# Features

The display subsystem is a software component that enables high-quality
graphics and video output on devices. The subsequent sections explain
the key features of the display subsystem along with the capabilities,
advanced features, and limitations.

Tab QCS6490/QCS5430
Tab QCS9075/QCS8275

**Key features**

The display subsystem supports the following key features:

- Upstream Wayland protocol with extended support from Qualcomm
- Weston with Snapdragon display manager (SDM) backend module
- DisplayPort over USB Type-C (SST)
- DSI 1.2
- Embedded DisplayPort (eDP) 1.4 for embedded panels
- MIPI DSI D-PHY
- Unified extensible firmware interface (UEFI)

**Capabilities**

The device supports two displays simultaneously and offers various configurations for maximum concurrency. The following table summarizes the capabilities.

Table : Capabilities and configurations

| DSI 0 | <ul class="simple"><br><li><p>FHD+ (1200 × 2520) at 120 fps (8-bit)</p></li><br><li><p>Supports Video Electronics Standards Association (VESA) display stream compression (DSC) 1.2</p></li><br></ul> |
| --- | --- |
| DSI 0 to HDMI | 1920 × 1080p at 60 fps |
| DisplayPort | <ul class="simple"><br><li><p>3840 × 2160 resolution at 30 fps, 24 bpp (requires two<br>lanes at HBR3)</p></li><br><li><p>Single stream transport</p></li><br><li><p>Concurrent functionality of DisplayPort and USB 3.0</p></li><br></ul> |
| eDP | <ul class="simple"><br><li><p>A maximum resolution of 1920 × 1080p at 60 fps</p></li><br><li><p>Non-pluggable eDP panels</p></li><br><li><p>Concurrent functionality with the DisplayPort</p></li><br></ul> |
| Maximum concurrency | <ul><br><li><p>FHD+ (1200 × 2520) (8‑bit) at 60 fps with DSI primary + 4K at 30 fps DisplayPort</p><br><p>Or</p><br></li><br><li><p>1920 × 1080p at 60 fps with DSI to HDMI primary + 4K at 30 fps DisplayPort</p><br><p>Or</p><br></li><br><li><p>1920 × 1080p at 60 fps with eDP primary + 4K at 30 fps DisplayPort</p></li><br></ul> |

**Advanced features**

Note

This content is applicable to QCS6490/QCS5430.

The display subsystem is designed to enhance the visual performance and
efficiency of the device. A key feature of the display subsystem is to
provide improved picture quality with HDR10 support for internal
display. This feature is available to licensed developers with authorized access.

**Limitations**

The DSI and the embedded DisplayPort (eDP) cannot work at the same time. Only one of these interfaces can be used to power up the primary panel at a time.

**Key features**

> 
> 
> The display subsystem supports the following key features:
> 
> - Wayland and Weston with upstream protocol
> - Weston compositor with direct rendering manager (DRM) backend module
> - DisplayPort with single stream transport (SST) and multi-stream transport (MST)

**Capabilities**

> 
> 
> The device supports two displays simultaneously and offers various configurations for maximum concurrency. The following table summarizes the capabilities.
> 
> 
> 
> 
> 
> 
> | <br>**QCS9075** | **DP0** | Supports 3840 × 2160 at 60 fps 30 bpp |
> | --- | --- | --- |
> | <br>**QCS9075** | **DP1** | Supports 3840 × 2160 at 60 fps 30 bpp |
> | <br>**QCS9075** | **Maximum concurrency** | Supports 3840 × 2160 at 60 fps 30 bpp with DP0 as Primary + 3840 × 2160 at 60 fps 30 bpp with DP1 as Secondary |
> | **QCS8275** | **DP1** | Supports 3840 × 2160 at 60 fps 30 bpp<br><br><br>Note<br><br><br>Use EDP1 as the primary interface for QCS8275. |
> |  |  |  |
> |  |  |  |

Last Published: Dec 19, 2024

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