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muselab: icesugarpro: fix HDMI output 

- enable data_n outputs
- use drive_both property of updated VideoHDMIPHY to drive both
  differential outputs
- adjust default clocking to successfully close timing
  (sysclk at 50Mhz, HDMI at 25MHz, HDMIx5 at 125MHz)
This commit is contained in:
Brian Swetland 2022-05-03 04:02:12 -07:00
parent b778ba5f70
commit ec220e4b5b
2 changed files with 11 additions and 11 deletions
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8
litex_boards/platforms/muselab_icesugar_pro.py
View File

@ -89,13 +89,13 @@ _io = [
# GPDI # GPDI
("gpdi", 0, ("gpdi", 0,
Subsignal("clk_p", Pins("E2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("clk_p", Pins("E2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
# Subsignal("clk_n", Pins("D3"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("clk_n", Pins("D3"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
Subsignal("data0_p", Pins("G1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data0_p", Pins("G1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
# Subsignal("data0_n", Pins("F1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data0_n", Pins("F1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
Subsignal("data1_p", Pins("J1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data1_p", Pins("J1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
# Subsignal("data1_n", Pins("H2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data1_n", Pins("H2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
Subsignal("data2_p", Pins("L1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data2_p", Pins("L1"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
# Subsignal("data2_n", Pins("K2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")), Subsignal("data2_n", Pins("K2"), IOStandard("LVCMOS33"), Misc("DRIVE=4")),
), ),
] ]

14
litex_boards/targets/muselab_icesugar_pro.py
View File

@ -74,8 +74,8 @@ class _CRG(Module):
video_pll.register_clkin(clk, clk_freq) video_pll.register_clkin(clk, clk_freq)
self.clock_domains.cd_hdmi = ClockDomain() self.clock_domains.cd_hdmi = ClockDomain()
self.clock_domains.cd_hdmi5x = ClockDomain() self.clock_domains.cd_hdmi5x = ClockDomain()
video_pll.create_clkout(self.cd_hdmi, 40e6, margin=0) video_pll.create_clkout(self.cd_hdmi, 25e6, margin=0)
video_pll.create_clkout(self.cd_hdmi5x, 200e6, margin=0) video_pll.create_clkout(self.cd_hdmi5x, 125e6, margin=0)
# SDRAM clock # SDRAM clock
sdram_clk = ClockSignal("sys2x_ps" if sdram_rate == "1:2" else "sys_ps") sdram_clk = ClockSignal("sys2x_ps" if sdram_rate == "1:2" else "sys_ps")
@ -84,7 +84,7 @@ class _CRG(Module):
# BaseSoC ------------------------------------------------------------------------------------------ # BaseSoC ------------------------------------------------------------------------------------------
class BaseSoC(SoCCore): class BaseSoC(SoCCore):
def __init__(self, sys_clk_freq=60e6, with_led_chaser=True, with_spi_flash=False, def __init__(self, sys_clk_freq=50e6, with_led_chaser=True, with_spi_flash=False,
use_internal_osc=False, sdram_rate="1:1", with_video_terminal=False, use_internal_osc=False, sdram_rate="1:1", with_video_terminal=False,
with_video_framebuffer=False, **kwargs): with_video_framebuffer=False, **kwargs):
platform = muselab_icesugar_pro.Platform() platform = muselab_icesugar_pro.Platform()
@ -119,11 +119,11 @@ class BaseSoC(SoCCore):
# Video ------------------------------------------------------------------------------------ # Video ------------------------------------------------------------------------------------
if with_video_terminal or with_video_framebuffer: if with_video_terminal or with_video_framebuffer:
self.submodules.videophy = VideoHDMIPHY(platform.request("gpdi"), clock_domain="hdmi") self.submodules.videophy = VideoHDMIPHY(platform.request("gpdi"), clock_domain="hdmi", drive_both=True)
if with_video_terminal: 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_framebuffer: if with_video_framebuffer:
self.add_video_framebuffer(phy=self.videophy, timings="800x600@60Hz", clock_domain="hdmi") self.add_video_framebuffer(phy=self.videophy, timings="640x480@60Hz", clock_domain="hdmi")
# Build -------------------------------------------------------------------------------------------- # Build --------------------------------------------------------------------------------------------
@ -133,7 +133,7 @@ def main():
target_group = parser.add_argument_group(title="Target options") target_group = parser.add_argument_group(title="Target options")
target_group.add_argument("--build", action="store_true", help="Build bitstream.") target_group.add_argument("--build", action="store_true", help="Build bitstream.")
target_group.add_argument("--load", action="store_true", help="Load bitstream.") target_group.add_argument("--load", action="store_true", help="Load bitstream.")
target_group.add_argument("--sys-clk-freq", default=60e6, help="System clock frequency.") target_group.add_argument("--sys-clk-freq", default=50e6, help="System clock frequency.")
sdopts = target_group.add_mutually_exclusive_group() sdopts = 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-spi-sdcard", action="store_true", help="Enable SPI-mode SDCard support.")
sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.") sdopts.add_argument("--with-sdcard", action="store_true", help="Enable SDCard support.")