HDMI Runtime Error when using rebuilt zcu104 base overlay

leonard · September 8, 2021, 5:10am

Hi ! I try to rebuild the base overlay to use the HDMI module.
After I rebuilt the overlay and started to test it on jupyter notebook, I got the following error.
I had never seen this error when I using rebuilt base overlay of pynq-z2. I’m wondering whether there are additional settings required to run the HDMI on ZCU104?

marioruiz · September 8, 2021, 7:44am

The base overlay has its own driver to initialize the necessary components. In this case you need to initialize the clocks associated to HDMI. That’s the reason why the base overlay is downloaded with the BaseOverlay object.

If you want to use the Overlay object, you need to initialize the clocks

github.com

Xilinx/PYNQ/blob/master/boards/ZCU104/base/base.py#L31-L46


      
          def _init_clocks(self):
              # Wait for AXI reset to de-assert
              time.sleep(0.2)
              # Deassert HDMI clock reset
              self.reset_control.channel1[0].write(1)
              # Wait 200 ms for the clock to come out of reset
              time.sleep(0.2)
          
          
    self.video.phy.vid_phy_controller.initialize()
              self.video.hdmi_in.frontend.set_phy(
                      self.video.phy.vid_phy_controller)
              self.video.hdmi_out.frontend.set_phy(
                      self.video.phy.vid_phy_controller)
              dp159 = DP159(self.fmch_axi_iic, 0x5C)
              idt = IDT_8T49N24(self.fmch_axi_iic, 0x6C)
              self.video.hdmi_out.frontend.clocks = [dp159, idt]

Mario

leonard · September 8, 2021, 10:51am

OK! Thank for your reply!

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HDMI Runtime Error when using rebuilt zcu104 base overlay

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