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Update page 'M_CAN Driver Usage Device Tree'

Mario Hüttel 2017-04-26 14:22:49 +02:00
parent 702cb5f884
commit 5546727129
1 changed files with 3 additions and 2 deletions
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M_CAN Driver Usage Device Tree.md

@ -48,9 +48,10 @@ It is necessary to configure interrupt line 0 of the M_CAN according to your SoC
-----
### Clocks
The M_CAN needs two clocks. The first clock *hclk* is used for the internal bus interface. Thesecond clock *cclk* is used for the CAN communication. It should be one of the following values:
The M_CAN needs two clocks. The first clock *hclk* is used for the internal bus interface. The second clock *cclk* is used for the CAN communication. Its value should be one of three clock speeds. These speeds are optimezed to generate common CAN bit rates including CAN FD.
```
cclk = {20 MHz, 40 MHz, 80 MHz}
```
It is important, due to internal clock crossings, that *hclk* is always higher than or equal to *cclk*.