On 9/19/18 10:20 AM, Andrew Lunn wrote:
I suspect that is not going to be easy. Last time i looked, the ACPI standard had nothing about MDIO busses or PHYs. Marcin Wojtas did some work in this area a while back for the mvpp2, but if i remember correctly, he worked around this by simply not having a PHY when using ACPI, and making use of a MAC interrupt which indicated when there was link. Whoever implements this first needs to be an ACPI expert and probably needs to write it up and submit it as an amendment to the ACPI standard.
If that's what it takes, then so be it. But adding DT support for a device that is only used on ACPI platforms is not a worthwhile endeavor.
After ACPI support is merged, Dongsheng can choose to add DT support to maintain parity, if he wants. Maybe one day the MSM developers will use the upstream driver on one of their SOCs.
