mx6sabresd: Trying to use qca,clk-out-frequency

Hi,

Now that mx6sabresd board has Ethernet working again with this fix: https://lists.denx.de/pipermail/u-boot/2020-June/416623.html

,I would like to remove the ar8031_phy_fixup() from board/freescale/mx6sabresd/mx6sabresd.c.

Here is what I tested so far: https://pastebin.com/raw/cQW5RmXW

However, I see that in drivers/net/phy/atheros.c the

if (!ofnode_read_u32(node, "qca,clk-out-frequency", &freq)) {

condition is never executed, so qca,clk-out-frequency configuration does not take effect.

Any ideas why this happens?

Thanks