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Thu, 20 Feb 2025 04:22:42 -0800 (PST) From: Nick Chan Date: Thu, 20 Feb 2025 20:21:47 +0800 Subject: [PATCH 6/9] arm64: dts: apple: t8010: Add CPU caches Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250220-caches-v1-6-2c7011097768@gmail.com> References: <20250220-caches-v1-0-2c7011097768@gmail.com> In-Reply-To: <20250220-caches-v1-0-2c7011097768@gmail.com> To: Sven Peter , Janne Grunau , Alyssa Rosenzweig , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nick Chan X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1352; i=towinchenmi@gmail.com; h=from:subject:message-id; bh=Dfmhksd4L1Rm6h/PJVjQgqmA7UT/Za+zMY19qrFBfHE=; b=owEBbQKS/ZANAwAIAQHKCLemxQgkAcsmYgBntx5+wn0P0SXuQNu2JS2xVr8rjG8vCoLlcQzwi opsrQdgCAWJAjMEAAEIAB0WIQRLUnh4XJes95w8aIMBygi3psUIJAUCZ7cefgAKCRABygi3psUI JEL4EACAPtlVi56MJnkSWjiiuqtsp4bsgyC2CktAZL/zOwsaKSd2Dn90xh3+V1FfNcE5TYiQAQF yiA+2GxSaYsRXwLtppeOcOy7c4kRz786SjO0P0IVCCvZdSH2M5v1p5E0qV2i/FYCjUFrKoEdu6p VqHZ7kyEkGYsP/kC3k8IjyTX/qGkbY9rADnqCTkbhsVXIPXxqh5g2H62JHzGBzre6Z+K4A2HwWX oDNeff1Ii1L/VKU6OUrWw3v0K7TLsTM5Y/4oEumBJIhQ52csRqK1RJRBVCQgOga1sU392gi8gJr CbqEOhJn6lJwWPEvfktgbcJZ0Gjl/CqokvZS5/1R2b6Q3MqWV8A26pX6L8sB0WqePolyLE10f+f brZvtDdDkpKWZjP5UiksQarH+u1XHUlOn0QHVsviZss08665e6Jro5RNqzwOJTgVKpbwcpGoJdu GEEJ4zH/MUWOWf6wt/iTN4aHb8Ut6T2cBwFA1ZB1JAxut6guaBAOou+KcjcB8FHw54ho9XvkPUQ a3WKAzu5ZuzLRu6kc8wOny/DtET/ytishoRxnhn9QuHqh1SRHkLWyTeJZAL6jgaSlQXCFr0xh9O 6H7FrEKfXjcOVUbq+aKNPitMObxHRsG9GIIwnfpM50orSS7+WptaB6olYcmA+J5Pxn8YBofQY6h KMQ044wHohMUA/w== X-Developer-Key: i=towinchenmi@gmail.com; a=openpgp; fpr=4B5278785C97ACF79C3C688301CA08B7A6C50824 Add information about CPU caches in the P-cluster of Apple A10 SoC. Due to "Apple Fusion Architecture" big.LITTLE switcher, only caches from one of the clusters can be used at any given moment. Signed-off-by: Nick Chan --- arch/arm64/boot/dts/apple/t8010.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t8010.dtsi b/arch/arm64/boot/dts/app= le/t8010.dtsi index b355d443ee476e7c98b352470e3b1b5d0fae7652..5d24da52cf255b6ad211d2ac40a= ad75a6194d595 100644 --- a/arch/arm64/boot/dts/apple/t8010.dtsi +++ b/arch/arm64/boot/dts/apple/t8010.dtsi @@ -36,6 +36,9 @@ cpu0: cpu@0 { performance-domains =3D <&cpufreq>; enable-method =3D "spin-table"; device_type =3D "cpu"; + next-level-cache =3D <&l2_cache>; + i-cache-size =3D <0x10000>; /* P-core */ + d-cache-size =3D <0x10000>; /* P-core */ }; =20 cpu1: cpu@1 { @@ -46,6 +49,16 @@ cpu1: cpu@1 { performance-domains =3D <&cpufreq>; enable-method =3D "spin-table"; device_type =3D "cpu"; + next-level-cache =3D <&l2_cache>; + i-cache-size =3D <0x10000>; /* P-core */ + d-cache-size =3D <0x10000>; /* P-core */ + }; + + l2_cache: l2-cache { + compatible =3D "cache"; + cache-level =3D <2>; + cache-unified; + cache-size =3D <0x300000>; /* P-cluster */ }; }; =20 --=20 2.48.1