On 02/11/2022 23:44, Bjorn Andersson wrote: > On Fri, Oct 28, 2022 at 06:12:29PM -0400, Krzysztof Kozlowski wrote: >> On 27/10/2022 23:41, Bjorn Andersson wrote: >>> Add EPSS L3 compatibles for sm8350 and sc8280xp, but while at it also >>> introduce generic compatible for both qcom,osm-l3 and qcom,epss-l3. >>> >>> Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx> >>> --- >>> .../bindings/interconnect/qcom,osm-l3.yaml | 22 +++++++++++++------ >>> 1 file changed, 15 insertions(+), 7 deletions(-) >>> >>> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml >>> index bf538c0c5a81..ae0995341a78 100644 >>> --- a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml >>> +++ b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml >>> @@ -16,13 +16,21 @@ description: >>> >>> properties: >>> compatible: >>> - enum: >>> - - qcom,sc7180-osm-l3 >>> - - qcom,sc7280-epss-l3 >>> - - qcom,sc8180x-osm-l3 >>> - - qcom,sdm845-osm-l3 >>> - - qcom,sm8150-osm-l3 >>> - - qcom,sm8250-epss-l3 >>> + oneOf: >>> + items: >> >> oneOf expects a list, so this should be " - items" >> > > Ahh, thanks. Must have missed running the dt_binding_check on this one. > >>> + - enum: >>> + - qcom,sc7180-osm-l3 >>> + - qcom,sc8180x-osm-l3 >>> + - qcom,sdm845-osm-l3 >>> + - qcom,sm8150-osm-l3 >>> + - const: qcom,osm-l3 >> >> The concept is good, but are you sure all SoCs will be compatible with >> generic osm-l3? > > Per the current implementation yes, worst case if one or more of them isn't the > more specific compatible can be used to alter the behavior of that platform. > >> Why not using dedicated compatible of one soc, e.g. the >> oldest here? We already did like that for BWMON, DMA and few others. >> > > Because if we say compatible = "qcom,sc8180x-osm-l3", "qcom,sdm845-osm-l3" and > there is a quirk needed for "qcom,sdm845-osm-l3" we're forced to add a "special > case" every other *-osm-l3 in the driver. > > This way we can have a generic implementation for the qcom,osm-l3 and if we > realize that we need to quirk something for the oldest platform, we can do so > without affecting the others. True. This also means we do not really know which one is the generic implementation :) Best regards, Krzysztof
