From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C55EA2E11DC; Thu, 15 Jan 2026 19:13:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768504403; cv=none; b=bVXlADu8DIg2kYuDxPfV06LaBkFctsZsKAPFKY/p7ClgzO7h0vbywrXee8+uVXZ+WO3Cr98d7j6Ku2pTBGJYjt3epY7WNmgd5TReFDSEQnc0muWTkoAVQnNN2UyIfGKbYqsdL825Sr5Jy+KNbyngtydse4zetsDtVp3OskIEdg0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768504403; c=relaxed/simple; bh=6ERhtSOK4Q4fZaqgucSIqkZPcyHf8nMO3hzMy9j2wWo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=QuwB7Ltn1mny6R0B4khpgRR4mpdPBXoyfKPGXjZ+BtBx/Zn2YBIwhCKps8LZjGSkTBkX548QIbvTW5bjzzz+L6nR9QLGWQml7iAZdenI3SmNGGUxqeN55+asOfjzkum9UBVtgKlZzH/qKoRHfxj9CgHfTU8b4XL08s4fY536JUo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NsvKt4sd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NsvKt4sd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 590A7C116D0; Thu, 15 Jan 2026 19:13:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768504403; bh=6ERhtSOK4Q4fZaqgucSIqkZPcyHf8nMO3hzMy9j2wWo=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NsvKt4sd05QKOUaPz2q6BkE1QSNszgX8p8G6nz1F55VMcfHQpEdOWVCIHKu/GKeeR 3M3YkKAadYREkVOiMlmwcBYalZdwftWcycDbHUR2TBfHY2kWE/Bnm2RE1dzyVTgJL0 tZ6LzUVFDZagq8YZFCDk0UhW9XDgOIciRVlpG4p10ycqwJueivh8NbDjqHSmv9R1E2 XMmgAM2ucb8XKGfEevA5Pf3ImuXQXpPr9esn9U/b7jnn9ANaIZyRJNS+1UCRL1FQU/ KXMesoIe2rQ5d5Kl1vwXkPLBoMDwOG/JbqXKUDNh5Sjiyj7iKUtsJEGxZ/xf6RPrfu JrHci5Xp+FyKQ== Date: Thu, 15 Jan 2026 19:13:17 +0000 From: Conor Dooley To: Guodong Xu Cc: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Conor Dooley , Rob Herring , Krzysztof Kozlowski , Chen Wang , Inochi Amaoto , Yixun Lan , Conor Dooley , 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 Subject: Re: [PATCH v2 0/4] riscv: dts: Add "b" ISA extension to existing devicetrees Message-ID: <20260115-phonics-reversal-80541ca1f2df@spud> References: <20260115-adding-b-dtsi-v2-0-254dd61cf947@riscstar.com> Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sP0KQQHEFQVHHdeO" Content-Disposition: inline In-Reply-To: <20260115-adding-b-dtsi-v2-0-254dd61cf947@riscstar.com> --sP0KQQHEFQVHHdeO Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 15, 2026 at 07:18:56AM +0800, Guodong Xu wrote: > 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]. >=20 > 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. >=20 > 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. >=20 > This patchset is based on top of linux-next, tag: next-20260109, and > depends on [2]. >=20 > Link: https://lore.kernel.org/all/20251230-imprison-sleet-6b5a1e26d34b@sp= ud/ [1] > Link: https://lore.kernel.org/all/20260110-k3-basic-dt-v4-0-d492f3a30ffa@= riscstar.com/ [2] >=20 > 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-v1-0-22d6e= 55d19df@riscstar.com >=20 > 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 >=20 > 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= =2Ecom> > 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 FWIW, this kind of prereq-patch-id stuff isn't really helpful, because I don't think there's actually any dependencies on that work. It actually trips up some parts of b4 that think they're needed. I applied the Anlogic patch. Thanks, Conor. --sP0KQQHEFQVHHdeO Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRh246EGq/8RLhDjO14tDGHoIJi0gUCaWk8TAAKCRB4tDGHoIJi 0qJXAP9BAi/JL4BUX4v3frtYl233RdCgXONa5Aa6sLWiDuldrAD+LoenY5vTUJMs 2yqbA1IH2zP1CkI5ysicbD/YYaQMtww= =HTet -----END PGP SIGNATURE----- --sP0KQQHEFQVHHdeO--