linux-kernel - Re: [PATCH RFC v2 3/4] arm64: dts: s32: set Ethernet channel irqs

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Message-ID: <ea1af06b-fb85-4131-bad3-00d12c032c1f@suse.com>
Date: Wed, 21 Jan 2026 17:15:08 +0100
From: Matthias Brugger <mbrugger@...e.com>
To: jan.petrous@....nxp.com, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Chester Lin <chester62515@...il.com>,
 Ghennadi Procopciuc <ghennadi.procopciuc@....nxp.com>,
 NXP S32 Linux Team <s32@....com>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Cc: netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 imx@...ts.linux.dev, devicetree@...r.kernel.org
Subject: Re: [PATCH RFC v2 3/4] arm64: dts: s32: set Ethernet channel irqs



On 21/01/2026 15:23, Jan Petrous via B4 Relay wrote:
> From: "Jan Petrous (OSS)" <jan.petrous@....nxp.com>
> 
> The GMAC Ethernet controller found on S32G2/S32G3 and S32R45
> contains up to 5 RX and 5 TX channels.
> It can operate in two interrupt modes:
> 
>    1) Sharing IRQ mode: only MAC IRQ line is used
>       for all channels.
> 
>    2) Multiple IRQ mode: every channel uses two IRQ lines,
>       one for RX and second for TX.
> 
> Specify all IRQ twins for all channels.
> 
> Signed-off-by: Jan Petrous (OSS) <jan.petrous@....nxp.com>

Reviewed-by: Matthias Brugger <mbrugger@...e.com>

> ---
>   arch/arm64/boot/dts/freescale/s32g2.dtsi | 26 +++++++++++++++++++++++---
>   arch/arm64/boot/dts/freescale/s32g3.dtsi | 26 +++++++++++++++++++++++---
>   2 files changed, 46 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> index 51d00dac12de..5a553d503137 100644
> --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> @@ -3,7 +3,7 @@
>    * NXP S32G2 SoC family
>    *
>    * Copyright (c) 2021 SUSE LLC
> - * Copyright 2017-2021, 2024-2025 NXP
> + * Copyright 2017-2021, 2024-2026 NXP
>    */
>   
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
> @@ -732,8 +732,28 @@ gmac0: ethernet@...3c000 {
>   			reg = <0x4033c000 0x2000>, /* gmac IP */
>   			      <0x4007c004 0x4>;    /* GMAC_0_CTRL_STS */
>   			interrupt-parent = <&gic>;
> -			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> -			interrupt-names = "macirq";
> +			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 0: tx, rx */
> +				     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 1: tx, rx */
> +				     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 2: tx, rx */
> +				     <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 3: tx, rx */
> +				     <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 4: tx, rx */
> +				     <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "macirq",
> +					  "tx-queue-0", "rx-queue-0",
> +					  "tx-queue-1", "rx-queue-1",
> +					  "tx-queue-2", "rx-queue-2",
> +					  "tx-queue-3", "rx-queue-3",
> +					  "tx-queue-4", "rx-queue-4";
>   			snps,mtl-rx-config = <&mtl_rx_setup>;
>   			snps,mtl-tx-config = <&mtl_tx_setup>;
>   			status = "disabled";
> diff --git a/arch/arm64/boot/dts/freescale/s32g3.dtsi b/arch/arm64/boot/dts/freescale/s32g3.dtsi
> index eff7673e7f34..e1f248d3aedb 100644
> --- a/arch/arm64/boot/dts/freescale/s32g3.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g3.dtsi
> @@ -1,6 +1,6 @@
>   // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
>   /*
> - * Copyright 2021-2025 NXP
> + * Copyright 2021-2026 NXP
>    *
>    * Authors: Ghennadi Procopciuc <ghennadi.procopciuc@....com>
>    *          Ciprian Costea <ciprianmarian.costea@....com>
> @@ -809,8 +809,28 @@ gmac0: ethernet@...3c000 {
>   			reg = <0x4033c000 0x2000>, /* gmac IP */
>   			      <0x4007c004 0x4>;    /* GMAC_0_CTRL_STS */
>   			interrupt-parent = <&gic>;
> -			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>;
> -			interrupt-names = "macirq";
> +			interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 0: tx, rx */
> +				     <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 1: tx, rx */
> +				     <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 2: tx, rx */
> +				     <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 3: tx, rx */
> +				     <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>,
> +				     /* CHN 4: tx, rx */
> +				     <GIC_SPI 66 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "macirq",
> +					  "tx-queue-0", "rx-queue-0",
> +					  "tx-queue-1", "rx-queue-1",
> +					  "tx-queue-2", "rx-queue-2",
> +					  "tx-queue-3", "rx-queue-3",
> +					  "tx-queue-4", "rx-queue-4";
>   			snps,mtl-rx-config = <&mtl_rx_setup>;
>   			snps,mtl-tx-config = <&mtl_tx_setup>;
>   			status = "disabled";
>