andrey/k210-sdk-stuff
1
0
Fork 0
mirror of https://github.com/laanwj/k210-sdk-stuff.git synced 2024-11-22 01:16:20 +04:00
Code Issues Projects Releases Wiki Activity

doc: Add some information about UART1/2/3

Browse Source
This commit is contained in:
Wladimir J. van der Laan 2020-02-16 15:11:08 +00:00
parent 5d20ac05a0
commit 0445bc55ee
1 changed files with 11 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
doc/memory_map.md
View File

@ -660,11 +660,20 @@ UARTx
| 0xfc | `CTR` | Component Type Register |
This block is replicated for all 3 UART peripherals. The latter registers (0x20
and higher) are not used in the SDK, but defined in the structure. Their use is
unknown, although the names match some other UART controllers.
and higher) are not used in the SDK, but defined in the structure.
It looks like this matches the "Designware" 16550 compatible UART, which has a
driver in the Linux kernel tree (`drivers/tty/serial/8250/8250_dw.c`).
The best match to the register names and offsets appears to be the UART described in
[HUGEIC Communication Interface Peripheral User’s Guide](http://www.huge-ic.com/Communication%20Interface%20Peripheral%20User%27s%20Guide%20V0.1.pdf).
```
UART1: Designware UART version 4.0.1
UART1: Features APB 32 bits THRE SIR ADDITIONAL_FEAT SHADOW UART_ADD_ENCODED_PARAMS DMA_EXTRA UART 16 bytes
UART1: CTR 44570110
```
UARTHS
------