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Contributor
Contributor
84 Views
Registered: ‎07-03-2019

Xilinx Display port drivers for both RXSS and TXSS for PL part

Hi all,

I am currently working on my zynq board to implement the display port,both receiver and transmitter.

Can anyone please tell me that where i can  get those PL Receiver and Transmitter drivers to implement on any zynq board.

https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842105/ZynqMP+DisplayPort+Linux+driver

In the above link i found One example for Display Port But I want to know that whether that example is based on PL or PS.

Regards,

Vijay.

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2 Replies
Moderator
Moderator
53 Views
Registered: ‎11-09-2015

Re: Xilinx Display port drivers for both RXSS and TXSS for PL part

Hi @vijaydhoki 

The page you are mentioning able is for the hard Dispayport TX controller, i.e. the PS controller.

Unfortunatly, there are no linux drivers available for the Displayport TX/RX subsystems. We recommend to use a baremetal application (maybe running on a Microblaze) to control the cores.

The other option for you is to port the baremetal drivers to the linux userspace but this is not supported by Xilinx.

Best Regards


Florent
Product Application Engineer - Xilinx Technical Support EMEA
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Contributor
Contributor
31 Views
Registered: ‎07-03-2019

Re: Xilinx Display port drivers for both RXSS and TXSS for PL part

Hi @florentw 

I actually went through Kernel Source, I found 2 set of DP drivers in kernel source. They are mentioned below:

1. linux/linux-xlnx/drivers/gpu/drm/xlnx/ (Config name:DRM_ZYNQMP_DPSUB)

2. linux/linux-xlnx/drivers/gpu/drm/xilinx/ (Config name:DRM_XILINX_DP)

Question 1: #1 as the name is DRM_ZYNQMP_DPSUB I can assume that it is PS DisplayPort driver?

Question 2: #1 the name looks like a PL configuration name. So is it suitable for DisplayPort driver?
By the way I got the product guide from the following link:https://www.xilinx.com/support/documentation/ip_documentation/dp_rx_subsystem/v2_1/pg233-displayport-rx-subsystem.pdf This is display port 2.1. I checked some registers of this product with dp driver at linux/linux-xlnx/drivers/gpu/drm/xilinx/ and they seem to be matching. So can you confirm which version of DP the driver supports?
At the end of the day I want to use DisplayPort 2.1 in my FPGA design. Can you suggest or point to linux drivers for this?

Regards,
Vijay

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