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trellisboard: Add Video Terminal/Framebuffer support and use new I2C init feature to automatically configure TP410 at startup.

This commit is contained in:
Florent Kermarrec 2022-02-02 09:51:51 +01:00
parent 4251cfa865
commit 7f4d464f1b
2 changed files with 41 additions and 14 deletions
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11
litex_boards/platforms/trellisboard.py
View File

@ -200,14 +200,13 @@ _io = [
# HDMI
("hdmi", 0,
Subsignal("d", Pins(
"C11 A11 B11 A10 B10 C10 A8 B7",
"B8 A7 C8 C9 F11 E11 E10 D10",
"F10 F9 D9 D8 C7 F8 E8 D11")),
Subsignal("r", Pins("F10 F9 D9 D8 C7 F8 E8 D11")),
Subsignal("g", Pins("B8 A7 C8 C9 F11 E11 E10 D10")),
Subsignal("b", Pins("C11 A11 B11 A10 B10 C10 A8 B7")),
Subsignal("de", Pins("F14")),
Subsignal("clk", Pins("A9")),
Subsignal("vsync", Pins("E14")),
Subsignal("hsync", Pins("F13")),
Subsignal("vsync_n", Pins("E14")),
Subsignal("hsync_n", Pins("F13")),
Subsignal("sda", Pins("D13")),
Subsignal("scl", Pins("C13")),
IOStandard("LVCMOS33")

32
litex_boards/targets/trellisboard.py
View File

@ -21,6 +21,8 @@ from litex.soc.integration.soc_core import *
from litex.soc.integration.builder import *
from litex.soc.cores.led import LedChaser
from litex.soc.cores.gpio import GPIOTristate
from litex.soc.cores.video import VideoDVIPHY
from litex.soc.cores.bitbang import I2CMaster
from litedram.modules import MT41J256M16
from litedram.phy import ECP5DDRPHY
@ -112,8 +114,13 @@ class _CRGSDRAM(Module):
# BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=int(75e6), toolchain="trellis", with_ethernet=False,
with_led_chaser=True, with_pmod_gpio=False, **kwargs):
def __init__(self, sys_clk_freq=int(75e6), toolchain="trellis",
with_ethernet = False,
with_video_terminal = False,
with_video_framebuffer = False,
with_led_chaser = True,
with_pmod_gpio = False,
**kwargs):
platform = trellisboard.Platform(toolchain=toolchain)
# SoCCore ----------------------------------------------------------------------------------
@ -145,6 +152,22 @@ class BaseSoC(SoCCore):
pads = self.platform.request("eth"))
self.add_ethernet(phy=self.ethphy)
# HDMI -------------------------------------------------------------------------------------
if with_video_terminal or with_video_framebuffer:
# PHY + TP410 I2C initialization.
hdmi_pads = platform.request("hdmi")
self.submodules.videophy = VideoDVIPHY(hdmi_pads, clock_domain="init")
self.submodules.hdmi_i2c = I2CMaster(hdmi_pads)
self.add_i2c_init_table("hdmi_i2c", i2c_addr=0x38, table=[
(0x08, 0x35) # CTL_1_MODE: Normal operation, 24-bit, HSYNC/VSYNC.
])
# Video Terminal/Framebuffer.
if with_video_terminal:
self.add_video_terminal(phy=self.videophy, timings="640x480@75Hz", clock_domain="init")
if with_video_framebuffer:
self.add_video_framebuffer(phy=self.videophy, timings="640x480@75Hz", clock_domain="init")
# Leds -------------------------------------------------------------------------------------
if with_led_chaser:
self.submodules.leds = LedChaser(
@ -165,6 +188,9 @@ def main():
parser.add_argument("--toolchain", default="trellis", help="FPGA toolchain (trellis or diamond).")
parser.add_argument("--sys-clk-freq", default=75e6, help="System clock frequency.")
parser.add_argument("--with-ethernet", action="store_true", help="Enable Ethernet support.")
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).")
sdopts = parser.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.")
@ -177,6 +203,8 @@ def main():
soc = BaseSoC(
sys_clk_freq = int(float(args.sys_clk_freq)),
with_ethernet = args.with_ethernet,
with_video_terminal = args.with_video_terminal,
with_video_framebuffer = args.with_video_framebuffer,
with_pmod_gpio = args.with_pmod_gpio,
**soc_core_argdict(args)
)