On 27/01/2023 17:11, Sean Anderson wrote: >>>>> >>>>> .../boot/dts/freescale/fsl-ls1046a-rdb.dts | 112 ++++++++++++++++++ >>>>> drivers/phy/freescale/Kconfig | 1 + >>>> >>>> The phy driver Kconfig change shouldn't be part of this patch. >>> >>> I put it here for bisectability, since this is the point where we need >>> to enable it. But I can do this in a separate patch if you want. >> >> From DT ABI perspective, it's already broken anyway if you need to change >> kernel and DT atomically. > > AIUI new kernels must work with old device trees, but new device trees need not > work with old kernels. So a change like this is fine, since the kernel won't > touch the serdes if it isn't supplied. You used the argument "bisectability". If the patchset is not bisectable, the ABI is broken. Best regards, Krzysztof