Hardware
/
litex-boards
mirror of https://github.com/litex-hub/litex-boards.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

ulx3s: Integrate Video Terminal and Video Framebuffer with new VideoECP5HDMIPHY.

This commit is contained in:
Florent Kermarrec 2021-03-18 14:41:18 +01:00
parent 4330769add
commit ddd46205aa
2 changed files with 53 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
litex_boards/platforms/ulx3s.py
View File

@ -96,6 +96,21 @@ _io_common = [
IOStandard("LVCMOS33")
),
# GPDI
("gpdi", 0,
Subsignal("clk_p", Pins("A17"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
#Subsignal("clk_n", Pins("B18"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
Subsignal("data0_p", Pins("A12"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
#Subsignal("data0_n", Pins("A13"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
Subsignal("data1_p", Pins("A14"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
#Subsignal("data1_n", Pins("C14"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
Subsignal("data2_p", Pins("A16"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
#Subsignal("data2_n", Pins("B16"), IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
#Subsignal("cec", Pins("A18"), IOStandard("LVCMOS33"), Misc("PULLMODE=UP")),
#Subsignal("scl", Pins("E19"), IOStandard("LVCMOS33"), Misc("PULLMODE=UP")),
#Subsignal("sda", Pins("B19"), IOStandard("LVCMOS33"), Misc("PULLMODE=UP"))
),
# OLED
("oled_spi", 0,
Subsignal("clk", Pins("P4")),

48
litex_boards/targets/ulx3s.py
View File

@ -24,6 +24,7 @@ from litex.soc.cores.clock import *
from litex.soc.integration.soc_core import *
from litex.soc.integration.soc_sdram import *
from litex.soc.integration.builder import *
from litex.soc.cores.video import VideoECP5HDMIPHY
from litex.soc.cores.led import LedChaser
from litex.soc.cores.spi import SPIMaster
from litex.soc.cores.gpio import GPIOOut
@ -34,7 +35,7 @@ from litedram.phy import GENSDRPHY, HalfRateGENSDRPHY
# CRG ----------------------------------------------------------------------------------------------
class _CRG(Module):
def __init__(self, platform, sys_clk_freq, with_usb_pll=False, sdram_rate="1:1"):
def __init__(self, platform, sys_clk_freq, with_usb_pll=False, with_video_pll=False, sdram_rate="1:1"):
self.rst = Signal()
self.clock_domains.cd_sys = ClockDomain()
if sdram_rate == "1:2":
@ -70,6 +71,16 @@ class _CRG(Module):
usb_pll.create_clkout(self.cd_usb_12, 12e6, margin=0)
usb_pll.create_clkout(self.cd_usb_48, 48e6, margin=0)
# Video PLL
if with_video_pll:
self.submodules.video_pll = video_pll = ECP5PLL()
self.comb += video_pll.reset.eq(rst | self.rst)
video_pll.register_clkin(clk25, 25e6)
self.clock_domains.cd_hdmi = ClockDomain()
self.clock_domains.cd_hdmi5x = ClockDomain()
video_pll.create_clkout(self.cd_hdmi, 40e6, margin=0)
video_pll.create_clkout(self.cd_hdmi5x, 200e6, margin=0)
# SDRAM clock
sdram_clk = ClockSignal("sys2x_ps" if sdram_rate == "1:2" else "sys_ps")
self.specials += DDROutput(1, 0, platform.request("sdram_clock"), sdram_clk)
@ -81,7 +92,8 @@ class _CRG(Module):
class BaseSoC(SoCCore):
def __init__(self, device="LFE5U-45F", revision="2.0", toolchain="trellis",
sys_clk_freq=int(50e6), sdram_module_cls="MT48LC16M16", sdram_rate="1:1", spiflash=False, **kwargs):
sys_clk_freq=int(50e6), sdram_module_cls="MT48LC16M16", sdram_rate="1:1",
with_video_terminal=False, with_video_framebuffer=False, spiflash=False, **kwargs):
platform = ulx3s.Platform(device=device, revision=revision, toolchain=toolchain)
if spiflash:
self.mem_map = {**SoCCore.mem_map, **{"spiflash": 0x80000000}}
@ -93,8 +105,9 @@ class BaseSoC(SoCCore):
**kwargs)
# CRG --------------------------------------------------------------------------------------
with_usb_pll = kwargs.get("uart_name", None) == "usb_acm"
self.submodules.crg = _CRG(platform, sys_clk_freq, with_usb_pll, sdram_rate=sdram_rate)
with_usb_pll = kwargs.get("uart_name", None) == "usb_acm"
with_video_pll = with_video_terminal or with_video_framebuffer
self.submodules.crg = _CRG(platform, sys_clk_freq, with_usb_pll, with_video_pll, sdram_rate=sdram_rate)
# SDR SDRAM --------------------------------------------------------------------------------
if not self.integrated_main_ram_size:
@ -110,6 +123,14 @@ class BaseSoC(SoCCore):
l2_cache_reverse = True
)
# Video ------------------------------------------------------------------------------------
if with_video_terminal or with_video_framebuffer:
self.submodules.videophy = VideoECP5HDMIPHY(platform.request("gpdi"), clock_domain="hdmi")
if with_video_terminal:
self.add_video_terminal(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
if with_video_framebuffer:
self.add_video_framebuffer(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi")
# Leds -------------------------------------------------------------------------------------
self.submodules.leds = LedChaser(
pads = platform.request_all("user_led"),
@ -144,19 +165,24 @@ def main():
sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support")
parser.add_argument("--with-oled", action="store_true", help="Enable SDD1331 OLED support")
parser.add_argument("--sdram-rate", default="1:1", help="SDRAM Rate: 1:1 Full Rate (default), 1:2 Half Rate")
viopts = parser.add_mutually_exclusive_group()
viopts.add_argument("--with-video-terminal", action="store_true", help="Enable Video Terminal (HDMI)")
viopts.add_argument("--with-video-framebuffer", action="store_true", help="Enable Video Framebuffer (HDMI)")
builder_args(parser)
soc_sdram_args(parser)
trellis_args(parser)
args = parser.parse_args()
soc = BaseSoC(
device = args.device,
revision = args.revision,
toolchain = args.toolchain,
sys_clk_freq = int(float(args.sys_clk_freq)),
sdram_module_cls = args.sdram_module,
sdram_rate = args.sdram_rate,
spiflash = args.with_spiflash,
device = args.device,
revision = args.revision,
toolchain = args.toolchain,
sys_clk_freq = int(float(args.sys_clk_freq)),
sdram_module_cls = args.sdram_module,
sdram_rate = args.sdram_rate,
with_video_terminal = args.with_video_terminal,
with_video_framebuffer = args.with_video_framebuffer,
spiflash = args.with_spiflash,
**soc_sdram_argdict(args))
if args.with_spi_sdcard:
soc.add_spi_sdcard()