[Linux-stm32] [PATCH] net: stmmac: Read user ID muliple times if needed.

[Hans Andersson]

We assert / de-assert the reset line, but the CPU is too fast and the IP is still 
in reset when we later try to read user ID / Synopsys ID. Another option would
be to add a delay after we reset.

-----Original Message-----
From: Jose Abreu <Jose.Abreu at synopsys.com> 
Sent: den 2 oktober 2019 09:52
To: Hans Andersson <Hans.Andersson at CELLAVISION.SE>; mcoquelin.stm32 at gmail.com
Cc: peppe.cavallaro at st.com; alexandre.torgue at st.com; davem at davemloft.net; netdev at vger.kernel.org; linux-stm32 at st-md-mailman.stormreply.com; linux-arm-kernel at lists.infradead.org; linux-kernel at vger.kernel.org; Hans Andersson <Hans.Andersson at CELLAVISION.SE>
Subject: RE: [PATCH] net: stmmac: Read user ID muliple times if needed.

From: Hans Andersson <haan at cellavision.se>
Date: Oct/02/2019, 08:07:21 (UTC+00:00)

> When we read user ID / Synopsys ID we might still be in reset, so read 
> muliple times if needed.

We shouldn't even try to read it if IP is in reset ... 

---
Thanks,
Jose Miguel Abreu