linux-kernel - Re: [PATCH 3/6] arm: dts: Change PCIe INTx mapping for Cygnus

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Date:   Mon, 11 Jun 2018 15:36:43 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Ray Jui <ray.jui@...adcom.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, linux-pci@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 3/6] arm: dts: Change PCIe INTx mapping for Cygnus

On 05/29/2018 02:58 PM, Ray Jui wrote:
> Change the PCIe INTx mapping to model the 4 INTx interrupts in the
> IRQ domain of the iProc PCIe controller itself
> 
> Signed-off-by: Ray Jui <ray.jui@...adcom.com>
> ---
>  arch/arm/boot/dts/bcm-cygnus.dtsi | 18 ++++++++++++++----
>  1 file changed, 14 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/bcm-cygnus.dtsi b/arch/arm/boot/dts/bcm-cygnus.dtsi
> index 699fdf9..6de21ef 100644
> --- a/arch/arm/boot/dts/bcm-cygnus.dtsi
> +++ b/arch/arm/boot/dts/bcm-cygnus.dtsi
> @@ -254,9 +254,14 @@
>  			compatible = "brcm,iproc-pcie";
>  			reg = <0x18012000 0x1000>;
>  
> +			interrupt-controller;
>  			#interrupt-cells = <1>;
> -			interrupt-map-mask = <0 0 0 0>;
> -			interrupt-map = <0 0 0 0 &gic GIC_SPI 100 IRQ_TYPE_NONE>;
> +			interrupt-map-mask = <0 0 0 7>;
> +			interrupt-map = <0 0 0 1 &pcie0 1>,
> +					<0 0 0 2 &pcie0 2>,
> +					<0 0 0 3 &pcie0 3>,
> +					<0 0 0 4 &pcie0 4>;
> +			interrupts = <GIC_SPI 100 IRQ_TYPE_NONE>;

You would want to fix those IRQ_TYPE_NONE values as well because since
commit 83a86fbb5b56b5eed8a476cc3fe214077d7c4f49 ("irqchip/gic: Loudly
complain about the use of IRQ_TYPE_NONE") this is going to create some
nice warnings on boot.

I am about to send fixes for NSP and HR2 since that's what I have access
to at the moment, but it would be good if you could send updates to the
Cygnus and NS2 DTS files?

Thanks

>  
>  			linux,pci-domain = <0>;
>  
> @@ -289,9 +294,14 @@
>  			compatible = "brcm,iproc-pcie";
>  			reg = <0x18013000 0x1000>;
>  
> +			interrupt-controller;
>  			#interrupt-cells = <1>;
> -			interrupt-map-mask = <0 0 0 0>;
> -			interrupt-map = <0 0 0 0 &gic GIC_SPI 106 IRQ_TYPE_NONE>;
> +			interrupt-map-mask = <0 0 0 7>;
> +			interrupt-map = <0 0 0 1 &pcie1 1>,
> +					<0 0 0 2 &pcie1 2>,
> +					<0 0 0 3 &pcie1 3>,
> +					<0 0 0 4 &pcie1 4>;
> +			interrupts = <GIC_SPI 106 IRQ_TYPE_NONE>;
>  
>  			linux,pci-domain = <1>;
>  
> 


-- 
Florian