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Hardware pairs > > > are allocated dynamically at stream open time; each active stream > > > direction (playback or capture) on a port consumes one hardware pair. > > > > > > For backwards compatibility, keep the old single port property but mark > > > it deprecated. A schema constraint (not: required: [port, ports]) ensures > > > that both forms cannot be used at the same time. The binding example is > > > updated to show the preferred ports form. > > > > > > No existing upstream DTS file for fsl,imx-asrc uses the previously > > > documented single 'port' node, so this change does not break any > > > in-tree device tree. > > > > if no existing upstream DTS file use it, you can direct replace with ports > > And what about all other users of this binding? Kernel is that only known user. Uboot don't use this part. Frank > > Best regards, > Krzysztof >