On Wed, Jun 09, 2021 at 03:57:05PM +0200, Krzysztof Kozlowski wrote: > On 09/06/2021 15:36, Miquel Raynal wrote: > > Hi Krzysztof, > > > > Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxx> wrote on Wed, 9 > > Jun 2021 14:01:10 +0200: > > > >> On 09/06/2021 10:01, Miquel Raynal wrote: > >>> Add a yaml description of this NAND controller which is described as a > >>> subnode of the SMC bus. > >>> > >>> Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx> > >>> --- > >>> .../bindings/mtd/arm,pl353-nand-r2p1.yaml | 57 +++++++++++++++++++ > >>> 1 file changed, 57 insertions(+) > >>> create mode 100644 Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml > >>> > >>> diff --git a/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml > >>> new file mode 100644 > >>> index 000000000000..e72fa14b4385 > >>> --- /dev/null > >>> +++ b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml > >>> @@ -0,0 +1,57 @@ > >>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > >>> +%YAML 1.2 > >>> +--- > >>> +$id: http://devicetree.org/schemas/mtd/arm,pl353-nand-r2p1.yaml# > >>> +$schema: http://devicetree.org/meta-schemas/core.yaml# > >>> + > >>> +title: PL353 NAND Controller device tree bindings > >>> + > >>> +allOf: > >>> + - $ref: "nand-controller.yaml" > >>> + > >>> +maintainers: > >>> + - Miquel Raynal <miquel.raynal@xxxxxxxxxxx> > >>> + - Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx> > >>> + > >>> +properties: > >>> + compatible: > >>> + items: > >>> + - enum: > >> > >> That's not an enum, but simple const without items. > > > > Ok. > > > >> > >>> + - arm,pl353-nand-r2p1 > >>> + > >>> + reg: > >>> + items: > >>> + - items: > >>> + - description: CS with regard to the parent ranges property > >>> + - description: Offset of the memory region requested by the device > >>> + - description: Length of the memory region requested by the device > >> > >> Doesn't it depend on parent's address/size cells? > > > > Yes, but as the child nodes are not defined in the parent's binding > > (ie. the SMC) I think it's interesting to have them defined here, no? > > The trouble is if parent decides to have different address/size cells. > The schema will stop matching. I am actually not that sure if such case > is real since the pl353 NAND part will usually be connected to pl353 > SMC. However the schema now hard-codes specific dependency against > parent schema/node. > > Rob, > Maybe you have here some thoughts? I think it is fine given the parent child coupling. Rob
