AR# 75330

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LogiCORE HDMI RX 1.4/2.0 Subsystem IP v3.1(Rev 3), Software Driver v5.4 - How to enable HDCP 1.4 only or HDCP 2.2 only mode?

描述

I want to use HDMI RX to behave as a HDCP 1.4 or HDCP 2.2 only sink, but I cannot enable HDCP 1.4 or HDCP 2.2 only mode.

The valid options are either XV_HDMIRXSS_HDCP_NONE (disable HDCP) or XV_HDMIRXSS_HDCP_BOTH (Both HDCP 1.4 and 2.2 are enabled).

How can I fix this problem?

解决方案

The current HDMI RX driver v5.4 does not support HDCP 1.4 or HDCP 2.2 only mode.

Below are the authentication modes which can be set by the application with the XV_HdmiRxSs_SetUserHdcpProtocol API:

  1. XV_HDMIRXSS_HDCP_14 (for HDCP 1.4 only)
  2. XV_HDMIRXSS_HDCP_22 (for HDCP 2.2 only)
  3. XV_HDMIRXSS_HDCP_NONE (to disable all authentication)
  4. XV_HDMIRXSS_HDCP_NOUSERPREF (to reset user preference previously set)

Below is the behavior of different sources with different HDCP capabilities.

配置

Behavior

Source

HDCP 1.4 Only

Sends HDCP 1.4 encrypted Stream

Nvidia Shield (2.2 and 1.4 both)

HDCP 2.2 Only

Sends HDCP 2.2 encrypted Stream

Nvidia Shield (2.2 and 1.4 both)

HDCP None

Un encrypted Stream

Nvidia Shield (2.2 and 1.4 both)

XV_HDMIRXSS_HDCP_NOUSERPREF

Sends HDCP 2.2 encrypted Stream

Nvidia Shield (2.2 and 1.4 both)

XV_HDMIRXSS_HDCP_NOUSERPREF

Sends HDCP 1.4 encrypted stream

Amazon Fire stick (1.4 only)

  

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
54546 HDMI 1.4/2.0 Receiver (RX) Subsystem - Release Notes and Known Issues for the Vivado 2015.1 tool and later versions N/A N/A

相关答复记录

AR# 75330
日期 06/27/2020
状态 活跃
Type 一般类
IP
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