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For this to work, >> the PHY needs to be in a working state. >> >> Unfortunately, the net subsystem doesn't control the PHY reset GPIO when >> attempting to auto-detect the PHY. This means the PHY needs to be in a >> working state when entering the Linux kernel. This historically has been >> the case for this device, but only because the bootloader was taking >> care of initializing the Ethernet controller even when not using it. >> We're attempting to support the removal of the network stack in the >> bootloader, which means the Linux kernel will be entered with the PHY >> still in reset and now Ethernet doesn't work anymore. >> >> The devices in the field only ever had a TI DP83825, so let's simply >> bypass the auto-detection mechanism entirely by passing the appropriate >> PHY IDs via the compatible. >> >> Cc: stable@vger.kernel.org >> Fixes: bb510ddc9d3e ("arm64: dts: rockchip: add px30-cobra base dtsi and board variants") >> Signed-off-by: Quentin Schulz > > What is the justification for stable? > Bootloader without network stack = no network in Linux. Cheers, Quentin