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Wed, 14 Jan 2026 15:19:09 -0800 (PST) From: Guodong Xu Subject: [PATCH v2 0/4] riscv: dts: Add "b" ISA extension to existing devicetrees Date: Thu, 15 Jan 2026 07:18:56 +0800 Message-Id: <20260115-adding-b-dtsi-v2-0-254dd61cf947@riscstar.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAGAkaGkC/3WPTW/CMAxA/0rl8zzlo4W1Qoj/gTiExgFragtxq IpQ//tCu8sOOz4rfs95gVBkEmiKF0QaWXjoM5iPAtqr6y+E7DODUWajtLbovOf+gmf0SRh1+bX VZWVtUFvIO7dIgafFdzytHOn+yNq0DqEjEbdom2L3a1X4bfHshNtsxbFEhb6sTbDOqhDcIbK0k lz8bIdu/87kt4QZOk5N0dOUcDWpGt7VK0sa4nP51KiX7D/3jzq3jPEbqiqvax/+tOA0z/MPi9k PniMBAAA= X-Change-ID: 20260113-adding-b-dtsi-148714533f07 To: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Conor Dooley , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Chen Wang , Inochi Amaoto , Yixun Lan , Conor Dooley Cc: Junhui Liu , linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, sophgo@lists.linux.dev, spacemit@lists.linux.dev, Guodong Xu X-Mailer: b4 0.14.3 The RISC-V "b" (Bit-manipulation) extension was ratified in April 2024, much later than its component extensions zba/zbb/zbs (June 2021). Recent updates to the device tree bindings [2] enforce that when all three component extensions are present, "b" must also be specified. Related discussion can also be found in [1]. Patch 1 clarifies the ISA spec version for canonical ordering in uabi.rst. It is a trivial update, but can help readers reference the correct document version. Acked-by Paul Walmsley in v1. Patch 2, 3 and 4 adds "b" after "c" in 3 different device tree files respectivly, anlogic, sophgo and spacemit, fixing the related dtbs_check warnings. This patchset is based on top of linux-next, tag: next-20260109, and depends on [2]. Link: https://lore.kernel.org/all/20251230-imprison-sleet-6b5a1e26d34b@spud/ [1] Link: https://lore.kernel.org/all/20260110-k3-basic-dt-v4-0-d492f3a30ffa@riscstar.com/ [2] Changes in v2: - Patch 1: Add Acked-by from Paul Walmsley. - Patch 2/3/4: These are splits from the v1 Patch 2. Split into three different patches for each SoC. - Link to v1: https://lore.kernel.org/r/20260113-adding-b-dtsi-v1-0-22d6e55d19df@riscstar.com Signed-off-by: Guodong Xu --- Guodong Xu (4): Documentation: riscv: uabi: Clarify ISA spec version for canonical order riscv: dts: anlogic: dr1v90: Add "b" ISA extension riscv: dts: sophgo: sg2044: Add "b" ISA extension riscv: dts: spacemit: k1: Add "b" ISA extension Documentation/arch/riscv/uabi.rst | 4 +- arch/riscv/boot/dts/anlogic/dr1v90.dtsi | 5 +- arch/riscv/boot/dts/sophgo/sg2044-cpus.dtsi | 256 ++++++++++++++-------------- arch/riscv/boot/dts/spacemit/k1.dtsi | 32 ++-- 4 files changed, 150 insertions(+), 147 deletions(-) --- base-commit: 31d167f54de93f14fa8e4bc6cbc4adaf7019fd94 change-id: 20260113-adding-b-dtsi-148714533f07 prerequisite-message-id: <20260110-k3-basic-dt-v4-0-d492f3a30ffa@riscstar.com> prerequisite-patch-id: 0c859b4d131b3360875c795c6148c6176b55fb91 prerequisite-patch-id: 2ed98dc1ab0f5ed923cc252415c345dc8caf6f17 prerequisite-patch-id: 1be1a031763fac029076a768f012af31e455be66 prerequisite-patch-id: 21bb8387c946e050910440e7a7622305d46d946d prerequisite-patch-id: f3bdc2c74b230663710086bd770a755d56cb8b9c prerequisite-patch-id: 1f162c02f8bdb5bbc8ce52ead4fcb76258f5c2b9 prerequisite-patch-id: 76e1ff26c2f1fe4019cfa574942b568000e6ca1f prerequisite-patch-id: 77ddc9e5dc85495adc803cdc605bdda2ddc7fa47 prerequisite-patch-id: a75c798383b46a14d40436357c769c3671184768 prerequisite-patch-id: 781fc10dcae2c38c84c25bee887ef7474786dd36 prerequisite-patch-id: 5be5d3e62aa73024bf9e1de6aad155be6d618f40 Best regards, -- Guodong Xu