01-08-2018, 03:13 AM
Thanks, I'll test this shortly...
I'm starting with Ayufan's kernel. I'm planning on pulling together a very minimal 64bit aarch branch.
My project was all about NTP, and getting a highly reliable, redundant and accurate stratum 1 server.
Prototype plan and layout thus far:
10/100 ethernet from 11x2 I/O for eth1
Cypress HX2VL USB 2.0 Hub provides 4 downstream ethernet ports.
Port 1 connects to RTL8152 10/100 ethernet driver for eth2
TI PoE front end on RTL8152 supports PoE recovery at class 4 (25W)
multi-output PSU includes 5v 4A and 3.3v from PoE in, with LiPo charge and auto-swapover to battery.
Cypress Port 2 connects to U-blox GPS module
Cypress Port 3 connects to Trimble GPS module
Cypress Port 4 connects to FT4232 quad port MPSS driver
FT4232 Port A currently unused
Port B runs in UART mode and provides a control interface to a Quantum CSAC
Port C runs in UART mode and provides a serial interface to the U-blox timecode
Port D runs in UART mode and provides a linux console to the Rock64
Rock64 GPIOs being used for Kernel PPS input., rotary encoder input and possibly a lower-resolution display.
I had hoped to use these for RGB 565 interface to drive an LCD. I didn't read enough of the docs.
For those wondering, the PCB that holds all this is currently 230mm x 65mm, and one end is compliant to the rock.
Cheers.
I'm starting with Ayufan's kernel. I'm planning on pulling together a very minimal 64bit aarch branch.
My project was all about NTP, and getting a highly reliable, redundant and accurate stratum 1 server.
Prototype plan and layout thus far:
10/100 ethernet from 11x2 I/O for eth1
Cypress HX2VL USB 2.0 Hub provides 4 downstream ethernet ports.
Port 1 connects to RTL8152 10/100 ethernet driver for eth2
TI PoE front end on RTL8152 supports PoE recovery at class 4 (25W)
multi-output PSU includes 5v 4A and 3.3v from PoE in, with LiPo charge and auto-swapover to battery.
Cypress Port 2 connects to U-blox GPS module
Cypress Port 3 connects to Trimble GPS module
Cypress Port 4 connects to FT4232 quad port MPSS driver
FT4232 Port A currently unused
Port B runs in UART mode and provides a control interface to a Quantum CSAC
Port C runs in UART mode and provides a serial interface to the U-blox timecode
Port D runs in UART mode and provides a linux console to the Rock64
Rock64 GPIOs being used for Kernel PPS input., rotary encoder input and possibly a lower-resolution display.
I had hoped to use these for RGB 565 interface to drive an LCD. I didn't read enough of the docs.
For those wondering, the PCB that holds all this is currently 230mm x 65mm, and one end is compliant to the rock.
Cheers.