linux-kernel - Re: [PATCH 2/2] arm64: dts: imx8mp: add reserve-memory nodes for DSP

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Message-ID: <20230912114200.y626dyefwynbeytv@pengutronix.de>
Date:   Tue, 12 Sep 2023 13:42:00 +0200
From:   Marco Felsch <m.felsch@...gutronix.de>
To:     Iuliana Prodan <iuliana.prodan@....com>
Cc:     "Iuliana Prodan (OSS)" <iuliana.prodan@....nxp.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, Shawn Guo <shawnguo@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        "S.J. Wang" <shengjiu.wang@....com>,
        Fabio Estevam <festevam@...il.com>, devicetree@...r.kernel.org,
        Daniel Baluta <daniel.baluta@....com>,
        Mpuaudiosw <Mpuaudiosw@....com>,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org,
        LnxRevLi <LnxRevLi@....com>, linux-imx <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] arm64: dts: imx8mp: add reserve-memory nodes for DSP

On 23-09-12, Iuliana Prodan wrote:
> On 9/12/2023 2:30 PM, Marco Felsch wrote:
> > Hi Iuliana,
> > 
> > On 23-09-12, Iuliana Prodan (OSS) wrote:
> > > From: Iuliana Prodan <iuliana.prodan@....com>
> > > 
> > > Add the reserve-memory nodes used by DSP when the rpmsg
> > > feature is enabled.
> > > These can be later used in a dsp node, like:
> > > dsp: dsp@...e8000 {
> > > 	compatible = "fsl,imx8mp-dsp";
> > > 	reg = <0x3b6e8000 0x88000>;
> > > 	mbox-names = "tx0", "rx0", "rxdb0";
> > > 	mboxes = <&mu2 2 0>, <&mu2 2 1>,
> > > 		<&mu2 3 0>, <&mu2 3 1>;
> > > 	memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>,
> > > 		<&dsp_vdev0vring1>, <&dsp_reserved>;
> > > 	status = "okay";
> > > };
> > > 
> > > Signed-off-by: Iuliana Prodan <iuliana.prodan@....com>
> > > ---
> > >   arch/arm64/boot/dts/freescale/imx8mp.dtsi | 12 ++++++++++++
> > >   1 file changed, 12 insertions(+)
> > > 
> > > diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > > index cc406bb338fe..eedc1921af62 100644
> > > --- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > > +++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
> > > @@ -210,6 +210,18 @@
> > >   		dsp_reserved: dsp@...00000 {
> > >   			reg = <0 0x92400000 0 0x2000000>;
> > >   			no-map;
> > This seems broken.
> 
> 
> You're right.
> Already answered to this here:
> https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg2558691.html

Sorry, saw it to late..

Regards,
  Marco