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

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Message-ID: <CAEnQRZCsCYbQU8uxpFeyLmji65VRoO0rckRcoyc3frd2_B_KqQ@mail.gmail.com>
Date: Mon, 17 Mar 2025 17:58:07 +0200
From: Daniel Baluta <daniel.baluta@...il.com>
To: Alexander Stein <alexander.stein@...tq-group.com>
Cc: shawnguo@...nel.org, robh@...nel.org, linux-arm-kernel@...ts.infradead.org, 
	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-kernel@...r.kernel.org, frank.li@....com, 
	aisheng.dong@....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>
Subject: Re: [PATCH v5 2/5] arm64: dts: imx8mp: Add mu2 root clock

On Mon, Mar 17, 2025 at 5:30 PM Alexander Stein
<alexander.stein@...tq-group.com> wrote:
>
> 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?

True, I can enable it only when needed. Will fix in next version.