Messages in this thread | | | From | Krzysztof Halasa <> | Subject | Re: [PATCH V8 12/13] ptp: Added a clock driver for the IXP46x. | Date | Mon, 10 Jan 2011 21:24:15 +0100 |
| |
Richard Cochran <richardcochran@gmail.com> writes:
> But before that, I have a big favor to ask you. Can you please look at > the TODO in my patch and give me a hint? I don't know how to relate > the port instance (NPE A,B,C) to the two time stamping channels.
I assume you mean this: + * PHYSICAL_ID(p->id) ? + * TODO - Figure out correct mapping.
Unfortunately I can's find this information in the devel manual. I think there are 3 channels (not two), each for one Ethernet port. IXP465 can have a port on each NPE.
PHYSICAL_ID etc. are described at the start of the file: * logical port 0x00 0x10 0x20 * NPE 0 (NPE-A) 1 (NPE-B) 2 (NPE-C) * physical PortId 2 0 1
This means the first port (usually "eth0") is connected to NPE-B, the second port to NPE-C, and the third port to NPE-A (not available on IXP42x).
Also, the manual says NPE-B can serve 3 additional Ethernet ports (6 total).
I only have access to IXP425 (and 421) hardware. I think someone with the actual IXP465 has to check the details. -- Krzysztof Halasa
| |