Hi,
In a few days I will be a proud owner of an A20-OLinuXino-LIME2-e16 board. I was reading the documentation carefuly and wondered if it is possible to wire a secondary SATA port through one of the GPIO headers?
According to the user manual (https://www.olimex.com/Products/OLinuXino/A20/A20-OLinuXino-LIME2/resources/A20-OLinuXino-LIME2-UM.pdf) page 28, the current SATA connector is connected through some capacitors to the MCU directly. So I think it should be working if I copy that and choose 4 other pins on the header and wire the secondary SATA connector to that. But how should I tell the driver which pins are which? I plan to use Debian on it if that is relevant.
Hmm, maybe I don't understand the issue properly but the A20 chip has one SATA controller. You can't directly connect two SATA devices to one SATA controller and expect them to work properly.
I was not know that the A20 has only one SATA controller.
I have made some research and find that the only way to have multiple SATA devices is to use a port multiplier or use the USB interface which is much slower.
Thank you for the answer and to force me to think :)