On Tue, Nov 18, 2025 at 09:46:04AM +0100, Maxime Ripard wrote: > Hi, > > On Thu, Nov 13, 2025 at 01:29:38PM -0600, Chris Morgan wrote: > > From: Chris Morgan <[email protected]> > > > > Add support for the dw-hdmi-qp driver to handle devices with missing > > HPD pins. > > > > Since in this situation we are now polling for the EDID data via i2c > > change the error message to a debug message when we are unable to > > complete an i2c read, as a disconnected device would otherwise fill > > dmesg with i2c read errors. > > > > Signed-off-by: Chris Morgan <[email protected]> > > You must also disable any mode using the scrambler when there's no > hotplug interrupt available.
Is there a simple way to do that? I'm not seeing any references to scrambling in the current driver. Should I just limit the rate to HDMI14_MAX_TMDSCLK (340000000) under dw_hdmi_qp_bridge_tmds_char_rate_valid() if using EDID polling? A document I found online from Synopsys [1] claims that scrambling is used by default at rates above 340 (if I'm reading it right) and used opportunistically at rates below 340. Thank you, Chris [1] https://www.synopsys.com/blogs/chip-design/hdmi-scrambling-higher-data-rates.html > > Maxime
