[PATCH v2 4/4] riscv: dts: spacemit: k1: Add "b" ISA extension

Yixun Lan dlan at gentoo.org
Wed Jan 14 16:39:29 PST 2026


Hi Guodong,

On 07:19 Thu 15 Jan     , Guodong Xu wrote:
> "b" is ratified (Apr/2024) much later than its components zba/zbb/zbs
> (Jun/2021). With "b" added into riscv/extensions.yaml, a dependency
> checking rule is now enforced, which requires that when zba, zbb, and zbs
> are all specified, "b" must be added as well. Failing to do this will
> cause dtbs_check schema check warnings.
> 
> According to uabi.rst, as a single-letter extension, "b" should be added
> after "c" in canonical order.
> 
> Update k1.dtsi to conform to this rule.
> 
> Signed-off-by: Guodong Xu <guodong at riscstar.com>

Reviewed-by: Yixun Lan <dlan at gentoo.org>

-- 
Yixun Lan (dlan)



More information about the linux-riscv mailing list