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 <devnull+arinc.unal.arinc9.com@kernel.org>
Date: Tue, 06 Feb 2024 01:08:03 +0300
Subject: [PATCH net-next v5 2/7] net: dsa: mt7530: move XTAL check to
 mt7530_setup()
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In-Reply-To:
 <20240206-for-netnext-mt7530-improvements-2-v5-0-d7d92a185cb1@arinc9.com>
To: Daniel Golle <daniel@makrotopia.org>, DENG Qingfang <dqfext@gmail.com>, 
 Sean Wang <sean.wang@mediatek.com>, Andrew Lunn <andrew@lunn.ch>, 
 Florian Fainelli <f.fainelli@gmail.com>, 
 Vladimir Oltean <olteanv@gmail.com>, 
 "David S. Miller" <davem@davemloft.net>, Eric Dumazet <edumazet@google.com>, 
 Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>, 
 Matthias Brugger <matthias.bgg@gmail.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, 
 Russell King <linux@armlinux.org.uk>
Cc: mithat.guner@xeront.com, erkin.bozoglu@xeront.com, 
 Bartel Eerdekens <bartel.eerdekens@constell8.be>, netdev@vger.kernel.org, 
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
 linux-mediatek@lists.infradead.org, 
 =?utf-8?q?Ar=C4=B1n=C3=A7_=C3=9CNAL?= <arinc.unal@arinc9.com>, 
 "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Reply-To: <arinc.unal@arinc9.com>

From: Arınç ÜNAL <arinc.unal@arinc9.com>

The crystal frequency concerns the switch core. The frequency should be
checked when the switch is being set up so the driver can reject the
unsupported hardware earlier and without requiring port 6 to be used.

Move it to mt7530_setup(). Drop the unnecessary function printing.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
---
 drivers/net/dsa/mt7530.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index 330e22abc076..8b8469eba863 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -422,13 +422,6 @@ mt7530_pad_clk_setup(struct dsa_switch *ds, phy_interface_t interface)
 
 	xtal = mt7530_read(priv, MT7530_MHWTRAP) & HWTRAP_XTAL_MASK;
 
-	if (xtal == HWTRAP_XTAL_20MHZ) {
-		dev_err(priv->dev,
-			"%s: MT7530 with a 20MHz XTAL is not supported!\n",
-			__func__);
-		return -EINVAL;
-	}
-
 	switch (interface) {
 	case PHY_INTERFACE_MODE_RGMII:
 		trgint = 0;
@@ -2259,6 +2252,12 @@ mt7530_setup(struct dsa_switch *ds)
 		return -ENODEV;
 	}
 
+	if ((val & HWTRAP_XTAL_MASK) == HWTRAP_XTAL_20MHZ) {
+		dev_err(priv->dev,
+			"MT7530 with a 20MHz XTAL is not supported!\n");
+		return -EINVAL;
+	}
+
 	/* Reset the switch through internal reset */
 	mt7530_write(priv, MT7530_SYS_CTRL,
 		     SYS_CTRL_PHY_RST | SYS_CTRL_SW_RST |

-- 
2.40.1