netdev - [PATCH v4 net-next 1/5] net: phy: Add PHY_RST_AFTER

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Date:   Mon, 18 Jan 2021 16:58:27 +0000
From:   "Badel, Laurent" <LaurentBadel@...on.com>
To:     "davem@...emloft.net" <davem@...emloft.net>,
        "m.felsch@...gutronix.de" <m.felsch@...gutronix.de>,
        "fugang.duan@....com" <fugang.duan@....com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "richard.leitner@...data.com" <richard.leitner@...data.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "f.fainelli@...il.com" <f.fainelli@...il.com>,
        "marex@...x.de" <marex@...x.de>
Subject: [PATCH v4 net-next 1/5] net: phy: Add PHY_RST_AFTER_PROBE flag

Add new flag PHY_RST_AFTER_PROBE for LAN8710/20/40. This flag is intended
for phy_probe() to assert hardware reset after probing the PHY.

Signed-off-by: Laurent Badel <laurentbadel@...on.com>
---
 drivers/net/phy/smsc.c | 4 ++--
 include/linux/phy.h    | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/smsc.c b/drivers/net/phy/smsc.c
index ddb78fb4d6dc..5ee45c48efbb 100644
--- a/drivers/net/phy/smsc.c
+++ b/drivers/net/phy/smsc.c
@@ -433,7 +433,7 @@ static struct phy_driver smsc_phy_driver[] = {
 	.name		= "SMSC LAN8710/LAN8720",
 
 	/* PHY_BASIC_FEATURES */
-
+	.flags		= PHY_RST_AFTER_PROBE,
 	.probe		= smsc_phy_probe,
 	.remove		= smsc_phy_remove,
 
@@ -460,7 +460,7 @@ static struct phy_driver smsc_phy_driver[] = {
 	.name		= "SMSC LAN8740",
 
 	/* PHY_BASIC_FEATURES */
-	.flags		= PHY_RST_AFTER_CLK_EN,
+	.flags		= PHY_RST_AFTER_CLK_EN & PHY_RST_AFTER_PROBE,
 
 	.probe		= smsc_phy_probe,
 
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 24fcc6456a9e..4bbc7a06235c 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -81,6 +81,7 @@ extern const int phy_10gbit_features_array[1];
 #define PHY_RST_AFTER_CLK_EN	0x00000002
 #define PHY_POLL_CABLE_TEST	0x00000004
 #define MDIO_DEVICE_IS_PHY	0x80000000
+#define PHY_RST_AFTER_PROBE	0x00000008
 
 /**
  * enum phy_interface_t - Interface Mode definitions
-- 
2.17.1



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