linux-kernel - Re: [PATCH v6 2/5] arm64: dts: imx8mp: Add mu2 root clock

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Message-ID: <4999695.31r3eYUQgx@steina-w>
Date: Wed, 19 Mar 2025 10:59:28 +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 v6 2/5] arm64: dts: imx8mp: Add mu2 root clock

Hi,

Am Mittwoch, 19. März 2025, 10:46:18 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-evk.dts | 4 ++++
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 1 +
>  2 files changed, 5 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> index c26954e5a605..d2fdb420f2d3 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
> @@ -690,6 +690,10 @@ dsi_out: endpoint {
>  	};
>  };
>  
> +&mu2 {
> +	status = "okay";
> +};
> +

I think this is supposed to be part of patch 5.

>  &pcie_phy {
>  	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
>  	clocks = <&pcie0_refclk>;
> diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> index 3b725fe442d0..deb98f03180a 100644
> --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> @@ -1254,6 +1254,7 @@ mu2: mailbox@...60000 {
>  				interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
>  				#mbox-cells = <2>;
>  				status = "disabled";
> +				clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_MU2_ROOT>;

Please keep status as the last property.

Best regards
Alexander

>  			};
>  
>  			i2c5: i2c@...d0000 {
> 


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