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platforms/arty: Add numato sd card pmod

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It has a different layout.

Thanks to David for documenting the pinout in this issue:
https://github.com/enjoy-digital/litex/issues/817

 Expansion Pin 	SD 	SPI SD 	Artix 	Arty-A7 	PMOD PIN 	PMOD Index
 2 		DATA_2 	  	D4 	JD1 		1 		0
 4 		CMD 	MOSI 	D3 	JD2 		2 		1
 6 		DATA_0 	MISO 	F4 	JD3 		3 		2
   		CD 	  	F3 	JD4 		4 		3
 1 		DATA_3 	CS_N 	E2 	JD7 		7 		4
 3 		CLK 	CLK 	D2 	JD8 		8 		5
 5 		DATA_1 	  	H2 	JD9 		9 		6
   	  		  	G2 	JD10

Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Joel Stanley 2021-01-31 23:50:43 +10:30
parent aad8154e3a
commit 2b49082696
1 changed files with 23 additions and 0 deletions
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23
litex_boards/platforms/arty.py
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@ -306,6 +306,29 @@ def sdcard_pmod_io(pmod):
]
_sdcard_pmod_io = sdcard_pmod_io("pmodd") # SDCARD PMOD on JD.
def numato_sdcard_pmod_io(pmod):
return [
# SDCard PMOD:
# https://numato.com/product/micro-sd-expansion-module/
# This adaptor does not have the card detect (CD) pin connected
("spisdcard", 0,
Subsignal("clk", Pins(f"{pmod}:5")),
Subsignal("mosi", Pins(f"{pmod}:1"), Misc("PULLUP True")),
Subsignal("cs_n", Pins(f"{pmod}:4"), Misc("PULLUP True")),
Subsignal("miso", Pins(f"{pmod}:2"), Misc("PULLUP True")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
("sdcard", 0,
Subsignal("data", Pins(f"{pmod}:2 {pmod}:6 {pmod}:0 {pmod}:4"), Misc("PULLUP True")),
Subsignal("cmd", Pins(f"{pmod}:1"), Misc("PULLUP True")),
Subsignal("clk", Pins(f"{pmod}:5")),
Misc("SLEW=FAST"),
IOStandard("LVCMOS33"),
),
]
_numato_sdcard_pmod_io = numato_sdcard_pmod_io("pmodd") # SDCARD PMOD on JD.
# Platform -----------------------------------------------------------------------------------------
class Platform(XilinxPlatform):