On 6/27/2025 6:02 AM, Randy Dunlap wrote:
Hi--
On 6/26/25 7:31 AM, Luo Jie wrote:
+Below is a simplified hardware diagram of IPQ9574 SoC which includes the PPE
engine and
+other blocks which are in the SoC but outside the PPE engine. These blocks
work together
+to enable the Ethernet for the IPQ SoC::
+
[snip]
+ | | +-------------------------+ +---------+ +---------+
| |
+ | |125/312.5M clk| (PCS0) | | (PCS1) | | (PCS2) | pcs ops
| |
+ | +--------------+ UNIPHY0 | | UNIPHY1 | | UNIPHY2
|<--------+ |
+ +--------------->| | | | | |
|
+ | 31.25M ref clk +-------------------------+ +---------+ +---------+
|
+ | | | | | | |
|
+ | +-----------------------------------------------------+
|
+ |25/50M ref clk| +-------------------------+ +------+ +------+ | link
|
+ +------------->| | QUAD PHY | | PHY4 | | PHY5 |
|---------+
+ | +-------------------------+ +------+ +------+ | change
+ | |
+ | MDIO bus |
+ +-----------------------------------------------------+
Does the 'M' on the clk signals on the left side mean megahertz (MHz)?
I guess that it does, but it was a little confusing when I first saw it.
Yes, it means megahertz (MHz). I will update 'M' to 'MHz' in next update.
Thanks.
