Hard Processor System Technical Reference Manual: Agilex™ 5 SoCs
A newer version of this document is available. Customers should click here to go to the newest version.
Visible to Intel only — GUID: pmh1677546544751
Ixiasoft
Visible to Intel only — GUID: pmh1677546544751
Ixiasoft
A.2.2. HPS Use of SDM QSPI Controller Use Cases
On power up, the SDM owns the QSPI controller. In order for the HPS to use the QSPI controller, the HPS must request ownership from the SDM.
The following details the typical flow for the HPS to use the QSPI controller:
- The bootloader passes the value of the QSPI controller reference clock to the end application or operating system.
- The end application uses the QSPI controller.
For the Linux use case, the U-Boot passes the value of the QSPI reference clock into the Linux device tree.