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targets/sipeed_tang_nano_20k.py: add spi flash and hdmi support

This commit is contained in:
Andelf 2024-12-18 01:10:35 +08:00
parent 4e2d8bd84b
commit 2d25408a30
2 changed files with 64 additions and 3 deletions
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17
litex_boards/platforms/sipeed_tang_nano_20k.py
View File

@ -48,6 +48,23 @@ _io = [
IOStandard("LVCMOS33"),
),
# HDMI
("hdmi", 0,
Subsignal("clk_p", Pins("33")),
Subsignal("clk_n", Pins("34")),
Subsignal("data0_p", Pins("35")),
Subsignal("data0_n", Pins("36")),
Subsignal("data1_p", Pins("37")),
Subsignal("data1_n", Pins("38")),
Subsignal("data2_p", Pins("39")),
Subsignal("data2_n", Pins("40")),
Subsignal("hdp", Pins("26"), IOStandard("LVCMOS18")),
Subsignal("cec", Pins("25"), IOStandard("LVCMOS18")),
Subsignal("sda", Pins("53")),
Subsignal("scl", Pins("52")),
Misc("PULL_MODE=NONE"),
),
# Leds
("led_n", 0, Pins("15"), IOStandard("LVCMOS33")),
("led_n", 1, Pins("16"), IOStandard("LVCMOS33")),

50
litex_boards/targets/sipeed_tang_nano_20k.py
View File

@ -20,6 +20,7 @@ from litex.soc.integration.soc import SoCRegion
from litex.soc.integration.builder import *
from litex.soc.cores.gpio import GPIOIn
from litex.soc.cores.led import LedChaser, WS2812
from litex.soc.cores.video import VideoGowinHDMIPHY
from litedram.modules import M12L64322A # FIXME: use the real model number
from litedram.phy import GENSDRPHY
@ -29,10 +30,13 @@ from litex_boards.platforms import sipeed_tang_nano_20k
# CRG ----------------------------------------------------------------------------------------------
class _CRG(LiteXModule):
def __init__(self, platform, sys_clk_freq):
def __init__(self, platform, sys_clk_freq, with_hdmi=False):
self.rst = Signal()
self.cd_sys = ClockDomain()
self.cd_por = ClockDomain()
if with_hdmi:
self.cd_hdmi = ClockDomain()
self.cd_hdmi5x = ClockDomain()
# Clk
clk27 = platform.request("clk27")
@ -50,6 +54,19 @@ class _CRG(LiteXModule):
pll.register_clkin(clk27, 27e6)
pll.create_clkout(self.cd_sys, sys_clk_freq)
# HDMI PLL
if with_hdmi:
self.video_pll = video_pll = GW2APLL(devicename=platform.devicename, device=platform.device)
video_pll.register_clkin(clk27, 27e6)
video_pll.create_clkout(self.cd_hdmi5x, 125e6, margin=1e-2)
self.specials += Instance("CLKDIV",
p_DIV_MODE = "5",
i_RESETN = 1, # Disable reset signal.
i_CALIB = 0, # No calibration.
i_HCLKIN = self.cd_hdmi5x.clk,
o_CLKOUT = self.cd_hdmi.clk
)
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
@ -57,17 +74,26 @@ class BaseSoC(SoCCore):
with_led_chaser = True,
with_rgb_led = False,
with_buttons = True,
with_spi_flash = False,
with_video_terminal = False,
with_video_colorbars = False,
**kwargs):
platform = sipeed_tang_nano_20k.Platform(toolchain=toolchain)
with_hdmi = with_video_terminal or with_video_colorbars
# CRG --------------------------------------------------------------------------------------
self.crg = _CRG(platform, sys_clk_freq)
self.crg = _CRG(platform, sys_clk_freq, with_hdmi=with_hdmi)
# SoCCore ----------------------------------------------------------------------------------
SoCCore.__init__(self, platform, sys_clk_freq, ident="LiteX SoC on Tang Nano 20K", **kwargs)
# TODO: XTX SPI Flash
# SPI Flash: XT25F64B ----------------------------------------------------------------------
if with_spi_flash:
from litespi.modules import W25Q64 as SpiFlashModule # compatible with XT25F64B
from litespi.opcodes import SpiNorFlashOpCodes as Codes
self.add_spi_flash(mode="1x", module=SpiFlashModule(Codes.READ_1_1_1))
# SDR SDRAM --------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
@ -94,6 +120,15 @@ class BaseSoC(SoCCore):
l2_cache_size = 128,
)
# Video ------------------------------------------------------------------------------------
if with_hdmi:
self.videophy = VideoGowinHDMIPHY(platform.request("hdmi"), clock_domain="hdmi")
if with_video_terminal:
# self.add_video_terminal(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
self.add_video_terminal(phy=self.videophy, timings="640x480@60Hz", clock_domain="hdmi")
if with_video_colorbars:
self.add_video_colorbars(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.leds = LedChaser(
@ -125,14 +160,23 @@ def main():
parser = LiteXArgumentParser(platform=sipeed_tang_nano_20k.Platform, description="LiteX SoC on Tang Nano 20K.")
parser.add_target_argument("--flash", action="store_true", help="Flash Bitstream.")
parser.add_target_argument("--sys-clk-freq", default=48e6, type=float, help="System clock frequency.")
parser.add_target_argument("--with-spi-flash", action="store_true", help="Enable SPI Flash (MMAPed).")
parser.add_target_argument("--with-rbg-led", action="store_true", help="Enable WS2812 RGB Led.")
sdopts = parser.target_group.add_mutually_exclusive_group()
sdopts.add_argument("--with-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.")
viopts = parser.target_group.add_mutually_exclusive_group()
viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI).")
viopts.add_argument("--with-video-colorbars", action="store_true", help="Enable Video Colorbars (HDMI).")
args = parser.parse_args()
soc = BaseSoC(
toolchain = args.toolchain,
sys_clk_freq = args.sys_clk_freq,
with_rgb_led = args.with_rbg_led,
with_spi_flash = args.with_spi_flash,
with_video_terminal = args.with_video_terminal,
with_video_colorbars = args.with_video_colorbars,
**parser.soc_argdict
)
if args.with_spi_sdcard: