linux-kernel - Re: [PATCH 1/5] arm64: dts: imx8-ss-hsio: Wire up DMA IRQ for PCIe

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Message-ID: <4427798.ejJDZkT8p0@steina-w>
Date: Wed, 08 Jan 2025 10:58:18 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Frank Li <Frank.li@....com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org, imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux@...tq-group.com
Subject: Re: [PATCH 1/5] arm64: dts: imx8-ss-hsio: Wire up DMA IRQ for PCIe

Hi Frank,

Am Dienstag, 7. Januar 2025, 16:39:25 CET schrieb Frank Li:
> On Tue, Jan 07, 2025 at 03:01:06PM +0100, Alexander Stein wrote:
> > IRQ mapping is already present. Add the missing DMA interrupt.
> 
> PCI host side have not use bridge's DMA yet although hardware support it.

So this is a driver limitation, right? So IMHO the device description is
independent from that and still correct, right?

Best regards,
Alexander

> >
> > Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8-ss-hsio.dtsi | 5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-hsio.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-hsio.dtsi
> > index 70a8aa1a67911..4bdfc15487cbc 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8-ss-hsio.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8-ss-hsio.dtsi
> > @@ -57,8 +57,9 @@ pcieb: pcie@...10000 {
> >  		ranges = <0x81000000 0 0x00000000 0x8ff80000 0 0x00010000>,
> >  			 <0x82000000 0 0x80000000 0x80000000 0 0x0ff00000>;
> >  		#interrupt-cells = <1>;
> > -		interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
> > -		interrupt-names = "msi";
> > +		interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
> > +			     <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
> > +		interrupt-names = "msi", "dma";
> >  		#address-cells = <3>;
> >  		#size-cells = <2>;
> >  		clocks = <&pcieb_lpcg IMX_LPCG_CLK_6>,
> > --
> > 2.34.1
> >
> 


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