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Message-Id: <20190729190838.832230335@linuxfoundation.org>
Date: Mon, 29 Jul 2019 21:21:18 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Baruch Siach <baruch@...s.co.il>,
Andrew Lunn <andrew@...n.ch>,
"David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.14 187/293] net: dsa: mv88e6xxx: wait after reset deactivation
From: Baruch Siach <baruch@...s.co.il>
[ Upstream commit 7b75e49de424ceb53d13e60f35d0a73765626fda ]
Add a 1ms delay after reset deactivation. Otherwise the chip returns
bogus ID value. This is observed with 88E6390 (Peridot) chip.
Signed-off-by: Baruch Siach <baruch@...s.co.il>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/net/dsa/mv88e6xxx/chip.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -4044,6 +4044,8 @@ static int mv88e6xxx_probe(struct mdio_d
goto out_g1_irq;
}
}
+ if (chip->reset)
+ usleep_range(1000, 2000);
err = mv88e6xxx_mdios_register(chip, np);
if (err)
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