Hi Lukasz/Rob,

On Tue, Oct 9, 2018 at 7:50 AM Lukasz Majewski [off-list ref] wrote:

+&dspi3 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_dspi3>;
+       bus-num = <3>;
+       status = "okay";
+       spi-slave;
+
+       slave@0 {
+               compatible = "lwn,bk4";
+               spi-max-frequency = <30000000>;
+               reg = <0>;
+       };
+};

This is causing the following dtc warning in linux-next:

  DTC     arch/arm/boot/dts/vf610-bk4.dtb
arch/arm/boot/dts/vfxxx.dtsi:550.24-563.6: Warning (spi_bus_bridge):
/soc/aips-bus@40080000/spi@400ad000: incorrect #address-cells for SPI
bus
  also defined at arch/arm/boot/dts/vf610-bk4.dts:106.8-118.3
arch/arm/boot/dts/vf610-bk4.dtb: Warning (spi_bus_reg): Failed
prerequisite 'spi_bus_bridge'

If spi-slave property is removed the warning is gone.

Looking at drivers/spi/spi-fsl-dspi.c I don't see the "spi-slave"
property being handled there.

Any ideas on how to fix this?

Thanks

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