linux-kernel - Re: [PATCH v3 0/6] Configure imx8mp dsp node for rproc usage

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Message-ID: <f1382b53-d2b1-4622-af37-69431f764f79@nxp.com>
Date: Wed, 11 Dec 2024 11:21:51 +0200
From: Iuliana Prodan <iuliana.prodan@....com>
To: Daniel Baluta <daniel.baluta@....com>, shawnguo@...nel.org,
 s.hauer@...gutronix.de, kernel@...gutronix.de, robh@...nel.org
Cc: 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, a.fatoum@...gutronix.de
Subject: Re: [PATCH v3 0/6] Configure imx8mp dsp node for rproc usage


On 12/10/2024 2:53 PM, Daniel Baluta 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 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 v1:
>          - document syscon compatible as pointed by Peng Fan
>          - do not disable dsp_reserved node in the dtsi file as pointed
>            by Ahmad Fatoum.
> Changes since v2:
>          - Fix dts example in patch 4/6
>          - Frank Li commented that we should handle the reset using the reset
>          interface. I have two objections on this: we are using some bits from audiomix
>          for reset together some other bits from DAP region. Also, the implementation is already upstream!
>          Frank Li agreed that it's up to Rob opinion on this.
>
> Daniel Baluta (6):
>    arm64: dts: imx8mp: Add mu2 root clock
>    arm64: dts: imx8mp: Configure dsp node for rproc usage
>    arm64: dts: imx8mp: Add DSP clocks
>    dt-bindings: clock: imx8mp: Add syscon compatible
>    arm64: dts: imx8mp: Add fsl,dsp-ctrl property for dsp
>    arm64: dts: Add dsp rproc related mem regions
For the series:

Reviewed-by: Iuliana Prodan <iuliana.prodan@....com>

Thanks,
Iulia