Re: [PATCH 1/4] net: mediatek: sgmii: fix powering up the SGMII phy
From: Paolo Abeni
Date: Tue Aug 23 2022 - 12:42:59 EST
Hello,
On Sun, 2022-08-21 at 00:45 +0200, Alexander Couzens wrote:
> There are cases when the SGMII_PHYA_PWD register contains 0x9 which
> prevents SGMII from working. The SGMII still shows link but no traffic
> can flow. Writing 0x0 to the PHYA_PWD register fix the issue. 0x0 was
> taken from a good working state of the SGMII interface.
do you have access to register documentation? what does 0x9 actually
mean? is the '0' value based on just empirical evaluation?
Thanks!
Paolo