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Thu, 20 Feb 2025 04:22:47 -0800 (PST) From: Nick Chan Date: Thu, 20 Feb 2025 20:21:49 +0800 Subject: [PATCH 8/9] arm64: dts: apple: t8012: 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-v1-8-2c7011097768@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=1363; i=towinchenmi@gmail.com; h=from:subject:message-id; bh=G+mx3kaje+P3ZyUO/ditIxszcN7HViLpZE3JAiY3KS8=; b=owEBbQKS/ZANAwAIAQHKCLemxQgkAcsmYgBntx5/L3429r7pYcCYbI4Ok83LdV+FbS1dAwtua kdgMttCz3+JAjMEAAEIAB0WIQRLUnh4XJes95w8aIMBygi3psUIJAUCZ7cefwAKCRABygi3psUI JPnTD/99BMzSdUN1zSDmpMt9J6sLssoVIIAofLDDFZqY3AmmImgCPmW7/4gTCH+RCSjCoA1unC/ DqcO8Lnz0OgD26lYrPdJeRc6O6lUVNP+YQSD1P9HN6VLxf5X5sP2F4mCKCG5HOCmcziKY8VeuHh oPT/rwbRPyLePLHNW2jmRFlIIq8c1o23oYqeyONp8lGuorFuR8ePgu+hZfnEh+mBM1LazZXZbVE uR7mJURz+Lf0DS+EjKq08ORExS+L5PBtDq5OpSzhiPAB/A2iOTHBeDqfYBhDHz17WIU8IvjNj9O siP8Gjd9U3HyM6r2268VUNM1KrXIh+HCXi2LjCLdLrBLQfTTKRg1PBGY5JthVAP9W047OGdVc9X SIotScz2fOpfG9KFcAwnHzVnTtO5gHClX/afXr0VVceter2NR7O0vuMsGcgHGYbPKdeJUAmr/ZD wCKG0+RtsFRIy3Voil3yojqW6mAsamyzGLvS9h/FYwy+B9fANXJ0/vQW2kvZesQ8AZqiuRvQnJD pV6p3042PGur6NR4zljlyXgnPXJOI511rlsZTYRgP9ZCzghQnV60fJ1TIY8r91EErCrLtjBfIE6 xoaqB9RrVcULQ9AgtHxxIgo6Du6gjBHBcsq1quAwEWei9SNEE2KB+ttkBl0ChRhuKmrMhBd9uTW FBcsHjWvsE5DOVQ== X-Developer-Key: i=towinchenmi@gmail.com; a=openpgp; fpr=4B5278785C97ACF79C3C688301CA08B7A6C50824 Add information about CPU caches in the P-cluster of Apple T2 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/t8012.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t8012.dtsi b/arch/arm64/boot/dts/app= le/t8012.dtsi index 42df2f51ad7be4c4533e76d18e49a9a747b6b7a8..a259e5735d938cfa5b29cee6c75= 4c7a3c0aaae08 100644 --- a/arch/arm64/boot/dts/apple/t8012.dtsi +++ b/arch/arm64/boot/dts/apple/t8012.dtsi @@ -36,6 +36,9 @@ cpu0: cpu@10000 { 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@10001 { @@ -46,6 +49,16 @@ cpu1: cpu@10001 { 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