I've noted
this one and re-read the thread from post #1. I think I might compile some experiment
FYi the device tree is like this$this->bbcode_second_pass_code('', '$ ls /proc/device-tree
'#address-cells' opp_table0
'#size-cells' oscillator
__local_fixups__ pinctrl
__symbols__ power-management@ff730000
aliases pwm@ff680000
amba pwm@ff680010
arm-pmu pwm@ff680020
bus_intmem@ff700000 pwm@ff680030
chosen qos@ffaa0000
cif@ff950000 qos@ffaa0080
cif_isp@ff910000 qos@ffad0000
clock-controller@ff760000 qos@ffad0100
compatible qos@ffad0180
copyright qos@ffad0400
cpus qos@ffad0480
display-subsystem qos@ffad0500
dmc@ff610000 qos@ffad0800
dp@ff970000 qos@ffad0880
dsi@ff960000 qos@ffad0900
dsi@ff964000 qos@ffae0000
dwmmc@ff0c0000 qos@ffaf0000
dwmmc@ff0d0000 qos@ffaf0080
dwmmc@ff0e0000 reserved-memory
dwmmc@ff0f0000 rga@ff920000
efuse@ffb40000 rk3288-gpiomem
ethernet@ff290000 rockchip-suspend
external-gmac-clock saradc@ff100000
fixedregulator_3v3 sdio-pwrseq
flash-regulator sdmmc-regulator
gpio-keys serial@ff180000
gpio-leds serial@ff190000
gpu@ffa30000 serial@ff1b0000
hdmi@ff980000 serial@ff1c0000
hevc-service@ff9c0000 serial@ff690000
i2c@ff140000 sound-ext-card
i2c@ff150000 sound-simple-card
i2c@ff160000 sound@ff8b0000
i2c@ff170000 spi@ff110000
i2c@ff650000 spi@ff120000
i2c@ff660000 spi@ff130000
i2s@ff890000 sram@ff720000
iep@ff90000 syscon@ff740000
interrupt-controller@ffc01000 syscon@ff770000
interrupt-parent syscon@ffac0000
io-domains system-id
iommu@ff900800 testcase-data
iommu@ff914000 thermal-zones
iommu@ff930300 timer
iommu@ff940300 timer@ff6b0000
iommu@ff9a0800 tsadc@ff280000
iommu@ff9c0440 usb@ff500000
ion usb@ff520000
isp@ff910000 usb@ff540000
lvds@ff96c000 usb@ff580000
memory usb@ff5c0000
model vdd_log
name video-codec@ff9a0000
nocp-core@ffac0400 vop@ff930000
nocp-gpu@ffac0800 vop@ff940000
nocp-peri@ffac0c00 vpu-service@ff9a0000
nocp-vio0@ffac1400 vsys-regulator
nocp-vio1@ffac1800 watchdog@ff800000
nocp-vio2@ffac1c00 wireless-bluetooth
nocp-vpu@ffac1000 wireless-wlan
opp-table1')
There's one extra USB, that might be the BT device.