Re: [linux-next:master 1377/10910] arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtb: vdev0buffer@b8400000 (shared-dma-pool): Unevaluated properties are not allowed ('no-map', 'reg' were unexpected)

[Philip Li <philip.li@intel.com>]

On Mon, Sep 28, 2026 at 09:05:03PM +0200, Marek Vasut wrote:
> On 9/28/26 7:00 AM, Krzysztof Kozlowski wrote:
> > On 27/09/2026 20:06, Marek Vasut wrote:
> > > On 9/27/26 6:59 PM, Krzysztof Kozlowski wrote:
> > > > On 26/09/2026 01:00, Marek Vasut wrote:
> > > > > On 9/25/26 11:46 PM, kernel test robot wrote:
> > > > > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > > > > > head:   f5f84daefcd92d7a630066635ecea1433ed5eac7
> > > > > > commit: 9a14f327dfcbbb0fa24974cb3a928ea3d7409768 [1377/10910] arm64: dts: imx8mm: imx8mp: Add CM DTOs for Data Modul i.MX8M Mini and Plus eDM SBC
> > > > > > config: arm64-randconfig-2400-20260921 (https://download.01.org/0day-ci/archive/20260925/202609252351.5UfBIiOJ-lkp@intel.com/config)
> > > > > > compiler: aarch64-linux-gcc (GCC) 8.5.0
> > > > > > dtschema: 2026.10.dev2+g840a01d41
> > > > > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260925/202609252351.5UfBIiOJ-lkp@intel.com/reproduce)
> > > > > > 
> > > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > > > > > the same patch/commit), kindly add following tags
> > > > > > | Reported-by: kernel test robot <lkp@intel.com>
> > > > > > | Closes: https://lore.kernel.org/oe-kbuild-all/202609252351.5UfBIiOJ-lkp@intel.com/
> > > > > > 
> > > > > > dtcheck warnings: (new ones prefixed by >>)
> > > > > >       	from schema $id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml
> > > > > > > > arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-cm4.dtb: vdev0buffer@b8400000 (shared-dma-pool): Unevaluated properties are not allowed ('no-map', 'reg' were unexpected)
> > > > > >       	from schema $id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml
> > > > > > --
> > > > > >       	from schema $id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml
> > > > > > > > arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-cm7.dtb: vdev0buffer@55400000 (shared-dma-pool): Unevaluated properties are not allowed ('no-map', 'reg' were unexpected)
> > > > > >       	from schema $id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml
> > > > > +CC krzk, I just cannot reproduce this locally. Do you know what I might
> > > > > be missing here ? Thank you !
> > > > 
> > > > The things or versions listed in top of that email.
> > > Linux has plenty of examples of such shared-dma-pool/no-map entries:
> > > 
> > > arch/arm64/boot/dts/freescale/imx952-evk.dts-		vdev0buffer:
> > > vdev0buffer@88020000 {
> > > arch/arm64/boot/dts/freescale/imx952-evk.dts:			compatible =
> > > "shared-dma-pool";
> > > arch/arm64/boot/dts/freescale/imx952-evk.dts-			reg = <0 0x88020000 0
> > > 0x100000>;
> > > arch/arm64/boot/dts/freescale/imx952-evk.dts-			no-map;
> > > arch/arm64/boot/dts/freescale/imx952-evk.dts-		};
> > > 
> > > Are those broken and need to be fixed, or is it dt-schema that is broken ?
> > 
> > This could be caused by recent dtschema change, which was also recently
> > fixed. The LKP report had dtschema git version and as you can check it
> > points exactly to the version changing reserved nodes (which introduced
> > issues). Not to the latest one which fixes the issue.
> > 
> > If issue is reproduced with 840a01d but not with later, then obviously
> > everything is fine.
> I can confirm that the issue does not happen with current dt-schema/main
> 5687115902ba ("schemas: reserved-memory: Fix invalid oneOf match with
> iommu-addresses") .

Sorry for the false positive report, I will fix the bot to upgrade the dtschema
to use 2026.10.dev4+g568711590 version.

>