linux-kernel - Re: [PATCH v7 0/5] Configure imx8mp dsp node for rproc usage

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Message-ID: <CAEnQRZBFoZuiFJtzs0wCjrHJro3c=fWshRogNBnfGmkeyh-LtA@mail.gmail.com>
Date: Tue, 15 Apr 2025 10:40:32 +0300
From: Daniel Baluta <daniel.baluta@...il.com>
To: Daniel Baluta <daniel.baluta@....com>
Cc: shawnguo@...nel.org, robh@...nel.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-arm-kernel@...ts.infradead.org, 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
Subject: Re: [PATCH v7 0/5] Configure imx8mp dsp node for rproc usage

Hi Shawn,

Gentle ping.


On Thu, Mar 20, 2025 at 2:08 PM Daniel Baluta <daniel.baluta@....com> wrote:
>
> DSP found in i.MX8MP SOC can be used by multiple frameworks in order to
> enable various applications:
>         - rproc/rpmsg framework, used to load for example Zephyr samples
>         - Sound Open Firmware, used to enable various audio processing
>           pipelines.
>
> Current dsp node was configured with SOF in mind but it doesn't work
> well with imx8mp-evk dts. SOF controls audio IPs from firmware side
> while imx8mp-evk.dts preffers to control audio IPs from Linux side.
>
> So, configure 'dsp' node to be used with rproc scenario and later will
> add a separate dts or an overlay to configure the node for SOF.
>
> This patch series configures and enables dsp node to be used with rproc.
>
> Changes since v6:
>         - addressed Alexander Stein comments
>         - enable mu2 separately in patch 5/5
>         - put "status" always as the last in node definition
>
> Changes since v5:
>        - do not enable mu2 node by default
>        - fix dt_bindings errors
>
> Changes since v4:
> (https://lore.kernel.org/linux-arm-kernel/Z6zGLn3B6SVXhTV1@lizhi-Precision-Tower-5810/T/)·······························································································
>        - after comments received on v4, we implemented the run/stall
>          bits using reset controller API (changes merged ->
> https://patchwork.kernel.org/project/linux-arm-kernel/cover/20250311085812.1296243-1-daniel.baluta@nxp.com/)
>         - drop patches related to DSP run/stall/reset via syscon
>        - picked up patch related to using run_stall via reset
>          controller API.
>
>
> Daniel Baluta (5):
>   arm64: dts: imx8mp: Use resets property
>   arm64: dts: imx8mp: Add mu2 root clock
>   arm64: dts: imx8mp: Configure dsp node for rproc usage
>   arm64: dts: imx8mp: Add DSP clocks
>   arm64: dts: Enable DSP node for remoteproc usage
>
>  arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 14 +++++++++++++
>  arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 22 +++++++++++++-------
>  2 files changed, 29 insertions(+), 7 deletions(-)
>
> --
> 2.43.0
>