diff options
| author | Nicolas Ferre <nicolas.ferre@microchip.com> | 2019-10-23 10:46:44 +0000 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2019-12-09 09:47:42 -0600 |
| commit | b2f2643b393e6aff522dd7f608411a695ea9d67f (patch) | |
| tree | ee365aa039512c14cfe876c80492d00954c53dbd | |
| parent | 19820db0bd97fd4e202019594abe9a9604aa5534 (diff) | |
net: phy: micrel: make sure the factory test bit is cleared
The KSZ8081 PHY has a factory test mode which is set at the de-assertion
of the reset line based on the RXER (KSZ8081RNA/RND) or TXC
(KSZ8081MNX/RNB) pin. If a pull-down is missing, or if the pin has a
pull-up, the factory test mode should be cleared by manually writing a 0
(according to the datasheet).
Create another ksz8081_config function to handle this case.
Suggested-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
| -rw-r--r-- | drivers/net/phy/micrel_ksz8xxx.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/net/phy/micrel_ksz8xxx.c b/drivers/net/phy/micrel_ksz8xxx.c index daa57ce33c..e27fc45a28 100644 --- a/drivers/net/phy/micrel_ksz8xxx.c +++ b/drivers/net/phy/micrel_ksz8xxx.c @@ -24,6 +24,7 @@ static struct phy_driver KSZ804_driver = { }; #define MII_KSZPHY_OMSO 0x16 +#define KSZPHY_OMSO_FACTORY_TEST BIT(15) #define KSZPHY_OMSO_B_CAST_OFF (1 << 9) static int ksz_genconfig_bcastoff(struct phy_device *phydev) @@ -80,12 +81,30 @@ static struct phy_driver KSZ8051_driver = { .shutdown = &genphy_shutdown, }; +static int ksz8081_config(struct phy_device *phydev) +{ + int ret; + + ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO); + if (ret < 0) + return ret; + + ret &= ~KSZPHY_OMSO_FACTORY_TEST; + + ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_KSZPHY_OMSO, + ret | KSZPHY_OMSO_B_CAST_OFF); + if (ret < 0) + return ret; + + return genphy_config(phydev); +} + static struct phy_driver KSZ8081_driver = { .name = "Micrel KSZ8081", .uid = 0x221560, .mask = 0xfffff0, .features = PHY_BASIC_FEATURES, - .config = &ksz_genconfig_bcastoff, + .config = &ksz8081_config, .startup = &genphy_startup, .shutdown = &genphy_shutdown, }; |