linux-kernel - Re: [PATCH v5 2/5] arm64: dts: imx8mp: Add mu2 root clock

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Message-ID: <5873285.DvuYhMxLoT@steina-w>
Date: Mon, 17 Mar 2025 16:30:46 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: shawnguo@...nel.org, robh@...nel.org, linux-arm-kernel@...ts.infradead.org
Cc: s.hauer@...gutronix.de, kernel@...gutronix.de, krzk+dt@...nel.org,
 conor+dt@...nel.org, festevam@...il.com, devicetree@...r.kernel.org,
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, frank.li@....com, aisheng.dong@....com,
 daniel.baluta@...il.com, laurentiu.mihalcea@....com, shengjiu.wang@....com,
 iuliana.prodan@....com, a.fatoum@...gutronix.de, mathieu.poirier@...aro.org,
 linux-remoteproc@...r.kernel.org, Daniel Baluta <daniel.baluta@....com>,
 Peng Fan <peng.fan@....com>, Daniel Baluta <daniel.baluta@....com>
Subject: Re: [PATCH v5 2/5] arm64: dts: imx8mp: Add mu2 root clock

Am Montag, 17. März 2025, 14:33:03 CET schrieb Daniel Baluta:
> Enable MU2 node and add mu2 root clock.
> MU2 is used to communicate with DSP core.
> 
> Reviewed-by: Iuliana Prodan <iuliana.prodan@....com>
> Reviewed-by: Peng Fan <peng.fan@....com>
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>
> ---
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 3b725fe442d0..5b443fbeded8 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1253,7 +1253,7 @@ mu2: mailbox@...60000 {
>  				reg = <0x30e60000 0x10000>;
>  				interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
>  				#mbox-cells = <2>;
> -				status = "disabled";

There is no need to enable MU2 if the DSP is disabled by default, no?

Best regards
Alexander

> +				clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_MU2_ROOT>;
>  			};
>  
>  			i2c5: i2c@...d0000 {
> 


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