Alexander Kanevskiy
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Posts posted by Alexander Kanevskiy
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The funny part that in dtb at least uart0 is enabled. but it works kind of funny way: from external to R1 data can be transferred, so RX line works, from R1 to external device, it doesn't work. TX pin seems to be working incorrectly. I checked pin mapping, PB22/PB23 seems to be ok. potentially it can conflict with IR1, but IR1 is disabled.
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Gentlemen, which ports are confirmed to be working with 4.x kernels on Lamobo R1 ?
I'm using Ubuntu image 5.10, with installed updates: Ubuntu 14.04.4 LTS 4.5.5-sunxi.
So far, seen only working UART3 (/dev/ttyS1) on pins 8/10 of CON3.
U-boot seen on UART0 (J13), but under Linux, don't see anything on either UART0 or UART2.
Anyone seen better results ?
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Default kernel and boot parameters from image Armbian_5.00_Lamobo-r1_Ubuntu_trusty_4.4.1.zip.
Tried also to modify command line to include console=ttyS0,115200n8 - no difference.
Tried to manually in u-boot to specify different dtb (sun7i-a20-bananapi-r1.dtb) via setenv, still same behaivour of serial. only visible change was green activity led blinking.
Board boots, network works, but would like to get serial working as well.
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Good day all.
Anyone having issues of not able to see anything after "Uncompressing Linux... done, booting the kernel." via serial console on Lamobo R1 ?
Tried to experiment a bit, it seems that U-Boot works correctly, but in Linux kernel, sent data from USB-serial to ttyS0 arriving correctly, but anything written to ttyS0 is not visible on connected USB-serial adapter.
Lamobo R1 serial ports.
in Allwinner sunxi
Posted
I'm sure, that there is no getty there