Re: [PATCH 2/3] arm64: dts: meson: add S4 Soc clock controller in DT

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On 08/07/2022 08:27, Yu Tu wrote:
> Added information about the S4 SOC Clock controller in DT.
> 
> Signed-off-by: Yu Tu <yu.tu@xxxxxxxxxxx>
> ---
>  arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> index ff213618a598..ad2ec26a1f4a 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
> @@ -86,7 +86,7 @@ gic: interrupt-controller@fff01000 {
>  		};
>  
>  		apb4: apb4@fe000000 {
> -			compatible = "simple-bus";
> +			compatible = "simple-bus", "syscon";

This is not allowed.
1. syscon needs also dedicated compatible
2. simple-bus with syscon means it is not a simple bus anymore, so nope.

>  			reg = <0x0 0xfe000000 0x0 0x480000>;
>  			#address-cells = <2>;
>  			#size-cells = <2>;
> @@ -118,6 +118,13 @@ gpio_intc: interrupt-controller@4080 {
>  					<10 11 12 13 14 15 16 17 18 19 20 21>;
>  			};
>  
> +			clkc: clock-controller {
> +				compatible = "amlogic,s4-clkc";
> +				#clock-cells = <1>;
> +				clocks = <&xtal>;
> +				clock-names = "xtal";
> +			};
> +
>  			uart_B: serial@7a000 {
>  				compatible = "amlogic,meson-s4-uart",
>  					     "amlogic,meson-ao-uart";


Best regards,
Krzysztof



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