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[PATCH] PPC 4xx EMAC driver: fix VSC8201 PHY initialization 

* MII registers must override strap pins
* disable "echo" mode to make 10/HDX work (Franz Sirl)

Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
wifi-calibration
Eugene Surovegin 2005-10-29 12:47:41 -07:00 committed by Jeff Garzik
parent 1b195916dd
commit 86e7fe705d
1 changed files with 12 additions and 0 deletions
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12
drivers/net/ibm_emac/ibm_emac_phy.c
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@ -236,12 +236,16 @@ static struct mii_phy_def genmii_phy_def = {
};
/* CIS8201 */
#define MII_CIS8201_10BTCSR 0x16
#define TENBTCSR_ECHO_DISABLE 0x2000
#define MII_CIS8201_EPCR 0x17
#define EPCR_MODE_MASK 0x3000
#define EPCR_GMII_MODE 0x0000
#define EPCR_RGMII_MODE 0x1000
#define EPCR_TBI_MODE 0x2000
#define EPCR_RTBI_MODE 0x3000
#define MII_CIS8201_ACSR 0x1c
#define ACSR_PIN_PRIO_SELECT 0x0004
static int cis8201_init(struct mii_phy *phy)
{
@ -269,6 +273,14 @@ static int cis8201_init(struct mii_phy *phy)
}
phy_write(phy, MII_CIS8201_EPCR, epcr);
/* MII regs override strap pins */
phy_write(phy, MII_CIS8201_ACSR,
phy_read(phy, MII_CIS8201_ACSR) | ACSR_PIN_PRIO_SELECT);
/* Disable TX_EN -> CRS echo mode, otherwise 10/HDX doesn't work */
phy_write(phy, MII_CIS8201_10BTCSR,
phy_read(phy, MII_CIS8201_10BTCSR) | TENBTCSR_ECHO_DISABLE);
return 0;
}