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(-)
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@riscstar.com>
---
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 <guodong@riscstar.com>
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]. > > 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@riscstar.com> > --- > 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 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.
On Fri, Jan 16, 2026 at 3:13 AM Conor Dooley <conor@kernel.org> wrote: > > On Thu, Jan 15, 2026 at 07:18:56AM +0800, Guodong Xu wrote: > > --- > > 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 > > 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. Noted. Using individual patch message-ids is better in a case like this. Above, I put the entire series' message-id, which creates unrelated prerequisite stuff, as you pointed out. > > I applied the Anlogic patch. Thanks Conor. BR, Guodong Xu > > Thanks, > Conor.
On Thu, 15 Jan 2026 07:18:56 +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].
>
> 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.
>
> [...]
Applied to dt/riscv, thanks!
[3/4] riscv: dts: sophgo: sg2044: Add "b" ISA extension
https://github.com/sophgo/linux/commit/f16ae81b80ca4e721f4c4ed1f28390115f7721eb
Thanks,
Inochi
On Thu, 15 Jan 2026 07:18:56 +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].
>
> 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.
>
> [...]
Applied, thanks!
[4/4] riscv: dts: spacemit: k1: Add "b" ISA extension
https://github.com/spacemit-com/linux/commit/eb241eb29bad28cd17c5a4b9c355645e96094713
Best regards,
--
Yixun Lan <dlan@kernel.org>
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