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Thu, 18 Sep 2025 13:45:16 -0700 (PDT) From: Han Gao To: devicetree@vger.kernel.org, Drew Fustini , Guo Ren , Fu Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Chen Wang , Inochi Amaoto , Han Gao Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/3] riscv: dts: thead: add xtheadvector to the th1520 devicetree Date: Fri, 19 Sep 2025 04:44:47 +0800 Message-ID: <1ff3fb07b24fb375fcf9d3067aa50583f47c35fe.1758228055.git.rabenda.cn@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The th1520 support xtheadvector [1] so it can be included in the devicetree. Also include vlenb for the cpu. And set vlenb=3D16 [2]. This can be tested by passing the "mitigations=3Doff" kernel parameter. Link: https://lore.kernel.org/linux-riscv/20241113-xtheadvector-v11-4-236c2= 2791ef9@rivosinc.com/ [1] Link: https://lore.kernel.org/linux-riscv/aCO44SAoS2kIP61r@ghost/ [2] Signed-off-by: Han Gao --- arch/riscv/boot/dts/thead/th1520.dtsi | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/th= ead/th1520.dtsi index 42724bf7e90e..59d1927764a6 100644 --- a/arch/riscv/boot/dts/thead/th1520.dtsi +++ b/arch/riscv/boot/dts/thead/th1520.dtsi @@ -25,7 +25,8 @@ c910_0: cpu@0 { riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm"; + "zifencei", "zihpm", "xtheadvector"; + thead,vlenb =3D <16>; reg =3D <0>; i-cache-block-size =3D <64>; i-cache-size =3D <65536>; @@ -49,7 +50,8 @@ c910_1: cpu@1 { riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm"; + "zifencei", "zihpm", "xtheadvector"; + thead,vlenb =3D <16>; reg =3D <1>; i-cache-block-size =3D <64>; i-cache-size =3D <65536>; @@ -73,7 +75,8 @@ c910_2: cpu@2 { riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm"; + "zifencei", "zihpm", "xtheadvector"; + thead,vlenb =3D <16>; reg =3D <2>; i-cache-block-size =3D <64>; i-cache-size =3D <65536>; @@ -97,7 +100,8 @@ c910_3: cpu@3 { riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm"; + "zifencei", "zihpm", "xtheadvector"; + thead,vlenb =3D <16>; reg =3D <3>; i-cache-block-size =3D <64>; i-cache-size =3D <65536>; --=20 2.47.3 From nobody Thu Oct 2 07:43:36 2025 Received: from mail-pf1-f181.google.com (mail-pf1-f181.google.com [209.85.210.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8EF0E2F7463 for ; 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charset="utf-8" Existing rv64 hardware conforms to the rva20 profile. Ziccrse is an additional extension required by the rva20 profile, so th1520 has this extension. Signed-off-by: Han Gao --- arch/riscv/boot/dts/thead/th1520.dtsi | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/th= ead/th1520.dtsi index 59d1927764a6..7f07688aa964 100644 --- a/arch/riscv/boot/dts/thead/th1520.dtsi +++ b/arch/riscv/boot/dts/thead/th1520.dtsi @@ -24,8 +24,10 @@ c910_0: cpu@0 { device_type =3D "cpu"; riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; - riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm", "xtheadvector"; + riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", + "ziccrse", "zicntr", "zicsr", + "zifencei", "zihpm", + "xtheadvector"; thead,vlenb =3D <16>; reg =3D <0>; i-cache-block-size =3D <64>; @@ -49,8 +51,10 @@ c910_1: cpu@1 { device_type =3D "cpu"; riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; - riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm", "xtheadvector"; + riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", + "ziccrse", "zicntr", "zicsr", + "zifencei", "zihpm", + "xtheadvector"; thead,vlenb =3D <16>; reg =3D <1>; i-cache-block-size =3D <64>; @@ -74,8 +78,10 @@ c910_2: cpu@2 { device_type =3D "cpu"; riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; - riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm", "xtheadvector"; + riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", + "ziccrse", "zicntr", "zicsr", + "zifencei", "zihpm", + "xtheadvector"; thead,vlenb =3D <16>; reg =3D <2>; i-cache-block-size =3D <64>; @@ -99,8 +105,10 @@ c910_3: cpu@3 { device_type =3D "cpu"; riscv,isa =3D "rv64imafdc"; riscv,isa-base =3D "rv64i"; - riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "zicntr", "zicsr= ", - "zifencei", "zihpm", "xtheadvector"; + riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", + "ziccrse", "zicntr", "zicsr", + "zifencei", "zihpm", + "xtheadvector"; thead,vlenb =3D <16>; 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Thu, 18 Sep 2025 13:45:25 -0700 (PDT) From: Han Gao To: devicetree@vger.kernel.org, Drew Fustini , Guo Ren , Fu Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Chen Wang , Inochi Amaoto , Han Gao Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/3] riscv: dts: thead: add zfh for th1520 Date: Fri, 19 Sep 2025 04:44:49 +0800 Message-ID: <38abc793c2fcb9dd26c89bab10dd4450d91ced4c.1758228055.git.rabenda.cn@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" th1520 support Zfh ISA extension. It supports the same RISC-V extensions as SG2042. commit cb074bed1186 ("riscv: dts: sophgo: add zfh for sg2042") Signed-off-by: Han Gao --- arch/riscv/boot/dts/thead/th1520.dtsi | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/th= ead/th1520.dtsi index 7f07688aa964..2075bb969c2f 100644 --- a/arch/riscv/boot/dts/thead/th1520.dtsi +++ b/arch/riscv/boot/dts/thead/th1520.dtsi @@ -26,7 +26,7 @@ c910_0: cpu@0 { riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "ziccrse", "zicntr", "zicsr", - "zifencei", "zihpm", + "zifencei", "zihpm", "zfh", "xtheadvector"; thead,vlenb =3D <16>; reg =3D <0>; @@ -53,7 +53,7 @@ c910_1: cpu@1 { riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "ziccrse", "zicntr", "zicsr", - "zifencei", "zihpm", + "zifencei", "zihpm", "zfh", "xtheadvector"; thead,vlenb =3D <16>; reg =3D <1>; @@ -80,7 +80,7 @@ c910_2: cpu@2 { riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "ziccrse", "zicntr", "zicsr", - "zifencei", "zihpm", + "zifencei", "zihpm", "zfh", "xtheadvector"; thead,vlenb =3D <16>; reg =3D <2>; @@ -107,7 +107,7 @@ c910_3: cpu@3 { riscv,isa-base =3D "rv64i"; riscv,isa-extensions =3D "i", "m", "a", "f", "d", "c", "ziccrse", "zicntr", "zicsr", - "zifencei", "zihpm", + "zifencei", "zihpm", "zfh", "xtheadvector"; thead,vlenb =3D <16>; reg =3D <3>; --=20 2.47.3