On Thu, Oct 31, 2024 at 01:14:22PM +0100, Heiko Stübner wrote: > Am Donnerstag, 31. Oktober 2024, 01:49:07 CET schrieb Jimmy Hon: > > On Wed, Oct 30, 2024 at 2:25 PM Chris Morgan <macroalpha82@xxxxxxxxx> wrote: > > > > > > From: Chris Morgan <macromorgan@xxxxxxxxxxx> > > > > > > Enable the HDMI0 port for the Indiedroid Nova. The schematics available > > > show the hdmim0_rx_hpdin is connected, so this pinctrl is enabled in > > > contrast with the other rk3588 boards. > > > > Which pin in the schematic [1] (page 24) does it refer to? It's not > > obvious how to match it up. > > The schematic looks the same as the Rock 5B schematic [2] (page 31) > > and the Rock 5B dts uses the default pinctrl [3] > > > > Note: The vendor kernel DTS doesn't modify the pinctrl either. [4] > > > > If you try using the default pinctrl (not overriding), does HDMI not work? > > I stumbled over the same issue recently for our Theobroma boards too. > > From the Indiedroid schematics, you can see that the hdmim0_rx_hpdin > pin is gpio4_b6, which in their board is connected to the hdmi0_tx_on_h > functionality, which controls the output functionality between hdmi2.0-tmds > and hdmi2.1-frl modes. > > The hdmi-driver currently only does hdmi2.0 but normally, on most boards > I've seen so far, this pin has a default pull to set hdmi2.0 anyway, so other > boards don't need that. > > So for one, please check if the nova can run without it, but if a pin > setting is needed, please define a new per-board one, labeling it correctly > for this hdmi0_tx_on_h functionality and do not re-use the hdmi-rx > pin-setting. I can confirm it will run without it, so I'll simply set the pinctrl to be the same as the other boards. Thank you, Chris > > > Heiko > > >
