From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Andrew Lunn <andrew@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Florian Fainelli <f.fainelli@gmail.com>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Michal Kubecek <mkubecek@suse.cz>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
David Jander <david@protonic.nl>,
kernel@pengutronix.de, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, Russell King <linux@armlinux.org.uk>,
mkl@pengutronix.de, Marek Vasut <marex@denx.de>
Subject: [PATCH v1] net: phy: tja11xx: add support for master-slave configuration
Date: Wed, 15 Apr 2020 14:34:47 +0200 [thread overview]
Message-ID: <20200415123447.29769-1-o.rempel@pengutronix.de> (raw)
The TJA11xx PHYs have a vendor specific Master/Slave configuration bit,
which is not compatible with IEEE 803.2-2018 spec for 100Base-T1
devices. So, provide a custom config_ange call back to solve this
problem.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
drivers/net/phy/nxp-tja11xx.c | 39 +++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c
index 2bde9386baf1f..0042ee453cbd4 100644
--- a/drivers/net/phy/nxp-tja11xx.c
+++ b/drivers/net/phy/nxp-tja11xx.c
@@ -30,6 +30,7 @@
#define MII_ECTRL_WAKE_REQUEST BIT(0)
#define MII_CFG1 18
+#define MII_CFG1_MASTER_SLAVE BIT(15)
#define MII_CFG1_AUTO_OP BIT(14)
#define MII_CFG1_SLEEP_CONFIRM BIT(6)
#define MII_CFG1_LED_MODE_MASK GENMASK(5, 4)
@@ -177,6 +178,31 @@ static int tja11xx_soft_reset(struct phy_device *phydev)
return genphy_soft_reset(phydev);
}
+static int tja11xx_config_aneg(struct phy_device *phydev)
+{
+ u16 ctl = 0;
+ int ret;
+
+ switch (phydev->master_slave) {
+ case PORT_MODE_MASTER:
+ ctl |= MII_CFG1_MASTER_SLAVE;
+ break;
+ case PORT_MODE_SLAVE:
+ break;
+ case PORT_MODE_UNKNOWN:
+ return 0;
+ default:
+ phydev_warn(phydev, "Unsupported Master/Slave mode\n");
+ return -ENOTSUPP;
+ }
+
+ ret = phy_modify_changed(phydev, MII_CFG1, MII_CFG1_MASTER_SLAVE, ctl);
+ if (ret < 0)
+ return ret;
+
+ return __genphy_config_aneg(phydev, ret);
+}
+
static int tja11xx_config_init(struct phy_device *phydev)
{
int ret;
@@ -245,6 +271,15 @@ static int tja11xx_read_status(struct phy_device *phydev)
if (!(ret & MII_COMMSTAT_LINK_UP))
phydev->link = 0;
+
+ ret = phy_read(phydev, MII_CFG1);
+ if (ret < 0)
+ return ret;
+
+ if (ret & MII_CFG1_MASTER_SLAVE)
+ phydev->master_slave = PORT_MODE_MASTER;
+ else
+ phydev->master_slave = PORT_MODE_SLAVE;
}
return 0;
@@ -514,6 +549,7 @@ static struct phy_driver tja11xx_driver[] = {
.features = PHY_BASIC_T1_FEATURES,
.probe = tja11xx_probe,
.soft_reset = tja11xx_soft_reset,
+ .config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.suspend = genphy_suspend,
@@ -529,6 +565,7 @@ static struct phy_driver tja11xx_driver[] = {
.features = PHY_BASIC_T1_FEATURES,
.probe = tja11xx_probe,
.soft_reset = tja11xx_soft_reset,
+ .config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.suspend = genphy_suspend,
@@ -543,6 +580,7 @@ static struct phy_driver tja11xx_driver[] = {
.features = PHY_BASIC_T1_FEATURES,
.probe = tja1102_p0_probe,
.soft_reset = tja11xx_soft_reset,
+ .config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.match_phy_device = tja1102_p0_match_phy_device,
@@ -561,6 +599,7 @@ static struct phy_driver tja11xx_driver[] = {
.features = PHY_BASIC_T1_FEATURES,
/* currently no probe for Port 1 is need */
.soft_reset = tja11xx_soft_reset,
+ .config_aneg = tja11xx_config_aneg,
.config_init = tja11xx_config_init,
.read_status = tja11xx_read_status,
.match_phy_device = tja1102_p1_match_phy_device,
--
2.26.0.rc2
next reply other threads:[~2020-04-15 12:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 12:34 Oleksij Rempel [this message]
2020-04-15 12:56 ` [PATCH v1] net: phy: tja11xx: add support for master-slave configuration Oleksij Rempel
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