Re: [PATCH V3 2/3] arm64: dts: imx8mp: Add micfil node

[Marek Vasut <marex@denx.de>]

On 8/31/23 06:44, Adam Ford wrote:
> The i.MX8MP has a micfil controller which is used for interfacing
> with a pulse density microphone. Add the node and mark it as
> disabled by default.
> 
> Signed-off-by: Adam Ford <aford173@gmail.com>
> ---
> V3:  The AUDIOMIX_PDM_ROOT doesn't exist and the real clock is
>       called IMX8MP_CLK_AUDIOMIX_PDM_SEL, so swap it out.
> 
> V2:  No change
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 3167706d81e1..341fd0369ce9 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1479,6 +1479,27 @@ easrc: easrc@30c90000 {
>   					fsl,asrc-format = <2>;
>   					status = "disabled";
>   				};
> +
> +				micfil: audio-controller@30ca0000 {
> +					compatible = "fsl,imx8mp-micfil";
> +					reg = <0x30ca0000 0x10000>;
> +					#sound-dai-cells = <0>;
> +					interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
> +						     <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
> +						     <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>,
> +						     <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
> +					clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_PDM_IPG>,
> +						 <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_PDM_SEL>,
> +						 <&clk IMX8MP_AUDIO_PLL1_OUT>,
> +						 <&clk IMX8MP_AUDIO_PLL2_OUT>,
> +						 <&clk IMX8MP_CLK_EXT3>;
> +					clock-names = "ipg_clk", "ipg_clk_app",
> +						      "pll8k", "pll11k", "clkext3";
> +					dmas = <&sdma2 24 25 0x80000000>;
> +					dma-names = "rx";

Is dma-names really required if there is only a single DMA channel in DT ?