linux-kernel - Re: [PATCH 5/6] arm64: dts: qcom: ipq9574: Add support for nsscc node

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Date:   Tue, 11 Jul 2023 11:57:34 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Devi Priya <quic_devipriy@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, konrad.dybcio@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        catalin.marinas@....com, will@...nel.org, p.zabel@...gutronix.de,
        richardcochran@...il.com, arnd@...db.de, geert+renesas@...der.be,
        neil.armstrong@...aro.org, nfraprado@...labora.com,
        rafal@...ecki.pl, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org
Cc:     quic_saahtoma@...cinc.com
Subject: Re: [PATCH 5/6] arm64: dts: qcom: ipq9574: Add support for nsscc node

On 11/07/2023 11:35, Devi Priya wrote:
> Add a node for the nss clock controller found on ipq9574 based devices.
> 
> Signed-off-by: Devi Priya <quic_devipriy@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 44 +++++++++++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> index f120c7c52351..257ce4a5bfd5 100644
> --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> @@ -10,6 +10,8 @@
>  #include <dt-bindings/clock/qcom,ipq9574-gcc.h>
>  #include <dt-bindings/interrupt-controller/arm-gic.h>
>  #include <dt-bindings/reset/qcom,ipq9574-gcc.h>
> +#include <dt-bindings/clock/qcom,ipq9574-nsscc.h>
> +#include <dt-bindings/reset/qcom,ipq9574-nsscc.h>
>  
>  / {
>  	interrupt-parent = <&intc>;
> @@ -17,6 +19,30 @@
>  	#size-cells = <2>;
>  
>  	clocks {
> +		bias_pll_cc_clk: bias-pll-cc-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <1200000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		bias_pll_nss_noc_clk: bias-pll-nss-noc-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <461500000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		bias_pll_ubi_nc_clk: bias-pll-ubi-nc-clk {
> +			compatible = "fixed-clock";
> +			clock-frequency = <353000000>;
> +			#clock-cells = <0>;
> +		};
> +
> +		gcc_gpll0_out_aux: gcc-gpll0-out-aux {
> +			compatible = "fixed-clock";
> +			clock-frequency = <800000000>;
> +			#clock-cells = <0>;
> +		};

Isn't this GCC clock?

> +
>  		sleep_clk: sleep-clk {
>  			compatible = "fixed-clock";
>  			#clock-cells = <0>;
> @@ -620,6 +646,24 @@
>  				status = "disabled";
>  			};
>  		};
> +
> +		nsscc: nsscc@...00000 {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation


Best regards,
Krzysztof