linux-kernel - Re: [PATCH v4 6/6] arm64: dts: qcom: x1e80100: Add support for PCIe3 on x1e80100

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Message-ID: <ZvLQFSjwR-TvHbm_@hovoldconsulting.com>
Date: Tue, 24 Sep 2024 16:43:33 +0200
From: Johan Hovold <johan@...nel.org>
To: Qiang Yu <quic_qianyu@...cinc.com>
Cc: manivannan.sadhasivam@...aro.org, vkoul@...nel.org, kishon@...nel.org,
	robh@...nel.org, andersson@...nel.org, konradybcio@...nel.org,
	krzk+dt@...nel.org, conor+dt@...nel.org, mturquette@...libre.com,
	sboyd@...nel.org, abel.vesa@...aro.org, quic_msarkar@...cinc.com,
	quic_devipriy@...cinc.com, dmitry.baryshkov@...aro.org,
	kw@...ux.com, lpieralisi@...nel.org, neil.armstrong@...aro.org,
	linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	devicetree@...r.kernel.org, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 6/6] arm64: dts: qcom: x1e80100: Add support for PCIe3
 on x1e80100

On Tue, Sep 24, 2024 at 03:14:44AM -0700, Qiang Yu wrote:
> Describe PCIe3 controller and PHY. Also add required system resources like
> regulators, clocks, interrupts and registers configuration for PCIe3.

> @@ -2907,6 +2907,208 @@ mmss_noc: interconnect@...0000 {
>  			#interconnect-cells = <2>;
>  		};
>  
> +		pcie3: pcie@...0000 {
> +			device_type = "pci";
> +			compatible = "qcom,pcie-x1e80100";

> +			interrupts = <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 769 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 836 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 671 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 200 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 218 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 219 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "msi0",
> +					  "msi1",
> +					  "msi2",
> +					  "msi3",
> +					  "msi4",
> +					  "msi5",
> +					  "msi6",
> +					  "msi7",
> +					  "global";

This ninth "global" interrupt is not described by the bindings, which
would also need to be updated. What is it used for?

Johan