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Thu, 22 Oct 2026 10:20:10 -0700 (PDT) Received: from p14s ([2604:3d09:148c:c800:9e85:9169:41c7:bc2d]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ada48bcb45sm4942014a91.16.2026.10.22.10.20.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Oct 2026 10:20:09 -0700 (PDT) Date: Thu, 22 Oct 2026 11:20:06 -0600 From: Mathieu Poirier To: Frank.Li@oss.nxp.com Cc: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Laurentiu Mihalcea , Frank Li , Francesco Valla , Daniel Baluta Subject: Re: [PATCH v7 0/3] remoteproc: imx_rpoc: use memory-region-names to avoid hidden ABI. Message-ID: References: <20261020-memory-region-name-v7-0-1413d5928340@nxp.com> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261020-memory-region-name-v7-0-1413d5928340@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261022_102012_198462_602BECA8 X-CRM114-Status: GOOD ( 22.04 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Please change every occurence of "hidden" with "implicit", here and throughout. On Tue, Oct 20, 2026 at 12:50:20PM -0400, Frank.Li@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@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 > To: Mathieu Poirier > To: Rob Herring > To: Krzysztof Kozlowski > To: Conor Dooley > To: Sascha Hauer > To: Pengutronix Kernel Team > To: Fabio Estevam > To: Peng Fan > Cc: linux-remoteproc@vger.kernel.org > Cc: devicetree@vger.kernel.org > Cc: imx@lists.linux.dev > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > Cc: Laurentiu Mihalcea > Signed-off-by: Frank Li > > --- > 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 >