Hi Paul, With help of enum each additional compatibility string with fall back 'rockchip,rk3288-rga' adds only 1 extra line instead of 3. See my and Heiko's response at the review of 'rockchip-saradc.yaml'. Re: [PATCH v1 1/3] dt-bindings: iio: adc: convert rockchip saradc bindings to yaml https://lore.kernel.org/lkml/a35bdff4-601e-6186-584e-9a0b88cf3dbb@xxxxxxxxx/ The response of robh when I did something similar wrong as this patch. Re: [PATCH 1/2] dt-bindings: usb: dwc2: add compatible property for rk3328 usb https://lore.kernel.org/lkml/20200310192933.GA15236@bogus/ Example of an approved patch with enum. [PATCH v2 1/2] dt-bindings: usb: dwc2: add compatible property for rk3328 usb https://lore.kernel.org/lkml/20200311122121.8912-1-jbx6244@xxxxxxxxx/ Kind regards, Johan On 5/7/20 10:23 PM, Paul Kocialkowski wrote: > Hi, > > On Thu 30 Apr 20, 23:24, Johan Jonker wrote: >> Hi Paul, >> >>> >>> Add a new compatible for the PX30 Rockchip SoC, which also features >>> a RGA block. It is compatible with the RK3288 RGA block. >>> >>> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@xxxxxxxxxxx> >>> --- >>> Documentation/devicetree/bindings/media/rockchip-rga.yaml | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/media/rockchip-rga.yaml b/Documentation/devicetree/bindings/media/rockchip-rga.yaml >>> index dd645ddccb07..740586299da9 100644 >>> --- a/Documentation/devicetree/bindings/media/rockchip-rga.yaml >>> +++ b/Documentation/devicetree/bindings/media/rockchip-rga.yaml >>> @@ -23,6 +23,9 @@ properties: >> >> >>> - items: >>> - const: rockchip,rk3228-rga >>> - const: rockchip,rk3288-rga >>> + - items: >>> + - const: rockchip,px30-rga >>> + - const: rockchip,rk3288-rga >> >> Use enum. >> >> - items: >> - enum: >> - rockchip,px30-rga >> - rockchip,rk3228-rga >> - const: rockchip,rk3288-rga > > Are you sure about this? The rk3228 above does it as I did it and other examples > like allwinner,sun4i-a10-csi.yaml appear to be doing the same too. The use of enum starts from 2 or more identical fall back strings. 'allwinner,sun4i-a10-csi.yaml' has 2 different fall back strings. properties: compatible: oneOf: - const: allwinner,sun4i-a10-csi1 - const: allwinner,sun7i-a20-csi0 - items: - const: allwinner,sun7i-a20-csi1 - const: allwinner,sun4i-a10-csi1 - items: - const: allwinner,sun8i-r40-csi0 - const: allwinner,sun7i-a20-csi0 > > The case with rockchip,rk3288-rga alone already seems covered. See yaml examples in the links above. > > Cheers, > > Paul > >>> >>> reg: >>> maxItems: 1 >>> -- >>> 2.26.0 >> >
