linux-kernel - [PATCH net 5/7] net: dsa: mt7530: set up port 5 before CPU ports are enabled

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Message-Id: <20230326140818.246575-6-arinc.unal@arinc9.com>
Date:   Sun, 26 Mar 2023 17:08:16 +0300
From:   arinc9.unal@...il.com
To:     Sean Wang <sean.wang@...iatek.com>,
        Landen Chao <Landen.Chao@...iatek.com>,
        DENG Qingfang <dqfext@...il.com>, 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>,
        René van Dorst <opensource@...rst.com>
Cc:     Arınç ÜNAL <arinc.unal@...nc9.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Landen Chao <landen.chao@...iatek.com>,
        Ilya Lipnitskiy <ilya.lipnitskiy@...il.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: [PATCH net 5/7] net: dsa: mt7530: set up port 5 before CPU ports are enabled

From: Arınç ÜNAL <arinc.unal@...nc9.com>

Set priv->p5_intf_sel before the CPU ports are enabled.

This makes sure the 'if (priv->p5_intf_sel != P5_DISABLED)' check on
mt753x_phylink_mac_config() runs with priv->p5_intf_sel initialised.

Set up port 5 for phy muxing right after priv->p5_interface is set to
PHY_INTERFACE_MODE_NA.

Fixes: 38f790a80560 ("net: dsa: mt7530: Add support for port 5")
Tested-by: Arınç ÜNAL <arinc.unal@...nc9.com>
Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
---
 drivers/net/dsa/mt7530.c | 76 ++++++++++++++++++++--------------------
 1 file changed, 38 insertions(+), 38 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 3deebdcfeedf..2397d63cec29 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -2209,44 +2209,6 @@ mt7530_setup(struct dsa_switch *ds)
 	priv->p5_interface = PHY_INTERFACE_MODE_NA;
 	priv->p6_interface = PHY_INTERFACE_MODE_NA;
 
-	/* Enable port 6 */
-	val = mt7530_read(priv, MT7530_MHWTRAP);
-	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
-	val |= MHWTRAP_MANUAL;
-	mt7530_write(priv, MT7530_MHWTRAP, val);
-
-	/* Enable and reset MIB counters */
-	mt7530_mib_reset(ds);
-
-	for (i = 0; i < MT7530_NUM_PORTS; i++) {
-		/* Disable forwarding by default on all ports */
-		mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
-			   PCR_MATRIX_CLR);
-
-		/* Disable learning by default on all ports */
-		mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
-
-		if (dsa_is_cpu_port(ds, i)) {
-			ret = mt753x_cpu_port_enable(ds, i);
-			if (ret)
-				return ret;
-		} else {
-			mt7530_port_disable(ds, i);
-
-			/* Set default PVID to 0 on all user ports */
-			mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
-				   G0_PORT_VID_DEF);
-		}
-		/* Enable consistent egress tag */
-		mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
-			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
-	}
-
-	/* Setup VLAN ID 0 for VLAN-unaware bridges */
-	ret = mt7530_setup_vlan0(priv);
-	if (ret)
-		return ret;
-
 	/* Setup port 5 */
 	if (!dsa_is_unused_port(ds, 5)) {
 		/* Set the interface selection of port 5 to GMAC5 when it's used
@@ -2294,6 +2256,44 @@ mt7530_setup(struct dsa_switch *ds)
 			mt7530_setup_port5(ds, interface);
 	}
 
+	/* Enable port 6 */
+	val = mt7530_read(priv, MT7530_MHWTRAP);
+	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
+	val |= MHWTRAP_MANUAL;
+	mt7530_write(priv, MT7530_MHWTRAP, val);
+
+	/* Enable and reset MIB counters */
+	mt7530_mib_reset(ds);
+
+	for (i = 0; i < MT7530_NUM_PORTS; i++) {
+		/* Disable forwarding by default on all ports */
+		mt7530_rmw(priv, MT7530_PCR_P(i), PCR_MATRIX_MASK,
+			   PCR_MATRIX_CLR);
+
+		/* Disable learning by default on all ports */
+		mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
+
+		if (dsa_is_cpu_port(ds, i)) {
+			ret = mt753x_cpu_port_enable(ds, i);
+			if (ret)
+				return ret;
+		} else {
+			mt7530_port_disable(ds, i);
+
+			/* Set default PVID to 0 on all user ports */
+			mt7530_rmw(priv, MT7530_PPBV1_P(i), G0_PORT_VID_MASK,
+				   G0_PORT_VID_DEF);
+		}
+		/* Enable consistent egress tag */
+		mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
+			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
+	}
+
+	/* Setup VLAN ID 0 for VLAN-unaware bridges */
+	ret = mt7530_setup_vlan0(priv);
+	if (ret)
+		return ret;
+
 #ifdef CONFIG_GPIOLIB
 	if (of_property_read_bool(priv->dev->of_node, "gpio-controller")) {
 		ret = mt7530_setup_gpio(priv);
-- 
2.37.2