[PATCH v7 0/3] remoteproc: imx_rpoc: use memory-region-names to avoid hidden ABI.

[Mathieu Poirier]

Please change every occurence of "hidden" with "implicit", here and throughout.

On Tue, Oct 20, 2026 at 12:50:20PM -0400, Frank.Li at oss.nxp.com wrote:
> The driver currently derives the memory region type from the referenced
> memory node name, creating a hidden DT ABI.
> 
> rsc_table: rsc-table at 90000000
>            ^^^^^^^^
> {	ret  = <0x90000000>;
> 	no-map;
> }
> 
> m4 {
> 	...
> 	memory-region = <&rsc_table>;
> }
> 
> Current require node name have to be rsc-table, but no any binding doc
> to restrict it.
> 
> Since memory node names are not constrained by the binding, incorrect names
> can silently pass DT validation, as seen in examples using "vdevbuffer"
> instead of "vdev0buffer" ([1] and [2]).
> 
> Add optional memory-region-names property to define such ABI. To keep
> back compactiblity, use "optional".
> 
> Link: https://lore.kernel.org/imx/a3602ef8-2b77-4cc3-adef-2c4cba08a5d9@nabladev.com/ [1]
> Link: https://lore.kernel.org/imx/alexXTYQHUs76J7v@SMW015318/T/#mb9dc709ff3adc24d9db6d30c973f37b580f6f1f9 [2]
> 
> Prevous version
> https://lore.kernel.org/imx/ail0sH1UhnQBPRkr@SMW015318/
> 
> ---
> Changes in v7:
> - move imx_rproc_rmem_to_resource() close to caller
> - collect Francesco and peng fan's review tag
> - Link to v6: https://patch.msgid.link/20261019-memory-region-name-v6-0-2e46b2e7d667@nxp.com
> 
> Changes in v6:
> - collect rob's review-by tags for binding
> - move imx_rproc_rmem_to_resource to c file
> - dts move related memory region node into overlay file
> - Link to v5: https://patch.msgid.link/20261015-memory-region-name-v5-0-abc358b39a96@nxp.com
> 
> Changes in v5:
> - fix binding region-memory-names's pattern
> - add vdev1vring0 and vdev1vring1 at dts
> - collect pan peng's review by tags
> - Link to v4: https://patch.msgid.link/20260917-memory-region-name-v4-0-260755920ebf@nxp.com
> 
> Change in v3
> - rephrase commit message and cover letter to correct descritpion and
> reasons.
> 
> To: Bjorn Andersson <andersson at kernel.org>
> To: Mathieu Poirier <mathieu.poirier at linaro.org>
> To: Rob Herring <robh at kernel.org>
> To: Krzysztof Kozlowski <krzk+dt at kernel.org>
> To: Conor Dooley <conor+dt at kernel.org>
> To: Sascha Hauer <s.hauer at pengutronix.de>
> To: Pengutronix Kernel Team <kernel at pengutronix.de>
> To: Fabio Estevam <festevam at gmail.com>
> To: Peng Fan <peng.fan at nxp.com>
> Cc: linux-remoteproc at vger.kernel.org
> Cc: devicetree at vger.kernel.org
> Cc: imx at lists.linux.dev
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> Cc: Laurentiu Mihalcea <laurentiu.mihalcea at nxp.com>
> Signed-off-by: Frank Li <Frank.Li at nxp.com>
> 
> ---
> Laurentiu Mihalcea (3):
>       dt-bindings: remoteproc: imx_rproc: document memory-region-names to avoid hidden ABI
>       remoteproc: imx_rpoc: use memory-region-names to avoid hidden ABI
>       arm64: dts: freescale: add DT overlay for MX95-15x15-FRDM RPMSG usage
> 
>  .../bindings/remoteproc/fsl,imx-rproc.yaml         | 11 +++
>  arch/arm64/boot/dts/freescale/Makefile             |  3 +
>  .../boot/dts/freescale/imx95-15x15-frdm-rpmsg.dtso | 81 ++++++++++++++++++++++
>  arch/arm64/boot/dts/freescale/imx95-15x15-frdm.dts | 31 ---------
>  drivers/remoteproc/imx_rproc.c                     | 32 ++++++++-
>  5 files changed, 125 insertions(+), 33 deletions(-)
> ---
> base-commit: d419d682257d813f6cb7a28e42b35d0edf4ad038
> change-id: 20260915-memory-region-name-f950eea2b78d
> 
> Best regards,
> --  
> Frank Li <Frank.Li at nxp.com>
>