Hello Maud， At 2025-08-30 08:46:14, "Maud Spierings" <maud_spieri...@hotmail.com> wrote: >Hello Andy, > >> There are two DW DPTX based DisplayPort Controller on rk3588 which >> are compliant with the DisplayPort Specification Version 1.4 with >> the following features: >> >> * DisplayPort 1.4a >> * Main Link: 1/2/4 lanes >> * Main Link Support 1.62Gbps, 2.7Gbps, 5.4Gbps and 8.1Gbps >> * AUX channel 1Mbps >> * Single Stream Transport(SST) >> * Multistream Transport (MST) >> * Type-C support (alternate mode) >> * HDCP 2.2, HDCP 1.3 >> * Supports up to 8/10 bits per color component >> * Supports RBG, YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0 >> * Pixel clock up to 594MHz >> * I2S, SPDIF audio interface >> >> The current version of this patch series only supports basic display outputs. >> I conducted tests with DP0 in 1080p and 4K@60 YCbCr4:2:0 modes; the >> ALT/Type-C >> mode was tested on Rock 5B > >Is there an example of this? I want to implement it for the usb-c port >on the orangepi 5 plus, but I can't quite figure out where I would have >to link the DP output endpoint to? > >The usb-c endpoints are all done. Is it to another endpoint in the >usbdp_phy? The only endpoints there seem to be outputs. Or is it >supposed to be left unconnected for the ALT/type-C mode? > >I've tried reading through all the relevant dt-bindings but can't find it.
I have a test branch for ALT/Type-C mode on Rock 5B here[1] [1]https://github.com/andyshrk/linux/commits/rk3588-dp-upstream-v6/ > >Kind regards, >Maud
