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

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Message-Id: <20241210125338.104959-1-daniel.baluta@nxp.com>
Date: Tue, 10 Dec 2024 14:53:32 +0200
From: Daniel Baluta <daniel.baluta@....com>
To: 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,
	iuliana.prodan@....com,
	a.fatoum@...gutronix.de,
	Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH v3 0/6] Configure imx8mp dsp node for rproc usage

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

 .../bindings/clock/imx8mp-audiomix.yaml       |  6 +++--
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts  | 10 +++++++++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi     | 22 ++++++++++++-------
 3 files changed, 28 insertions(+), 10 deletions(-)

-- 
2.25.1