RK3288 Hardware Design Guide
All function controllers with their own power domain could be supplied either power or no
power, in order to allocate resources on demand and reduce power consumption. No power
supplied to the module which is not in using to reduce power consumption except API02_VDD,
as shown in Fig 6-3.
Fig 6-3
Different function controllers with its own different power supply (1.8V, 2.5V or 3.3V) can
be adjusted its intensity of output driving through modifying regulator-name in dts file, as
shown in Fig 6-4. Please consult with RK engineers about any further details of this
modification.
Fig 6-4
Tips:
1. GPIO allocation should comply with IO allocated list in RK3288_IO_LIST, software can
be used immediately without modification, to improve stability of product.
2. After system starts up, RK3288 IO can be pulled up and down, which can be modified
by software, for more details, please refer to relevant datasheet released by RK.
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