Hi Lukasz, On Thu, Dec 6, 2018 at 11:08 AM Lukasz Majewski <lukma@xxxxxxx> wrote: > I will check this latter this week... Reading the spi dt-binding it states that the spi slave node is optional. If I remove it like this, then the warning is gone: --- a/arch/arm/boot/dts/vf610-bk4.dts +++ b/arch/arm/boot/dts/vf610-bk4.dts @@ -109,12 +109,6 @@ bus-num = <3>; status = "okay"; spi-slave; - - slave@0 { - compatible = "lwn,bk4"; - spi-max-frequency = <30000000>; - reg = <0>; - }; }; &edma0 { Does spi slave still work without it?