linux-kernel - Re: [PATCH v3] arm64: dts: imx8mp: Add dsp node

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Message-ID: <20210726012408.GD5901@dragon>
Date:   Mon, 26 Jul 2021 09:24:09 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Daniel Baluta <daniel.baluta@....nxp.com>
Cc:     robh+dt@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        ping.bai@....com, qiangqing.zhang@....com, alice.guo@....com,
        yibin.gong@....com, linux-imx@....com, peng.fan@....com,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        daniel.baluta@...il.com, linux-kernel@...r.kernel.org,
        Daniel Baluta <daniel.baluta@....com>
Subject: Re: [PATCH v3] arm64: dts: imx8mp: Add dsp node

On Fri, Jul 23, 2021 at 02:05:40PM +0300, Daniel Baluta wrote:
> From: Daniel Baluta <daniel.baluta@....com>
> 
> i.MX8 MPlus SoC integrates Cadence HIFI4 DSP. This core runs either a
> custom firmware or the open source SOF firmware [1]
> 
> DSP device is handled by SOF OF driver found in
> sound/soc/sof/sof-of-dev.c
> 
> Notice that the DSP node makes use of:
> 	- dsp_reserved, a reserved memory region for various Audio
> 	  resources (e.g firmware loading, audio buffers, etc).
> 	- Messaging Unit (mu2) for passing notifications betweem ARM
> 	  core and DSP.
> 
> [1] https://thesofproject.github.io/latest/platforms/index.html
> Signed-off-by: Daniel Baluta <daniel.baluta@....com>

Applied, thanks!