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

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Message-ID: <26f0459c-2eb5-46bf-9d55-8f830f9687ec@oss.nxp.com>
Date: Mon, 3 Feb 2025 09:57:59 +0200
From: Larisa Ileana Grigore <larisa.grigore@....nxp.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, 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 1/30/2025 10:48 AM, Krzysztof Kozlowski wrote:
> 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.
>
Thank you for your feedback! I will address it in v2.

> Best regards,
> Krzysztof

Best regards,
Larisa