Hi Shawn,

> The dspi3 is used as slave controller on vf610-bk4, and the default
> '#address-cells = <1>;' setting in vfxxx.dtsi causes the following DTC
> warning.
> 
>   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:107.8-119.3
> arch/arm/boot/dts/vf610-bk4.dtb: Warning (spi_bus_reg): Failed
> prerequisite 'spi_bus_bridge'
> 
> For spi device used as slave controller, '#address-cells' should be 0.
> Let's overwrite the property in vf610-bk4.dts to fix the warning.
> 
> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> ---
>  arch/arm/boot/dts/vf610-bk4.dts | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/vf610-bk4.dts
> b/arch/arm/boot/dts/vf610-bk4.dts index 689c8930dce3..b08d561d6748
> 100644 --- a/arch/arm/boot/dts/vf610-bk4.dts
> +++ b/arch/arm/boot/dts/vf610-bk4.dts
> @@ -110,11 +110,11 @@
>  	bus-num = <3>;
>  	status = "okay";
>  	spi-slave;
> +	#address-cells = <0>;
>  
> -	slave@0 {
> +	slave {
>  		compatible = "lwn,bk4";
>  		spi-max-frequency = <30000000>;
> -		reg = <0>;
>  	};
>  };
>  

Thanks for fixing this problem,

Reviewed-by: Lukasz Majewski <lukma@denx.de>


Best regards,

Lukasz Majewski

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