Rockpi4/dev/use-uart-with-kernel-5.10 - Revision history

Hipboi: Redirected page to Rockpi4/dev/use-uart2-as-application-uart

2022-06-07T08:40:11Z

Redirected page to Rockpi4/dev/use-uart2-as-application-uart

Ken at 09:09, 16 May 2022

2022-05-16T09:09:56Z

Ken at 09:05, 16 May 2022

2022-05-16T09:05:30Z

Ken: Created page with "{{rockpi4_header}} {{Languages|rockpiS/dev/}} ROCK Pi 4 > Development > Rockpi4/dev/use-uart-with-kernel-5.10 | Use Uart with Kernel 5...."

2022-05-16T08:46:57Z

Created page with "{{rockpi4_header}} {{Languages|rockpiS/dev/}} ROCK Pi 4 > Development > Rockpi4/dev/use-uart-with-kernel-5.10 | Use Uart with Kernel 5...."

New page

{{rockpi4_header}}

{{Languages|rockpiS/dev/}}

[[rockpi4 | ROCK Pi 4]] > [[rockpi4/dev | Development]] > [[Rockpi4/dev/use-uart-with-kernel-5.10 | Use Uart with Kernel 5.10]]

===Description===

ADB is enabled in ROCK Pi 4 all Android version and official Linux distributions. To access ADB, you need a USB male A to A cable(Upper USB3 port) and turn the USB OTG switch to Device mode.

You'd better follow the installation steps.

@@ Line 1: / Line 1: @@
-{{rockpi4_header}}
+#redirect [[Rockpi4/dev/use-uart2-as-application-uart]]
-−
-{{Languages|rockpiS/dev/}}
-−
-    [[rockpi4 | ROCK Pi 4]] > [[rockpi4/dev | Development]] > [[Rockpi4/dev/use-uart-with-kernel-5.10 | Use Uart with Kernel 5.10]]
-−
-===Description===
-−
-If you want to use uart with Kernel 5.10 in ROCK Pi 4. You'd better follow these steps.
-−
-==== Install essential package ====
-−
-  sudo apt-get install -y rockpi4-dtbo
-−
-==== UART ====
-−
-Modify file /boot/hw_intfc.conf. Set "on" to enable the optional hardware interfaces while set "off" to disable.
-−
-  intfc:uart2=on
-  intfc:uart4=on
-−
-And add "#" to line "intfc:dtoverlay=console-on-ttyS2"
-−
-  #intfc:dtoverlay=console-on-ttyS2
-  #intfc:dtoverlay=console-on-ttyS4
-−
-but now, the uart2 can still be used as a debug port with system log. If you don't want to output kernel messages, you can disable it as follow.
-−
-Modify file /boot/extlinux/extlinux.conf.
-  append earlyprintk console=ttyFIQ0,1500000n8 rw init=/sbin/init rootfstype=ext4 rootwait  root=UUID=8650cdca-49b0-4431-9667-5c639f6bab89 console=ttyS2,1500000n8
-Delete strings '''console=ttyFIQ0,1500000n8''' and '''console=ttyS2,1500000n8''' in this line.
-  append earlyprintk rw init=/sbin/init rootfstype=ext4 rootwait  root=UUID=8650cdca-49b0-4431-9667-5c639f6bab89

← Older revision		Revision as of 09:09, 16 May 2022
Line 28:		Line 28:

	Modify file /boot/extlinux/extlinux.conf.		Modify file /boot/extlinux/extlinux.conf.
		+	append earlyprintk console=ttyFIQ0,1500000n8 rw init=/sbin/init rootfstype=ext4 rootwait root=UUID=8650cdca-49b0-4431-9667-5c639f6bab89 console=ttyS2,1500000n8
		+	Delete strings '''console=ttyFIQ0,1500000n8''' and '''console=ttyS2,1500000n8''' in this line.
	append earlyprintk rw init=/sbin/init rootfstype=ext4 rootwait root=UUID=8650cdca-49b0-4431-9667-5c639f6bab89		append earlyprintk rw init=/sbin/init rootfstype=ext4 rootwait root=UUID=8650cdca-49b0-4431-9667-5c639f6bab89