On 28/08/2024 17:33, Robert Nelson wrote:
> On Fri, Aug 23, 2024 at 10:33 AM Robert Nelson <robertcnelson@xxxxxxxxx> wrote:
>>
>>>> +
>>>> +&cpsw3g {
>>>> + pinctrl-names = "default";
>>>> + pinctrl-0 = <&rgmii1_pins_default>, <&gbe_pmx_obsclk>;
>>>
>>> Why do you need OBSCLK for Ethernet MAC?
>>> The OBSCLK is connected to the Ethernet PHY via C406 which is not even populated.
>>> It seems that the PHY is clocked by a crystal oscillator X5 so doesn't really
>>> need OBSCLK in the stock configuration?
>>
>> Ah crap, I'll take a look at this... I bet it's left over from the
>> first pcb, (all my first rev pcb's are now locked up so i don't use
>> them anymore).. Seeed/BeagleBoard was playing it safe and designing
>> in both options.. Once the internal clocks were verified newer
>> revisions removed the external clock.
>>
>> Yeah, I'm pretty sure final production boards removed every external
>> clock option.
>
> Yeap, external clock is the default for all production boards, i
> removed this internal clock configuration.
Did you mean internal clock is the default?
Earlier you mentioned
"after verification newer versions removed the external clock"
--
cheers,
-roger
