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| author | Andy Fleming <afleming@freescale.com> | 2009-02-03 18:26:41 -0600 |
|---|---|---|
| committer | Ben Warren <biggerbadderben@gmail.com> | 2009-02-09 22:52:32 -0800 |
| commit | 9e5be8214ba751436e57c3be044bf6dccb9a6687 (patch) | |
| tree | c3e969d2f69338bc9b1f078a45c40238004fdf67 /drivers/net/tsec.c | |
| parent | 09fcc8b5d86903b76e7e4d1d879d6f4bca25c27b (diff) | |
| download | u-boot-imx-9e5be8214ba751436e57c3be044bf6dccb9a6687.zip u-boot-imx-9e5be8214ba751436e57c3be044bf6dccb9a6687.tar.gz u-boot-imx-9e5be8214ba751436e57c3be044bf6dccb9a6687.tar.bz2 | |
tsec: Fix a bug in soft-resetting
SOFT_RESET must be asserted for at least 3 TX clocks. Usually, that's about 30
clock cycles, so it's been mostly working. But we had no guarantee, and at
slower bitrates, it's just over a microsecond (over 1000 clock cycles). This
enforces a 2 microsecond gap between assertion and deassertion.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
Diffstat (limited to 'drivers/net/tsec.c')
| -rw-r--r-- | drivers/net/tsec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c index dc90f23..9edba6a 100644 --- a/drivers/net/tsec.c +++ b/drivers/net/tsec.c @@ -158,6 +158,7 @@ int tsec_initialize(bd_t * bis, struct tsec_info_struct *tsec_info) /* Reset the MAC */ priv->regs->maccfg1 |= MACCFG1_SOFT_RESET; + udelay(2); /* Soft Reset must be asserted for 3 TX clocks */ priv->regs->maccfg1 &= ~(MACCFG1_SOFT_RESET); #if defined(CONFIG_MII) || defined(CONFIG_CMD_MII) \ |