[PATCH] arm64: dts: renesas: sparrow-hawk: Disable dtc spi_bus_bridge check

[Kuninori Morimoto]

Hi Geert
To: Mark

> make dtbs:
> 
>     arch/arm64/boot/dts/renesas/r8a779g0.dtsi:1269.24-1283.5: Warning (spi_bus_bridge): /soc/spi at e6ea0000: incorrect #address-cells for SPI bus
>       also defined at arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts:471.9-486.3
>     arch/arm64/boot/dts/renesas/r8a779g0.dtsi:1269.24-1283.5: Warning (spi_bus_bridge): /soc/spi at e6ea0000: incorrect #size-cells for SPI bus
>       also defined at arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts:471.9-486.3
>     arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dtb: Warning (spi_bus_reg): Failed prerequisite 'spi_bus_bridge'
> 
> The Sparrow Hawk uses the MSIOF module in I2S mode instead of SPI mode,
> triggering a conflict between the SPI bus bindings and dtc:
>   - Serial engines that can be SPI controllers must use "spi" as their
>     node names,
>   - Dtc assumes nodes named "spi" are always SPI controllers.
> 
> Fix this by disabling this specific warning for this board.
> 
> Fixes: ca764d5321a2cee7 ("arm64: dts: renesas: sparrow-hawk: Add MSIOF Sound support")
> Reported-by: Stephen Rothwell <sfr at canb.auug.org.au>
> Closes: https://lore.kernel.org/20250506192033.77338015@canb.auug.org.au
> Suggested-by: Rob Herring <robh at kernel.org>
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
> ---
(snip)
> +DTC_FLAGS_r8a779g3-sparrow-hawk += -Wno-spi_bus_bridge

Thank you for the patch.

But I still get the same warning. I'm using latest linux-next/master
+ this patch. And run this. Am I missing something ?

	> make dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/spi/renesas,sh-msiof.yaml

Best regards
---
Kuninori Morimoto

--