rockchip: add support for Radxa Rock Pi 4
This adds basic support for Radxa Rock Pi 4
Specification:
- RAM: 1 GB/ 2 GB/4 GB LPDDR4
- SoC: Rockchip RK3399
- CPU: 64bit hexa core processor
Dual Cortex-A72, freqency 1.8Ghz
with quad Cortex-A53, frequency 1.4Ghz
- USB: USB 3.0 OTG x1
hardware switch for host/device switch, upper one
USB 3.0 HOST x1
dedicated USB3.0 channel, lower one
USB 2.0 HOST x2
- Ethernet: 1x GbE
- Storage: eMMC module
uSD card
M.2 SSD
- Wireless: 802.11 ac wifi
Bluetooth 5.0
currently not supported
firmware Installation
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gzip -d xxx.img.gz, then dd the .img to SD/eMMC
======================
Device Tested: ROCK PI 4 Model B v1.3
Signed-off-by: Marty Jones <mj8263788@gmail.com>