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MPC5XXX, Motion-PRO: Fix PHY initialization problem. 

After being reset in mpc5xxx_fec_init_phy(), PHY goes into FX mode, in which
networking does not function. This commit switches PHY to TX mode by clearing
the FX_SEL bit of Mode Control Register. It also reverses commit
008861a2f3, i.e., a temporary workaround.

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>
Acked-by: Bartlomiej Sieka <tur@semihalf.com>
This commit is contained in:
Bartlomiej Sieka 2007-05-27 16:58:45 +02:00
parent 93b78f534a
commit c00125e07c
3 changed files with 18 additions and 6 deletions
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18
board/motionpro/motionpro.c
View File

@ -28,7 +28,7 @@
#include <common.h>
#include <mpc5xxx.h>
#include <miiphy.h>
#if defined(CONFIG_OF_FLAT_TREE)
#include <ft_build.h>
#endif
@ -82,6 +82,22 @@ int board_early_init_r(void)
}
/*
* Additional PHY intialization. After being reset in mpc5xxx_fec_init_phy(),
* PHY goes into FX mode. To take it out of the FX mode and switch into
* desired TX operation, one needs to clear the FX_SEL bit of Mode Control
* Register.
*/
void reset_phy(void)
{
unsigned short mode_control;
miiphy_read("FEC ETHERNET", CONFIG_PHY_ADDR, 0x15, &mode_control);
miiphy_write("FEC ETHERNET", CONFIG_PHY_ADDR, 0x15,
mode_control & 0xfffe);
return;
}
#ifndef CFG_RAMBOOT
/*
* Helper function to initialize SDRAM controller.

4
cpu/mpc5xxx/fec.c
View File

@ -395,9 +395,7 @@ static int mpc5xxx_fec_init(struct eth_device *dev, bd_t * bis)
static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
{
mpc5xxx_fec_priv *fec = (mpc5xxx_fec_priv *)dev->priv;
#ifndef CONFIG_MOTIONPRO
const uint8 phyAddr = CONFIG_PHY_ADDR; /* Only one PHY */
#endif /* !CONFIG_MOTIONPRO */
#if (DEBUG & 0x1)
printf ("mpc5xxx_fec_init_phy... Begin\n");
@ -437,7 +435,6 @@ static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
* PHY initialization for the Motion-PRO board, until a proper fix is found.
*/
#ifndef CONFIG_MOTIONPRO
if (fec->xcv_type != SEVENWIRE) {
/*
* Set MII_SPEED = (1/(mii_speed * 2)) * System Clock
@ -560,7 +557,6 @@ static int mpc5xxx_fec_init_phy(struct eth_device *dev, bd_t * bis)
}
}
#endif /* !CONFIG_MOTIONPRO */
#if (DEBUG & 0x2)
if (fec->xcv_type != SEVENWIRE)

2
include/configs/motionpro.h
View File

@ -76,7 +76,7 @@
#define CONFIG_MPC5xxx_FEC 1
#define CONFIG_PHY_ADDR 0x2
#define CONFIG_PHY_TYPE 0x79c874
#define CONFIG_RESET_PHY_R 1
/*
* Autobooting