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From: Guodong Xu <guodong@riscstar.com>
To: Jonathan Corbet <corbet@lwn.net>, Paul Walmsley <pjw@kernel.org>,
	 Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	 Alexandre Ghiti <alex@ghiti.fr>,
	Conor Dooley <conor.dooley@microchip.com>,
	 Conor Dooley <conor@kernel.org>, Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Chen Wang <unicorn_wang@outlook.com>,
	Inochi Amaoto <inochiama@gmail.com>,  Yixun Lan <dlan@gentoo.org>
Cc: Palmer Dabbelt <palmer@rivosinc.com>,
	 Junhui Liu <junhui.liu@pigmoral.tech>,
	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 <guodong@riscstar.com>
Subject: [PATCH 0/2] riscv: dts: Add "b" ISA extension to existing devicetrees
Date: Tue, 13 Jan 2026 15:45:52 +0800	[thread overview]
Message-ID: <20260113-adding-b-dtsi-v1-0-22d6e55d19df@riscstar.com> (raw)

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.

Patch 2 adds "b" after "c" in 3 device tree files (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]

Signed-off-by: Guodong Xu <guodong@riscstar.com>
---
Guodong Xu (2):
      Documentation: riscv: uabi: Clarify ISA spec version for canonical order
      riscv: dts: Add "b" ISA extension to existing devicetrees

 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 <guodong@riscstar.com>


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             reply	other threads:[~2026-01-13  7:46 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-13  7:45 Guodong Xu [this message]
2026-01-13  7:45 ` [PATCH 1/2] Documentation: riscv: uabi: Clarify ISA spec version for canonical order Guodong Xu
2026-01-14 19:22   ` Paul Walmsley
2026-01-14 20:41     ` Conor Dooley
2026-01-13  7:45 ` [PATCH 2/2] riscv: dts: Add "b" ISA extension to existing devicetrees Guodong Xu
2026-01-13  7:53   ` Yixun Lan
2026-01-14  2:33     ` Guodong Xu
2026-01-14 20:42       ` Conor Dooley
2026-01-14 22:54         ` Guodong Xu

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