HelenOS sources

XHCI_PSI_PSIE     308 uspace/drv/bus/usb/xhci/debug.c 	    speed_exp[XHCI_REG_RD(psi, XHCI_PSI_PSIE)],
XHCI_PSI_PSIE     136 uspace/drv/bus/usb/xhci/hc.c 					unsigned psie = XHCI_REG_RD(psi, XHCI_PSI_PSIE);
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