[PATCH linux] mach-aspeed: Add Zaius BMC PHY reset

Joel Stanley joel at jms.id.au
Tue Oct 25 15:18:33 AEDT 2016


Hi Xo,

On Fri, Oct 21, 2016 at 3:27 PM, Joel Stanley <joel at jms.id.au> wrote:
> On Fri, Oct 21, 2016 at 9:26 AM, Xo Wang <xow at google.com> wrote:
>> The Broadcom PHY for the Zaius BMC requires a hard reset after RGMII
>> clocks are enabled. This asserts the reset in case it wasn't performed
>> in U-Boot.

> I'm not sure how we would handle this properly if we were to submit it
> upstream. We can carry it for now though.

I came across this thread on lkml: https://patchwork.ozlabs.org/patch/685741/

It has some suggestions for now to do a hard reset of the IP on boot
using GPIOs, which might be an upstreamable solution for your issue.

Cheers,

Joel


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