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12 Commits

Author SHA1 Message Date
Florent Kermarrec beccecf59f orangecrab: reduce DDR3 power consumption/heat and get back USB PLL to CRGSDRAM. 
- disable DQ termination.
- disable RTT_NOM.
- drive VCCIO/GND pads.

Reduce current from 0.25A to 0.12A with: ./orangecrab.py --uart-name=usb_acm --sys-clk-freq=48e6.
Still working at 96MHz, 0.17A with: ./orangecrab.py --uart-name=usb_acm --sys-clk-freq=96e6.

See https://github.com/enjoy-digital/litedram/issues/216.
 2020-08-28 20:01:54 +02:00
Florent Kermarrec 1781be166a general: add SPDX License identifier to header and specify files are part of LiteX-Boards. 2020-08-23 15:00:17 +02:00
Greg Davill a461f5ac59 orangecrab: add usb, rst_n signals for r0.1 
- fix standard io extensions
 - Use newly assigned code for orangecrab 1209:5af0
 2020-07-09 19:56:32 +09:30
Florent Kermarrec 40fbbbbebc platforms/orangecrab: add sdcard pins on r0_2. 2020-07-06 17:48:48 +02:00
Florent Kermarrec c94cbae0c0 orangecrab: add user_led (RGB leds), DFUProg and --load support. 2020-06-11 19:21:40 +02:00
Florent Kermarrec 1f88a9d5ec platforms: make sure clocks inputs are constraints on all platforms. 
Also use new loose lookup_request to simplify constraints.
 2020-05-05 11:45:41 +02:00
Florent Kermarrec 2cf3c3e845 platforms: cosmetic cleanups. 2020-04-09 23:05:13 +02:00
Florent Kermarrec 6e6b6dac55 platforms/orangecrab: add spisdcard pins. 2020-03-25 10:21:57 +01:00
Greg Davill eb35ec92ba orangecrab: combine revisions in target 2020-03-23 09:20:01 +10:30
Greg Davill 159360da2c orangecrab: Add r0.2 support 2020-03-22 21:04:07 +10:30
Greg Davill 88d3f1d63e orangecrab: r0.1 OrangeCrab fixes 2020-03-22 20:14:29 +10:30
Florent Kermarrec 8211aca2e8 Avoid Official/Partner/Community differentiation: use same directory for all platforms/targets. 
We initially wanted to provide different level of support for the platforms/targets, mainly
to avoid too much maintenance and let each contributor update its contributed platforms and
targets, but it's easier to update all platforms/targets all-together when LiteX evolves or
changes (and that's what has been done on litex-boards since the creation of the repository).
So let just simplify things and avoid this differentiation.
 2020-02-03 09:36:30 +01:00