linux-kernel - Re: [PATCH 11/11] arm64: dtsi: qcom: ipq9574: Add nodes to bring up multipd

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Message-ID: <c89d2b2b-fea1-c255-582d-60a783e2f555@linaro.org>
Date:   Tue, 7 Mar 2023 16:44:23 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Manikanta Mylavarapu <quic_mmanikan@...cinc.com>,
        agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        jassisinghbrar@...il.com, mathieu.poirier@...aro.org,
        mturquette@...libre.com, sboyd@...nel.org, quic_gurus@...cinc.com,
        loic.poulain@...aro.org, quic_eberman@...cinc.com,
        robimarko@...il.com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-remoteproc@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     quic_srichara@...cinc.com, quic_gokulsri@...cinc.com,
        quic_sjaganat@...cinc.com, quic_kathirav@...cinc.com,
        quic_arajkuma@...cinc.com, quic_anusha@...cinc.com,
        quic_poovendh@...cinc.com
Subject: Re: [PATCH 11/11] arm64: dtsi: qcom: ipq9574: Add nodes to bring up
 multipd

On 07/03/2023 05:41, Manikanta Mylavarapu wrote:
> Enable nodes required for multipd remoteproc bring up.
> 
> Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 145 ++++++++++++++++++++++++++
>  1 file changed, 145 insertions(+)
> 


>  	soc: soc@0 {
>  		compatible = "simple-bus";
>  		#address-cells = <1>;
> @@ -829,6 +858,122 @@ IRQ_TYPE_LEVEL_HIGH>, /* int_c */
>  			msi-parent = <&v2m0>;
>  			status = "disabled";
>  		};
> +
> +		q6v5_wcss: remoteproc@...0000 {

Be sure you put it in correct place - ordered by unit address.

> +			compatible = "qcom,ipq9574-q6-mpd";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;

Why do you need them?

> +			reg = <0x0cd00000 0x4040>;

reg is always a second property.

> +			interrupts-extended = <&intc GIC_SPI 325 IRQ_TYPE_EDGE_RISING>,
> +					      <&wcss_smp2p_in 0 0>,
> +					      <&wcss_smp2p_in 1 0>,
> +					      <&wcss_smp2p_in 2 0>,
> +					      <&wcss_smp2p_in 3 0>;
> +			interrupt-names = "wdog",
> +					  "fatal",
> +					  "ready",
> +					  "handover",
> +					  "stop-ack";
> +
> +			clocks = <&gcc GCC_ANOC_WCSS_AXI_M_CLK>,
> +				 <&gcc GCC_WCSS_AHB_S_CLK>,
> +				 <&gcc GCC_WCSS_ECAHB_CLK>,
> +				 <&gcc GCC_WCSS_ACMT_CLK>,
> +				 <&gcc GCC_WCSS_AXI_M_CLK>,
> +				 <&gcc GCC_Q6_AXIM_CLK>,
> +				 <&gcc GCC_Q6_AXIM2_CLK>,
> +				 <&gcc GCC_Q6_AHB_CLK>,
> +				 <&gcc GCC_Q6_AHB_S_CLK>,
> +				 <&gcc GCC_Q6SS_BOOT_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_APB_BDG_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_ATB_BDG_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_DAPBUS_BDG_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_NTS_BDG_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_APB_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_ATB_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_DAPBUS_CLK>,
> +				 <&gcc GCC_WCSS_DBG_IFC_NTS_CLK>,
> +				 <&gcc GCC_Q6_TSCTR_1TO2_CLK>,
> +				 <&gcc GCC_Q6SS_ATBM_CLK>,
> +				 <&gcc GCC_Q6SS_PCLKDBG_CLK>,
> +				 <&gcc GCC_Q6SS_TRIG_CLK>,
> +				 <&gcc GCC_MEM_NOC_Q6_AXI_CLK>,
> +				 <&gcc GCC_WCSS_Q6_TBU_CLK>,
> +				 <&gcc GCC_SYS_NOC_WCSS_AHB_CLK>;
> +
> +			clock-names = "anoc_wcss_axi_m",
> +				      "wcss_ahb_s",
> +				      "wcss_ecahb",
> +				      "wcss_acmt",
> +				      "wcss_axi_m",
> +				      "q6_axim",
> +				      "q6_axim2",
> +				      "q6_ahb",
> +				      "q6_ahb_s",
> +				      "q6ss_boot",
> +				      "dbg-apb-bdg",
> +				      "dbg-atb-bdg",
> +				      "dbg-dapbus-bdg",
> +				      "dbg-nts-bdg",
> +				      "dbg-apb",
> +				      "dbg-atb",
> +				      "dbg-dapbus",
> +				      "dbg-nts",
> +				      "q6_tsctr_1to2_clk",
> +				      "q6ss_atbm_clk",
> +				      "q6ss_pclkdbg_clk",
> +				      "q6ss_trig_clk",
> +				      "mem_noc_q6_axi",
> +				      "wcss_q6_tbu",
> +				      "sys_noc_wcss_ahb";
> +
> +			assigned-clocks = <&gcc GCC_ANOC_WCSS_AXI_M_CLK>,
> +				 <&gcc GCC_WCSS_AHB_S_CLK>,
> +				 <&gcc GCC_WCSS_ECAHB_CLK>,
> +				 <&gcc GCC_WCSS_ACMT_CLK>,
> +				 <&gcc GCC_WCSS_AXI_M_CLK>,
> +				 <&gcc GCC_Q6_AXIM_CLK>,
> +				 <&gcc GCC_Q6_AXIM2_CLK>,
> +				 <&gcc GCC_Q6_AHB_CLK>,
> +				 <&gcc GCC_Q6_AHB_S_CLK>,
> +				 <&gcc GCC_Q6SS_BOOT_CLK>,
> +				 <&gcc GCC_MEM_NOC_Q6_AXI_CLK>,
> +				 <&gcc GCC_WCSS_Q6_TBU_CLK>,
> +				 <&gcc GCC_SYS_NOC_WCSS_AHB_CLK>;
> +
> +			assigned-clock-rates = <266666667>,
> +						<133333333>,
> +						<133333333>,
> +						<133333333>,
> +						<266666667>,
> +						<533000000>,
> +						<342857143>,
> +						<133333333>,
> +						<133333333>,
> +						<342857143>,
> +						<533000000>,
> +						<533000000>,
> +						<133333333>;
> +
> +			qcom,smem-states = <&wcss_smp2p_out 0>,
> +					   <&wcss_smp2p_out 1>;
> +			qcom,smem-state-names = "shutdown",
> +						"stop";
> +
> +			memory-region = <&q6_region>;
> +
> +			glink-edge {
> +				interrupts = <GIC_SPI 321 IRQ_TYPE_EDGE_RISING>;
> +				label = "rtr";
> +				qcom,remote-pid = <1>;
> +				mboxes = <&apcs_glb 8>;
> +			};
> +
> +			q6_wcss_pd1: remoteproc_pd1 {
> +				compatible = "qcom,ipq9574-wcss-ahb-mpd";

Why do you need empty node? Usually there is no benefit and these should
be just part of parent.

> +			};
> +		};
>  	};
>  
>  	rpm-glink {

Best regards,
Krzysztof