netdev - [PATCH 4/8] net: dsa: add support for GMAC2 wired to ext

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Message-Id: <20181214164847.4851-5-frank-w@public-files.de>
Date:   Fri, 14 Dec 2018 17:48:43 +0100
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Matthias Brugger <matthias.bgg@...il.com>, netdev@...r.kernel.org,
        Sean Wang <sean.wang@...iatek.com>,
        Andrew Lunn <andrew@...n.ch>,
        linux-mediatek@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>
Subject: [PATCH 4/8] net: dsa: add support for GMAC2 wired to ext

cpu-ports of mt7530 need some special flags to be set

based on
https://github.com/openwrt/openwrt/blob/master/target/linux/mediatek/patches-4.14/0032-net-dsa-mediatek-add-support-for-GMAC2-wired-to-ext-.patch

Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
---
 drivers/net/dsa/mt7530.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index a5de9bffe5be..a6a15a063e3e 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -1277,6 +1277,11 @@ mt7530_setup(struct dsa_switch *ds)
 	val = mt7530_read(priv, MT7530_MHWTRAP);
 	val &= ~MHWTRAP_P6_DIS & ~MHWTRAP_PHY_ACCESS;
 	val |= MHWTRAP_MANUAL;
+	if (!dsa_is_cpu_port(ds, 5)) {
+		val |= MHWTRAP_P5_DIS;
+		val |= MHWTRAP_P5_MAC_SEL;
+		val |= MHWTRAP_P5_RGMII_MODE;
+	}
 	mt7530_write(priv, MT7530_MHWTRAP, val);
 
 	/* Enable and reset MIB counters */
-- 
2.17.1