from 800Mhz to 2301 Mhz, while APSS provides 28 P-states ranging from 800Mhz to 3500 Mhz Same with ACST, on Xserve3,1 _CST provides 2 C-states (C1, C6) while ACST provides 3 C-states (C1, C2, C6). This is also used in older macs only (before 2015). And also macOS uses these.