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Wysocki" , Viresh Kumar , Linus Walleij , Wim Van Sebroeck , Guenter Roeck , Catalin Marinas , Will Deacon , Lorenzo Pieralisi , Mark Kettenis , asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-gpio@vger.kernel.org, linux-watchdog@vger.kernel.org Cc: Nick Chan , Ivaylo Ivanov , Konrad Dybcio Subject: [PATCH v2 21/22] arm64: dts: apple: t8010: Add cpufreq nodes Date: Sat, 14 Sep 2024 13:17:30 +0800 Message-ID: <20240914052413.68177-25-towinchenmi@gmail.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240914052413.68177-1-towinchenmi@gmail.com> References: <20240914052413.68177-1-towinchenmi@gmail.com> Precedence: bulk X-Mailing-List: linux-watchdog@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add cpufreq nodes for the A10 SoC. The Apple iPod touch 7 can only go up to 1.64 GHz, so the higher operating points are in t8010-fast.dtsi. A10 consists of logical cores that switches between E-mode and P-mode depending on the current p-state. Each mode have different capacities so the E-mode frequencies are adjusted to make performance scale linearly with clock speed. Signed-off-by: Nick Chan --- arch/arm64/boot/dts/apple/t8010-fast.dtsi | 22 ++++++++ arch/arm64/boot/dts/apple/t8010.dtsi | 67 +++++++++++++++++++++++ 2 files changed, 89 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t8010-fast.dtsi b/arch/arm64/boot/dts/apple/t8010-fast.dtsi index 4bdf1c3eccfe..b5a2c78ca9e9 100644 --- a/arch/arm64/boot/dts/apple/t8010-fast.dtsi +++ b/arch/arm64/boot/dts/apple/t8010-fast.dtsi @@ -6,3 +6,25 @@ */ #include "t8010.dtsi" + +/ { + opp: opp-table { + opp08 { + opp-hz = /bits/ 64 <1944000000>; + opp-level = <8>; + opp-microvolt = <816000>; + }; + + opp09 { + opp-hz = /bits/ 64 <2244000000>; + opp-level = <9>; + opp-microvolt = <922000>; + }; + + opp10 { + opp-hz = /bits/ 64 <2340000000>; + opp-level = <10>; + opp-microvolt = <922000>; + }; + }; +}; diff --git a/arch/arm64/boot/dts/apple/t8010.dtsi b/arch/arm64/boot/dts/apple/t8010.dtsi index 926a0f501477..e27d2b5e3df1 100644 --- a/arch/arm64/boot/dts/apple/t8010.dtsi +++ b/arch/arm64/boot/dts/apple/t8010.dtsi @@ -50,6 +50,8 @@ cpu0: cpu@0 { compatible = "apple,hurricane-zephyr"; reg = <0x0 0x0>; cpu-release-addr = <0 0>; /* To be filled by loader */ + operating-points-v2 = <&opp>; + performance-domains = <&cpufreq>; enable-method = "spin-table"; device_type = "cpu"; }; @@ -58,11 +60,70 @@ cpu1: cpu@1 { compatible = "apple,hurricane-zephyr"; reg = <0x0 0x1>; cpu-release-addr = <0 0>; /* To be filled by loader */ + operating-points-v2 = <&opp>; + performance-domains = <&cpufreq>; enable-method = "spin-table"; device_type = "cpu"; }; }; + opp: opp-table { + compatible = "operating-points-v2"; + + /* + * The E-core frequencies are adjusted so performance scales + * linearly with reported clock speed. + */ + + opp01 { + opp-hz = /bits/ 64 <149000000>; /* 396 MHz, E-core */ + opp-level = <1>; + opp-microvolt = <525000>; + }; + + opp02 { + opp-hz = /bits/ 64 <275000000>; /* 732 MHz, E-core */ + opp-level = <2>; + opp-microvolt = <541000>; + }; + + opp03 { + opp-hz = /bits/ 64 <410000000>; /* 1092 MHz, E-core */ + opp-level = <3>; + opp-microvolt = <603000>; + }; + + /* The following operating points are handled by the P-cores */ + opp04 { + opp-hz = /bits/ 64 <756000000>; + opp-level = <4>; + opp-microvolt = <559000>; + }; + + opp05 { + opp-hz = /bits/ 64 <1056000000>; + opp-level = <5>; + opp-microvolt = <609000>; + }; + + opp06 { + opp-hz = /bits/ 64 <1356000000>; + opp-level = <6>; + opp-microvolt = <650000>; + }; + + opp07 { + opp-hz = /bits/ 64 <1644000000>; + opp-level = <7>; + opp-microvolt = <725000>; + }; + + /* + * The iPod touch 7 supports up to 1.6 GHz, faster operating + * points for other devices are in t8010-fast.dtsi + */ + }; + memory@800000000 { device_type = "memory"; reg = <0x8 0 0 0>; /* To be filled by loader */ @@ -86,6 +147,12 @@ soc { nonposted-mmio; ranges; + cpufreq: performance-controller@202f20000 { + compatible = "apple,t8010-cluster-cpufreq", "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq"; + reg = <0x2 0x2f20000 0 0x1000>; + #performance-domain-cells = <0>; + }; + serial0: serial@20a0c0000 { compatible = "apple,s5l-uart"; reg = <0x2 0x0a0c0000 0x0 0x4000>;