Re: [PATCH V2 1/2] arm64: dts: imx8mm: Configure DMA on UART2

[Ahmad Fatoum <a.fatoum@pengutronix.de>]

On 7/3/25 13:38, Adam Ford wrote:
> UART2 is often used as the console, so the DMA was likely left
> off on purpose, since it's recommended to not use the DMA on the
> console. Because, the driver checks to see if the UART is used for
> the console when determining if it should initialize DMA, it
> should be safe to enable DMA on UART2 for all users.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
> Reviewed-by: Fabio Estevam <festevam@gmail.com>

Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>

> ---
> V2:  Fix spelling errors in commit message
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> index cfebaa01217e..ded89b046970 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi
> @@ -915,6 +915,8 @@ uart2: serial@30890000 {
>  					clocks = <&clk IMX8MM_CLK_UART2_ROOT>,
>  						 <&clk IMX8MM_CLK_UART2_ROOT>;
>  					clock-names = "ipg", "per";
> +					dmas = <&sdma1 24 4 0>, <&sdma1 25 4 0>;
> +					dma-names = "rx", "tx";
>  					status = "disabled";
>  				};
>  			};

-- 
Pengutronix e.K.                  |                             |
Steuerwalder Str. 21              | http://www.pengutronix.de/  |
31137 Hildesheim, Germany         | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686  | Fax:   +49-5121-206917-5555 |