Agilex™ 5 ES Device Errata and User Guidelines

ID 825514
Date 11/07/2025
Public
Document Table of Contents

2.1.4. Incorrect SD/eMMC controller preset SRS16.BCSDCLK register value

Description

Incorrect register value indicates the SD/eMMC controller supports a maximum SD card clock of 50 MHz instead of 200 MHz. You will observe clock switch failures in Linux and other software drivers.

Workaround

Patch the code to bypass the usage of the SRS16.BCSDCLK register and instead assume maximum SD clock to be 200 MHz