PL Power Domain Control

Kria K26 SOM Data Sheet (DS987)

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1.2 English

The K26 provides a mechanism to dynamically power up or down the PL power domain through the on-board PMICs. To change the state of the PL power domain, use an I2C register write to the PL power control register in the PL power domain monitor IC. The PL power state register and value for toggling the on/off state is defined in the following table.

Table 1. PL Power State Register
PL Power State Register Value
Off 0x08 0x00
On 0x08 0x3E

A reference implementation is available in the som-pwrctl function of the Xilinx xmutil tool suite available on GitHub under som-pwerctl.