linux-kernel - Re: [PATCH v2 0/3] remoteproc: imx

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Message-ID: <20250619085408.GB22452@nxa18884-linux>
Date: Thu, 19 Jun 2025 16:54:08 +0800
From: Peng Fan <peng.fan@....nxp.com>
To: Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Iuliana Prodan <iuliana.prodan@....com>,
	Daniel Baluta <daniel.baluta@....com>
Cc: linux-remoteproc@...r.kernel.org, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH v2 0/3] remoteproc: imx_rproc: Support i.MX95

On Fri, Jun 06, 2025 at 09:55:11AM +0800, Peng Fan (OSS) wrote:
>i.MX95 features a Cortex-M33 core, six Cortex-A55 cores, and
>one Cortex-M7 core. The System Control Management Interface(SCMI)
>firmware runs on the M33 core. The i.MX95 SCMI firmware named System
>Manager(SM) includes vendor extension protocols, Logical Machine
>Management(LMM) protocol and CPU protocol and etc.

Ping..

Thanks,
Peng

>
>There are three cases for M7:
>(1) M7 in a separate Logical Machine(LM) that Linux couldn't control it.
>(2) M7 in a separate Logical Machine that Linux could control it using
>    LMM protocol
>(3) M7 runs in same Logical Machine as A55, so Linux could control it
>    using CPU protocol
>
>In patch 1, add fsl,lmm-id and fsl,cpu-id to indicate LM ID and CPU ID
>In patch 2, Use LMM and CPU protocol to manage M7. More info could be
>found in the patch commit log
>
>Current setup relies on pre-Linux software(U-Boot) to do
>M7 TCM ECC initialization. In future, we could add the support in Linux
>to decouple U-Boot and Linux.
>
>Patchset was tested with below boot images when the patchset based on next-20250526:
>imx-boot-variant-rpmsg-imx95-19x19-lpddr5-evk-sd.bin-flash_lpboot_sm_a55 (Use LMM protocol)
>imx-boot-variant-alt-imx95-19x19-lpddr5-evk-sd.bin-flash_alt (Use CPU protocol)
>imx-boot-imx95-19x19-lpddr5-evk-sd.bin-flash_a55 (M7 not under A55 control)
>imx-boot-imx95-19x19-lpddr5-evk-sd.bin-flash_all (M7 not under A55 control)
>
>Patchset is re-based on next-20250603.
>
>Thanks for Daniel helping review the patchset before posting out to list.
>
>Signed-off-by: Peng Fan <peng.fan@....com>
>---
>Changes in v2:
>- Typo fix in patch 2 commit message
>- Move the m7 address mapping array from patch 2 to patch 3
>- Add R-b from Daniel to patch 3
>- Link to v1: https://lore.kernel.org/r/20250604-imx95-rproc-1-v1-0-a6e5f512731c@nxp.com
>
>---
>Peng Fan (3):
>      dt-bindings: remoteproc: fsl,imx-rproc: Add support for i.MX95
>      remoteproc: imx_rproc: Add support for System Manager API
>      remoteproc: imx_rproc: Add support for i.MX95
>
> .../bindings/remoteproc/fsl,imx-rproc.yaml         |  27 ++++
> drivers/remoteproc/imx_rproc.c                     | 146 ++++++++++++++++++++-
> drivers/remoteproc/imx_rproc.h                     |   2 +
> 3 files changed, 173 insertions(+), 2 deletions(-)
>---
>base-commit: b79c044712e34fe49e7b85ffafd0bd460b5c4afa
>change-id: 20250525-imx95-rproc-1-20bb74ddc8af
>
>Best regards,
>-- 
>Peng Fan <peng.fan@....com>
>