Hi Wolfram, On Tue, 18 Mar 2025 at 09:54, Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote: > Renesas RZ/N1D has this UART with and without DMA support. Currently, > only the binding with DMA support is described. Add the missing one > without DMA support which can fallback even more. > > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Thanks for your patch! > --- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml > +++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml > @@ -13,6 +13,20 @@ allOf: > - $ref: serial.yaml# > - $ref: rs485.yaml# > > + - if: > + properties: > + compatible: > + items: > + - enum: > + - renesas,r9a06g032-uart > + - renesas,r9a06g033-uart I think you can simplify by replacing the enum by - pattern: "^renesas,.*$" > + - const: renesas,rzn1-uart > + - const: snps,dw-apb-uart > + then: > + properties: > + dmas: false > + dma-names: false > + > - if: > properties: > compatible: Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds