On 2024-12-05 11:58 PM, Inochi Amaoto wrote:
> Add description for the BFloat16 precision Floating-Point ISA extension,
> (Zfbfmin, Zvfbfmin, Zvfbfwma). which was ratified in commit 4dc23d62
> ("Added Chapter title to BF16") of the riscv-isa-manual.
>
> Signed-off-by: Inochi Amaoto <inochiama@xxxxxxxxx>
> Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/riscv/extensions.yaml | 45 +++++++++++++++++++
> 1 file changed, 45 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> index 9c7dd7e75e0c..0a1f1a76d129 100644
> --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> @@ -329,6 +329,12 @@ properties:
> instructions, as ratified in commit 056b6ff ("Zfa is ratified") of
> riscv-isa-manual.
>
> + - const: zfbfmin
> + description:
> + The standard Zfbfmin extension which provides minimal support for
> + 16-bit half-precision brain floating-point instructions, as ratified
I think you mean "binary" here and in the entries below, not "brain".
> + in commit 4dc23d62 ("Added Chapter title to BF16") of riscv-isa-manual.
> +
> - const: zfh
> description:
> The standard Zfh extension for 16-bit half-precision binary
> @@ -525,6 +531,18 @@ properties:
> in commit 6f702a2 ("Vector extensions are now ratified") of
> riscv-v-spec.
>
> + - const: zvfbfmin
> + description:
> + The standard Zvfbfmin extension for minimal support for vectored
> + 16-bit half-precision brain floating-point instructions, as ratified
> + in commit 4dc23d62 ("Added Chapter title to BF16") of riscv-isa-manual.
> +
> + - const: zvfbfwma
> + description:
> + The standard Zvfbfwma extension for vectored half-precision brain
> + floating-point widening multiply-accumulate instructions, as ratified
> + in commit 4dc23d62 ("Added Chapter title to BF16") of riscv-isa-manual.
> +
> - const: zvfh
> description:
> The standard Zvfh extension for vectored half-precision
> @@ -663,6 +681,33 @@ properties:
> then:
> contains:
> const: zca
> + # Zfbfmin depends on F
> + - if:
> + contains:
> + const: zfbfmin
> + then:
> + contains:
> + const: f
> + # Zvfbfmin depends on V or Zve32f
> + - if:
> + contains:
> + const: zvfbfmin
> + then:
> + oneOf:
> + - contains:
> + const: v
> + - contains:
> + const: zve32f
> + # Zvfbfwma depends on Zfbfmin and Zvfbfmin
> + - if:
> + contains:
> + const: zvfbfwma
> + then:
> + allOf:
> + - contains:
> + const: zfbfmin
> + - contains:
> + const: zvfbfmin
>
> allOf:
> # Zcf extension does not exist on rv64
