linux-kernel - Re: [PATCH 2/6] arm64: dts: qcom: sm8250: describe all PCI MSI interrupts

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Date: Thu, 25 Jan 2024 15:18:57 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Bjorn Andersson <andersson@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] arm64: dts: qcom: sm8250: describe all PCI MSI interrupts

On Thu, 25 Jan 2024 at 15:07, Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> Each group of MSI interrupts is mapped to the separate host interrupt.
> Describe each of interrupts in the device tree for PCIe hosts.  Not
> tested on hardware.
>
> PCIe0 was done already in commit f2819650aab5 ("arm64: dts: qcom:
> sm8250: provide additional MSI interrupts").
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/sm8250.dtsi | 24 ++++++++++++++++++++----
>  1 file changed, 20 insertions(+), 4 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> index 760501c1301a..41f5e6eb2f6b 100644
> --- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
> @@ -2248,8 +2248,16 @@ pcie1: pcie@...8000 {
>                         ranges = <0x01000000 0x0 0x00000000 0x0 0x40200000 0x0 0x100000>,
>                                  <0x02000000 0x0 0x40300000 0x0 0x40300000 0x0 0x1fd00000>;
>
> -                       interrupts = <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>;
> -                       interrupt-names = "msi";
> +                       interrupts = <GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 312 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 313 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 314 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 374 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 375 IRQ_TYPE_LEVEL_HIGH>;
> +                       interrupt-names = "msi0", "msi1", "msi2", "msi3",
> +                                         "msi4", "msi5", "msi6", "msi7";
>                         #interrupt-cells = <1>;
>                         interrupt-map-mask = <0 0 0 0x7>;
>                         interrupt-map = <0 0 0 1 &intc 0 434 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
> @@ -2349,8 +2357,16 @@ pcie2: pcie@...0000 {
>                         ranges = <0x01000000 0x0 0x00000000 0x0 0x64200000 0x0 0x100000>,
>                                  <0x02000000 0x0 0x64300000 0x0 0x64300000 0x0 0x3d00000>;
>
> -                       interrupts = <GIC_SPI 243 IRQ_TYPE_LEVEL_HIGH>;
> -                       interrupt-names = "msi";
> +                       interrupts = <GIC_SPI 243 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 261 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 262 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 263 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 264 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 278 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 288 IRQ_TYPE_LEVEL_HIGH>,
> +                                    <GIC_SPI 289 IRQ_TYPE_LEVEL_HIGH>;
> +                       interrupt-names = "msi0", "msi1", "msi2", "msi3",
> +                                         "msi4", "msi5", "msi6", "msi7";

This part looks a bit suspicious. All other platforms have these
interrupts in a continuous range.

Other than that, LGTM

>                         #interrupt-cells = <1>;
>                         interrupt-map-mask = <0 0 0 0x7>;
>                         interrupt-map = <0 0 0 1 &intc 0 290 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
> --
> 2.34.1
>
>


-- 
With best wishes
Dmitry