QNX Technical Articles
QNX® Software Development Platform 7.1— Screen Board Support Jacinto7: Release Notes
Date of this edition: May 4, 2021
The Screen Board Support Jacinto7 package contains display and GPU libraries and drivers that support Jacinto7 target boards. You must install this Screen Board Support Jacinto7 package on top of QNX SDP 7.1.
The Screen Board Support Jacinto7 package supports the QNX SDP 7.1 BSP for Texas Instruments Jacinto 7 J721E (DRA829/TDA4xM) Evaluation Module board support package (BSP).
Throughout this document, you may see reference numbers associated with particular issues, changes, etc. When corresponding with our Technical Support staff about a given issue, please quote the relevant reference number. You might also find the reference numbers useful for tracking issues as they become fixed.
To access the most up-to-date version of these release notes, go to the QNX Software Center, right-click on the Screen Board Support Jacinto7 package, choose Properties, and use the link provided.
Contents
What's in this package?
To see the exact contents of the package, right-click it in the QNX Software Center, choose Properties, and then click Package Contents in the Properties window.
Revision History
The following is a summary of the updates made to this Screen Board Support package:- Build (7.1 BuildID 325)
-
Note that BuildID 325 of Screen Board Support Jacinto7 package has been validated only with QNX SDP 7.1 Screen (7.1 BuildID 201).
Initial SDP 7.1 release
Board support
We've validated this update on the following platform:
| Board Supplier | Board Name | CPU | GPU | GPU Stack | Display Controller | Display Interface | Number of Displays | Display Resolution | Monitor Name | Touch | Video Capture Interface | Video Decoder |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Texas Instruments | Jacinto7 | ARM Dual Cortex A72 | PowerVR Rogue GE8430 | Imgtec RGX DDK-1.10 | DSS |
DP HDMI (via Infotainment expansion card) |
2 |
DP0: 1680x1050 @ 60fps HDMI: 1920x1080 @ 60fps |
Lilliput 10.1" FA1012 | HID (via Monitor) | N/A | N/A |
Known issues
- The GPU may reset when you are running graphics-intensive applications. (Ref# J2893321)
-
You must enable the DP_PWR circuitry when using a display port (DP) to HDMI dongle that doesn't have its own external power source
(e.g., IOGears DisplayPort to HDMI adapter). (Ref# J2893298)
On the supported Jacinto7 platform, external circuitry is available to enable power to the DP_PWR pin of the DP connector. By default, power to the DP connector is disabled. You must enable the external circuitry by setting the appropriate port of the IO expander of the Jacinto7 platform using I2C:
# isend -a0x20 -n/dev/i2c1 0x03 0xfe
-
The Jacinto7 WFD driver is set up to work with the default BSP HDMI/DP pixel clocks of 148.5MHz/119MHz. (Ref# J2892627)
To use different pixel clocks, you must:
- Modify your BSP's startup (e.g., hw_init.c) to set the pixel clock frequency to a new value.
- Update the wfdcfg library to specify the port extension WFDCFG_EXT_PIXEL_CLOCK_KHZ that reflects the new frequency value. For more information, see the Updating Wfdcfg source (adding extensions) chapter of the OpenWF Configuration Developer's Guide.
Technical support
To obtain technical support for any QNX product, visit the Support area on our website (www.qnx.com). You'll find a wide range of support options, including community forums.