linux-kernel - Re: [PATCH v4 1/3] arm64: dts: qcom: Add interconnect nodes for SDX75

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Message-ID: <3a042a26-81b4-4ab3-ba03-a38ae876634b@linaro.org>
Date:   Thu, 12 Oct 2023 18:48:08 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Rohit Agarwal <quic_rohiagar@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        dmitry.baryshkov@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] arm64: dts: qcom: Add interconnect nodes for SDX75



On 10/4/23 10:08, Rohit Agarwal wrote:
> Add interconnect nodes to support interconnects on SDX75.
> Also parallely add the interconnect property for UART required
> so that the bootup to shell does not break with interconnects
> in place.
> 
> Signed-off-by: Rohit Agarwal <quic_rohiagar@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/sdx75.dtsi | 52 +++++++++++++++++++++++++++++++++++++
>   1 file changed, 52 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sdx75.dtsi b/arch/arm64/boot/dts/qcom/sdx75.dtsi
> index e180aa4..b4723fa 100644
> --- a/arch/arm64/boot/dts/qcom/sdx75.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdx75.dtsi
> @@ -8,6 +8,8 @@
>   
>   #include <dt-bindings/clock/qcom,rpmh.h>
>   #include <dt-bindings/clock/qcom,sdx75-gcc.h>
> +#include <dt-bindings/interconnect/qcom,icc.h>
> +#include <dt-bindings/interconnect/qcom,sdx75.h>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/power/qcom,rpmhpd.h>
>   #include <dt-bindings/power/qcom-rpmpd.h>
> @@ -203,6 +205,19 @@
>   		};
>   	};
>   
> +	clk_virt: interconnect-0 {
> +		compatible = "qcom,sdx75-clk-virt";
> +		#interconnect-cells = <2>;
> +		qcom,bcm-voters = <&apps_bcm_voter>;
> +		clocks = <&rpmhcc RPMH_QPIC_CLK>;
> +	};
> +
> +	mc_virt: interconnect-1 {
> +		compatible = "qcom,sdx75-mc-virt";
> +		#interconnect-cells = <2>;
> +		qcom,bcm-voters = <&apps_bcm_voter>;
> +	};
> +
>   	memory@...00000 {
>   		device_type = "memory";
>   		reg = <0x0 0x80000000 0x0 0x0>;
> @@ -434,6 +449,9 @@
>   			clock-names = "m-ahb",
>   				      "s-ahb";
>   			iommus = <&apps_smmu 0xe3 0x0>;
> +			interconnects = <&clk_virt MASTER_QUP_CORE_0 QCOM_ICC_TAG_ALWAYS
> +					 &clk_virt SLAVE_QUP_CORE_0 QCOM_ICC_TAG_ALWAYS>;
> +			interconnect-names = "qup-core";
No qup-config?

My brain compiler says this would cause a dt checker warning, at least 
on next-20231012.

Konrad