10. Directory structure
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3For ease of source browsing this directory may contain soft links to variant
4directories located elsewhere;
5build scripts fully support such layout, however this is not necessary in order
6to build such variants.
7
81. HW Customization
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101.1 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)
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151.2 Kernel side
16- wakeup-gpio = SH_INT_WAKEUP
17- irq1-gpio   = AP_INT_WAKEUP
18- irq2-gpio   = AP_INT_NONWAKEUP
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201.3 ContextHub side
21- #define SH_INT_WAKEUP    PX(N0)
22- #define AP_INT_WAKEUP    PY(N1)
23- #define AP_INT_NONWAKEUP PZ(N2)
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