netdev - RE: [PATCH] net: stmmac: Read user ID muliple times if needed.

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Date:   Wed, 2 Oct 2019 08:08:40 +0000
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Hans Andersson <Hans.Andersson@...LAVISION.SE>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        "mcoquelin.stm32@...il.com" <mcoquelin.stm32@...il.com>
CC:     "peppe.cavallaro@...com" <peppe.cavallaro@...com>,
        "alexandre.torgue@...com" <alexandre.torgue@...com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-stm32@...md-mailman.stormreply.com" 
        <linux-stm32@...md-mailman.stormreply.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] net: stmmac: Read user ID muliple times if needed.

From: Hans Andersson <Hans.Andersson@...LAVISION.SE>
Date: Oct/02/2019, 09:02:02 (UTC+00:00)

> 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.

Then I think you should fix the reset driver to only return when the 
reset is fully done.

---
Thanks,
Jose Miguel Abreu