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terasic_deca: add SPI SD card support

This commit is contained in:
stone3311 2022-12-28 02:13:06 +01:00
parent 4e06e5ff9c
commit 6cfb56bb07
2 changed files with 40 additions and 1 deletions
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18
litex_boards/platforms/terasic_deca.py
View File

@ -174,6 +174,24 @@ _io = [
IOStandard("1.5 V")
),
# SPI SDCard.
("spisdcard", 0,
Subsignal("clk", Pins("T20")),
Subsignal("cs_n", Pins("R20")),
Subsignal("mosi", Pins("T21")),
Subsignal("miso", Pins("R18")),
IOStandard("1.5 V")
),
("spisdcard_aux", 0,
Subsignal("sel", Pins("P13"), IOStandard("3.3-V LVTTL")),
Subsignal("cmd_dir", Pins("U22")),
Subsignal("d0_dir", Pins("T22")),
Subsignal("d123_dir", Pins("U21")),
Subsignal("dat1", Pins("T18")),
Subsignal("dat2", Pins("T19")),
IOStandard("1.5 V")
),
# MII Ethernet.
("eth_clocks", 0,
Subsignal("tx", Pins("T5")),

23
litex_boards/targets/terasic_deca.py
View File

@ -61,6 +61,7 @@ class BaseSoC(SoCCore):
with_uartbone = False,
with_jtagbone = False,
with_video_terminal = False,
with_spi_sdcard = False,
with_ethernet = False,
with_etherbone = False,
eth_ip = "192.168.1.50",
@ -90,7 +91,7 @@ class BaseSoC(SoCCore):
# JTAGbone ---------------------------------------------------------------------------------
if with_jtagbone:
self.add_jtagbone()
# Ethernet ---------------------------------------------------------------------------------
if with_ethernet or with_etherbone:
self.platform.toolchain.additional_sdc_commands += [
@ -113,6 +114,24 @@ class BaseSoC(SoCCore):
self.videophy = VideoDVIPHY(platform.request("hdmi"), clock_domain="hdmi")
self.add_video_terminal(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
# SPI SD card ------------------------------------------------------------------------------
if with_spi_sdcard:
self.add_spi_sdcard()
sd_aux = self.platform.request("spisdcard_aux")
# Set the SD card supply to 3.3V
self.comb += sd_aux.sel.eq(0)
# Set the direction of the level shifter (0 = SD to FPGA; 1 = FPGA to SD)
self.comb += sd_aux.cmd_dir.eq(1)
self.comb += sd_aux.d0_dir.eq(0)
self.comb += sd_aux.d123_dir.eq(1)
# Keep the unused data lines high
self.comb += sd_aux.dat1.eq(1)
self.comb += sd_aux.dat2.eq(1)
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.leds = LedChaser(
@ -133,6 +152,7 @@ def main():
parser.add_target_argument("--with-uartbone", action="store_true", help="Enable UARTbone support.")
parser.add_target_argument("--with-jtagbone", action="store_true", help="Enable JTAGbone support.")
parser.add_target_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (VGA).")
parser.add_target_argument("--with-spi-sdcard", action="store_true", help="Enable SPI SD card controller.")
args = parser.parse_args()
soc = BaseSoC(
@ -144,6 +164,7 @@ def main():
with_uartbone = args.with_uartbone,
with_jtagbone = args.with_jtagbone,
with_video_terminal = args.with_video_terminal,
with_spi_sdcard = args.with_spi_sdcard,
**parser.soc_argdict
)
builder = Builder(soc, **parser.builder_argdict)