Re: [PATCH v4 1/3] dt-bindings: net: nfc: add st,st21nfcd

[Krzysztof Kozlowski]

On Wed, Sep 02, 2026 at 09:22:18PM +0000, Kristian Brox wrote:
> Add a compatible for the ST ST21NFCD NFC controller. Document optional
> SYS_CLK (clocks) and VPS_IO (vdd-io-supply).
> 
> ST21NFCD is not I2C-only; the ST data brief lists I2C and SPI.
> Split the spi-max-frequency if/else: forbid it for
> st,st21nfcb-i2c and st,st21nfcc-i2c, require it for st,st21nfcb-spi,
> and leave it optional for st,st21nfcd. Add clocks and vdd-io-supply to
> the existing st,st21nfcb-i2c example instead of a second I2C example.
> 
> Signed-off-by: Kristian Brox <isyourbrainfoss@xxxxxxxxx>
> ---
>  .../devicetree/bindings/net/nfc/st,st-nci.yaml     | 49 +++++++++++++++-------
>  1 file changed, 35 insertions(+), 14 deletions(-)

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>

Best regards,
Krzysztof