Re: [PATCH 1/3] ARM: dts: exynos: Fix missing empty reg/ranges property regulators on Trats

[Sylwester Nawrocki]

Hi Krzysztof,

On 6/29/20 21:33, Krzysztof Kozlowski wrote:
> Remove the simple-bus compatible from a regulators node because its
> children do not have any unit addresses.  This fixes DTC warning:
>
>      Warning (simple_bus_reg): /regulators/regulator-0: missing or empty reg/ranges property
>
> Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> ---
>   arch/arm/boot/dts/exynos4210-trats.dts | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/arch/arm/boot/dts/exynos4210-trats.dts b/arch/arm/boot/dts/exynos4210-trats.dts
> index 3d791db6095c..cec413ee4490 100644
> --- a/arch/arm/boot/dts/exynos4210-trats.dts
> +++ b/arch/arm/boot/dts/exynos4210-trats.dts
> @@ -31,8 +31,6 @@
>   	};
>   
>   	regulators {
> -		compatible = "simple-bus";

I think you would also need to remove the 'regulators' node altogether, 
otherwise with your change the subnodes below won't get parsed and the 
regulators will not get registered.

>   		vemmc_reg: regulator-0 {
>   			compatible = "regulator-fixed";
>   			regulator-name = "VMEM_VDD_2.8V";

--
Thanks,
Sylwester