07-16-2018, 04:52 PM
just as fyi I went ahead and took a look at the pin-outs and compared the odroid-xu4, odroid-c2 and rock64 emmc connectors
They appear mostly the same with the exception of two pins.
In the rock64 pins 15 and 13 are tied directly to GND.
In the Odroid-C2 and Odroid-XU4 pin 15 is tied to a signal called RCLK and pin 13 is tied to a signal called CDN. The RCLK goes to a pin named for RDQS. The CDN pin lands different places for the C2 or XU4. In the XU4 it goes to the main chip and appears to be used for something with controlling the eMMC module and the C2 it lands someplace else.
Other than these 2x pins the rest of the pin-out is the same, I'm not sure how important these two signals are or what they're used for in operating the eMMC module. If the hardkernel modules can be used without them in the Rock64 I don't know.
I also checked the libre computer renegade (ROC-3328-CC) eMMC module pin-out, which varies significantly from what is found on hardkernel's odroids and what I saw on the rock64 for the pin-arrangement.
Just thought I'd put this for reference as there is a hardware difference that hardkernel is using with their eMMC modules that is not being used by rock64 and whether hardkernel's eMMC modules can operate successfully in a rock64 without these functions being used is something I do not know.
They appear mostly the same with the exception of two pins.
In the rock64 pins 15 and 13 are tied directly to GND.
In the Odroid-C2 and Odroid-XU4 pin 15 is tied to a signal called RCLK and pin 13 is tied to a signal called CDN. The RCLK goes to a pin named for RDQS. The CDN pin lands different places for the C2 or XU4. In the XU4 it goes to the main chip and appears to be used for something with controlling the eMMC module and the C2 it lands someplace else.
Other than these 2x pins the rest of the pin-out is the same, I'm not sure how important these two signals are or what they're used for in operating the eMMC module. If the hardkernel modules can be used without them in the Rock64 I don't know.
I also checked the libre computer renegade (ROC-3328-CC) eMMC module pin-out, which varies significantly from what is found on hardkernel's odroids and what I saw on the rock64 for the pin-arrangement.
Just thought I'd put this for reference as there is a hardware difference that hardkernel is using with their eMMC modules that is not being used by rock64 and whether hardkernel's eMMC modules can operate successfully in a rock64 without these functions being used is something I do not know.
