1 0. Directory structure 2 3 For ease of source browsing this directory may contain soft links to variant 4 directories located elsewhere; 5 build scripts fully support such layout, however this is not necessary in order 6 to build such variants. 7 8 1. HW Customization 9 10 1.1 General description 11 - wakeup-gpio has direction from Application Processor (AP) to ContextHub 12 - irq1 has direction from ContextHub to AP (wakeup interrupt) 13 - irq2 has direction from ContextHub to AP (non-wakeup interrupt) (optional) 14 15 1.2 Kernel side 16 - wakeup-gpio = SH_INT_WAKEUP 17 - irq1-gpio = AP_INT_WAKEUP 18 - irq2-gpio = AP_INT_NONWAKEUP 19 20 1.3 ContextHub side 21 - #define SH_INT_WAKEUP PX(N0) 22 - #define AP_INT_WAKEUP PY(N1) 23 - #define AP_INT_NONWAKEUP PZ(N2) 24
