[U-Boot] [RFC PATCH 0/1] net: phy: Force master mode for RTL8211C
This patch is an RFC based on recent discussions. It's only lightly tested. I have yet to verify that the registers are being set correctly. I'm sending it out now because I have to leave for today.
Michael
Michael Haas (1): net: phy: Force master mode for RTL8211C
drivers/net/phy/realtek.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
The RTL8211C found on the A20-OlinuXino-Lime2 does not word in slave mode. This patch disables master/slave mode autonegotiation and forces master mode.
The RTL8211C identifies itself as RTL8211B via its UID. This patch uses the revision number taken from the PHYID2 register to distinguish the two. The NetBSD driver uses the same approach.
CC: fradav@gmail.com CC: merker@debian.org CC: hdegoede@redhat.com CC: ijc@hellion.org.uk CC: joe.hershberger@ni.com Signed-off-by: Michael Haas haas@computerlinguist.org ---
drivers/net/phy/realtek.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 259a87f..cdb3376 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -5,6 +5,7 @@ * * Copyright 2010-2011, 2015 Freescale Semiconductor, Inc. * author Andy Fleming + * Copyright 2016 Karsten Merker merker@debian.org */ #include <config.h> #include <common.h> @@ -54,6 +55,19 @@ static int rtl8211x_config(struct phy_device *phydev) phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER, MIIM_RTL8211x_PHY_INTR_DIS);
+ int reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_PHYSID1); + int rev = reg & 0xf; + if (rev == 3 & 6 phydev->phy_id == 0x1cc912) { + /* RTL8211C and RTL8211C are distinguished only by + their revision number */ + reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000); + /* force manual master/slave configuration */ + reg |= (1 << 12); + /* force master mode */ + reg | = (1 << 11); + phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, reg); + } + /* read interrupt status just to clear it */ phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER);
@@ -223,7 +237,7 @@ static int rtl8211f_startup(struct phy_device *phydev) /* Support for RTL8211B PHY */ static struct phy_driver RTL8211B_driver = { .name = "RealTek RTL8211B", - .uid = 0x1cc910, + .uid = 0x1cc912, .mask = 0xffffff, .features = PHY_GBIT_FEATURES, .config = &rtl8211x_config,
On 03/22/2016 08:19 AM, Michael Haas wrote:
The RTL8211C found on the A20-OlinuXino-Lime2 does not word in slave mode. This patch disables master/slave mode autonegotiation and forces master mode.
The RTL8211C identifies itself as RTL8211B via its UID. This patch uses the revision number taken from the PHYID2 register to distinguish the two. The NetBSD driver uses the same approach.
CC: fradav@gmail.com CC: merker@debian.org CC: hdegoede@redhat.com CC: ijc@hellion.org.uk CC: joe.hershberger@ni.com Signed-off-by: Michael Haas haas@computerlinguist.org
drivers/net/phy/realtek.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 259a87f..cdb3376 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -5,6 +5,7 @@
- Copyright 2010-2011, 2015 Freescale Semiconductor, Inc.
- author Andy Fleming
*/
- Copyright 2016 Karsten Merker merker@debian.org
#include <config.h> #include <common.h> @@ -54,6 +55,19 @@ static int rtl8211x_config(struct phy_device *phydev) phy_write(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER, MIIM_RTL8211x_PHY_INTR_DIS);
- int reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_PHYSID1);
- int rev = reg & 0xf;
- if (rev == 3 & 6 phydev->phy_id == 0x1cc912) {
/* RTL8211C and RTL8211C are distinguished only bytheir revision number */reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000);/* force manual master/slave configuration */reg |= (1 << 12);/* force master mode */reg | = (1 << 11);phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, reg);- }
- /* read interrupt status just to clear it */ phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211x_PHY_INER);
@@ -223,7 +237,7 @@ static int rtl8211f_startup(struct phy_device *phydev) /* Support for RTL8211B PHY */ static struct phy_driver RTL8211B_driver = { .name = "RealTek RTL8211B",
- .uid = 0x1cc910,
- .uid = 0x1cc912, .mask = 0xffffff, .features = PHY_GBIT_FEATURES, .config = &rtl8211x_config,
I have accidentally included Karsten Merkers '[PATCH] net: phy: Realtek RTL8211B/C PHY ID fix' due to a botched call to git am earlier. I'll be re-sending a clean version, but note that Karsten's patch is required.
Michael
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Michael Haas