linux-kernel - Re: [PATCH] arm64: dts: s32g: add the eDMA nodes

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Message-ID: <ac1ea985-15cd-4001-9700-a185ceb338d7@kernel.org>
Date: Thu, 30 Jan 2025 09:48:07 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Larisa Grigore <larisa.grigore@....nxp.com>, Frank Li <Frank.Li@....com>,
 Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Peng Fan <peng.fan@....com>
Cc: imx@...ts.linux.dev, dmaengine@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, s32@....com,
 Christophe Lizzi <clizzi@...hat.com>, Alberto Ruiz <aruizrui@...hat.com>,
 Enric Balletbo <eballetb@...hat.com>
Subject: Re: [PATCH] arm64: dts: s32g: add the eDMA nodes

On 30/01/2025 08:29, Larisa Grigore wrote:
> Add the two eDMA nodes in the device tree in order to enable the probing
> of the S32G2/S32G3 eDMA driver.
> 
> Signed-off-by: Larisa Grigore <larisa.grigore@....nxp.com>
> ---
>  arch/arm64/boot/dts/freescale/s32g2.dtsi | 34 ++++++++++++++++++++++++
>  arch/arm64/boot/dts/freescale/s32g3.dtsi | 34 ++++++++++++++++++++++++
>  2 files changed, 68 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> index 7be430b78c83..f73cd5a0906d 100644
> --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> @@ -317,6 +317,23 @@ usdhc0-200mhz-grp4 {
>  			};
>  		};
>  
> +		edma0: dma-controller@...44000 {
> +			#dma-cells = <2>;

Any reason for not following DTS coding style in order of properties?
This is odd style.

> +			compatible = "nxp,s32g2-edma";
> +			reg = <0x40144000 0x24000>,
> +			      <0x4012c000 0x3000>,
> +			      <0x40130000 0x3000>;
> +			dma-channels = <32>;
> +			interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "tx-0-15",
> +					  "tx-16-31",
> +					  "err";
> +			clock-names = "dmamux0", "dmamux1";
> +			clocks = <&clks 63>, <&clks 64>;
> +		};
> +
>  		uart0: serial@...c8000 {
>  			compatible = "nxp,s32g2-linflexuart",
>  				     "fsl,s32v234-linflexuart";
> @@ -333,6 +350,23 @@ uart1: serial@...cc000 {
>  			status = "disabled";
>  		};
>  
> +		edma1: dma-controller@...44000 {
> +			#dma-cells = <2>;
> +			compatible = "nxp,s32g2-edma";
> +			reg = <0x40244000 0x24000>,
> +			      <0x4022c000 0x3000>,
> +			      <0x40230000 0x3000>;
> +			dma-channels = <32>;
> +			interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
> +			interrupt-names = "tx-0-15",
> +					  "tx-16-31",
> +					  "err";

interrupts, then interrupt-names but:

> +			clock-names = "dmamux0", "dmamux1";
> +			clocks = <&clks 63>, <&clks 64>;

here reversed.

Best regards,
Krzysztof