From e175eacc87c3a9e4dad0799fee0e95732520afc7 Mon Sep 17 00:00:00 2001 From: Martin Krause Date: Thu, 3 Apr 2008 13:37:56 +0200 Subject: IDE: fix bug in reset sequence According to the ata (ata5) specification the RESET- signal shall be asserted for at least 25 us. Without this patch, the RESET- signal is asserted on some boards for only < 1 us (e. g. on the TQM5200). This patch adds a general delay of 25 us to the RESET- signal. Without this patch a Platinum 4 GiB CF card is not recognised properly on boards with a TQM5200 (STK52xx, TB5200). Signed-off-by: Martin Krause --- common/cmd_ide.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'common') diff --git a/common/cmd_ide.c b/common/cmd_ide.c index 8ace970c73..f9cd422f21 100644 --- a/common/cmd_ide.c +++ b/common/cmd_ide.c @@ -1529,6 +1529,9 @@ static void ide_reset (void) ide_set_reset (1); /* assert reset */ + /* the reset signal shall be asserted for et least 25 us */ + udelay(25); + WATCHDOG_RESET(); #ifdef CFG_PB_12V_ENABLE -- cgit v1.2.1