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Editor to share with you how to configure the RK3399 android7.1 DTS voltage domain, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

RK3399's CPU adopts big.LITTLE large and small core architecture, double Cortex-A72 large core + four Cortex-A53 small core structure, greatly optimizes integer, floating point, memory, etc., and revolutionizes the overall performance, power consumption and core area. RK3399's GPU uses a new generation of quad-core ARM high-end image processor Mali-T860, integrates more bandwidth compression technologies such as intelligent superposition, ASTC, local pixel storage, etc., and supports more graphics and computing interfaces, with an overall performance improvement of 45% over the previous generation.

The RK3399 Android motherboard newly developed by Ying Pengfei Technology is equipped with the latest android7.1 system, 4G DDR3 memory, 32G EMMC memory and so on. RK3399 development board size: 146*102mm, designed with very rich interfaces, on-board 5-channel UART, support USB3.0 high-performance device interface, WIFI/BT two-in-one, HDMI OUT, HDMI INT, Type C, 4G, IR, Ethernet, etc. The expandable module includes 4G module, Camera (13 million, 5 million) and other application function modules.

RK3399 Android motherboard is designed for the application development of consumer electronics, intelligent terminals, MID, wireless communications, medical equipment, industrial control and other industries, with strong video processing capabilities, ultra-high definition video output advantages, rich interfaces and stable performance. Support Android\ Linux\ Ubuntu system, perfect software support, open source code suitable for the secondary development of commercial display advertising machines with high-definition display, self-service vending machines, educational terminals, etc., can reduce the threshold of research and development, shorten the product development cycle.

Voltage domain configuration

Due to different SDK or prototype, there will be different power schemes, so the voltage domain configuration of CPU is generally in board-level DTSI or DTS, and each CPU node needs to be configured, that is, each CPU node adds CPU-supply attribute. Take RK3399 as an example, the configuration in arch/arm64/boot/dts/rockchip/Rk3399-evb-rev3.dtsi is as follows:

The configuration in arch/arm64/boot/dts/rockchip/Rk3399-evb.dtsi is as follows

These are all the contents of the article "how to configure the RK3399 android7.1 DTS Voltage Domain". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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