[PATCH net-next 0/3] net: phy: motorcomm: Enable analog frontend DAC on yt8531S

[Maxime Chevallier <maxime.chevallier@bootlin.com>]

In the process of getting more stmmac boards to run tests on, I've
acquired a nice and inexpensive YT6801 PCIe card, that can do
10/100/1000BaseT. It uses stmmac's PCI variant dwmac-motorcomm, as well
as an integrated Motorcomm PHY (the YT8531S).

However while testing the card, I had link-up maybe once every 10
reboots, and no traffic whatsoever. Comparing with the out-of-tree
driver provided by Motorcomm, it was found that some Analog Frontend DAC
needs a clock to be enabled, and indeed it fixed the issue.

As I don't know much about this device, this series implements the DAC
CLK configuration in the YT8531S driver only for the integrated version,
that uses the GMII interface.

I split that into 3 commits, the first 2 are splitting-out the YT8521
and YT8531S config_init(). The third commit adds the DAC configuration.

This was tested on YT6801, which now reliably reports link up.

Maxime Chevallier (3):
  net: phy: motorcomm: Split yt8521_config_init() page management
  net: phy: motorcomm: Add a dedicated .config_init for YT8531S
  net: phy: motorcomm: Enable analog frontend on YT8531S

 drivers/net/phy/motorcomm.c | 76 ++++++++++++++++++++++++++-----------
 1 file changed, 54 insertions(+), 22 deletions(-)

-- 
2.55.0