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platforms/trellisboard: fix "sdcard" pads, add "spisdcard" pads 

Add support for SPI-mode SDCard interface. Also, add pull-up and
slew constraints to the standard sdcard interface.

Signed-off-by: Gabriel Somlo <gsomlo@gmail.com>
This commit is contained in:
Gabriel Somlo 2020-03-19 09:53:09 -04:00
parent d0d047dfa4
commit 396b0383c8
1 changed files with 11 additions and 3 deletions
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16
litex_boards/platforms/trellisboard.py
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@ -140,11 +140,19 @@ _io = [
Subsignal("uart_cts_n", Pins("P7"), IOStandard("LVCMOS33")) Subsignal("uart_cts_n", Pins("P7"), IOStandard("LVCMOS33"))
), ),
("sdcard", 0, ("spisdcard", 0,
Subsignal("data", Pins("AG1 AJ1 AH1 AK1")),
Subsignal("clk", Pins("AK3")), Subsignal("clk", Pins("AK3")),
Subsignal("cmd", Pins("AH3")), Subsignal("mosi", Pins("AH3"), Misc("PULLMODE=UP")),
IOStandard("LVCMOS33") Subsignal("cs_n", Pins("AK1"), Misc("PULLMODE=UP")),
Subsignal("miso", Pins("AG1"), Misc("PULLMODE=UP")),
IOStandard("LVCMOS33"), Misc("SLEW=FAST")
),
("sdcard", 0,
Subsignal("clk", Pins("AK3")),
Subsignal("cmd", Pins("AH3"), Misc("PULLMODE=UP")),
Subsignal("data", Pins("AG1 AJ1 AH1 AK1"), Misc("PULLMODE=UP")),
IOStandard("LVCMOS33"), Misc("SLEW=FAST")
), ),
("spiflash4x", 0, ("spiflash4x", 0,