[PATCH 0/6] Add support for RK3588 DisplayPort Controller

[Andy Yan]

Hi Piotr,

在 2025-03-01 04:30:33，"Piotr Oniszczuk" <piotr.oniszczuk at gmail.com> 写道：
>
>
>> Wiadomość napisana przez Andy Yan <andyshrk at 163.com> w dniu 23 lut 2025, o godz. 12:30:
>> 
>> From: Andy Yan <andy.yan at rock-chips.com>
>> 
>> 
>> 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 in 1080p and 4K at 60 YCbCr4:2:0 modes; the ALT/Type-C mode
>> hasn't been tested yet, but I suspect it will likely work. HDCP and audio
>> features remain unimplemented. For RK3588, it's only support SST, while in
>> the upcoming RK3576, it can support MST output.
>> 
>
>Andy,
>
>Is tis series enough to get usbc1/dp1 working as video output ?
>(assuming i will add necessary code in dt) 
>
>rock5-itx has second hdmi port using usbc1/dp1 lanes 2,3 to ra620 dp->hdmi converter
>
>is it worth to play with this or it is too early?

I think you could give it a try if it using the Standard DP（non-ALT mode） port for output. 
Since I don't currently have a development board with DP1 output available, I haven't been
able to test it yet. As for the Type-C Alternate Mode output, some patches are still required 
I'll  send it with V2 tomorrow or next week.
Feel free to let me know if If you encounter any issues。


>