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Message-Id: <20230421143648.87889-21-arinc.unal@arinc9.com>
Date: Fri, 21 Apr 2023 17:36:46 +0300
From: arinc9.unal@...il.com
To: Sean Wang <sean.wang@...iatek.com>,
Landen Chao <Landen.Chao@...iatek.com>,
DENG Qingfang <dqfext@...il.com>,
Daniel Golle <daniel@...rotopia.org>,
Andrew Lunn <andrew@...n.ch>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Russell King <linux@...linux.org.uk>
Cc: Arınç ÜNAL <arinc.unal@...nc9.com>,
Richard van Schagen <richard@...terhints.com>,
Richard van Schagen <vschagen@...com>,
Frank Wunderlich <frank-w@...lic-files.de>,
erkin.bozoglu@...ont.com, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Subject: [RFC PATCH net-next 20/22] net: dsa: mt7530: force link-down on MACs before reset on MT7530
From: Arınç ÜNAL <arinc.unal@...nc9.com>
Force link-down on all MACs before internal reset. Let's follow suit commit
728c2af6ad8c ("net: mt7531: ensure all MACs are powered down before
reset").
Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
drivers/net/dsa/mt7530.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index ac1e3c58aaac..8ece3d0d820c 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2203,6 +2203,10 @@ mt7530_setup(struct dsa_switch *ds)
return -EINVAL;
}
+ /* Force link-down on all MACs before internal reset */
+ for (i = 0; i < MT7530_NUM_PORTS; i++)
+ mt7530_write(priv, MT7530_PMCR_P(i), PMCR_FORCE_LNK);
+
/* Reset the switch through internal reset */
mt7530_write(priv, MT7530_SYS_CTRL,
SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |
--
2.37.2
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