From: Martin Krause Date: Thu, 3 Apr 2008 11:37:56 +0000 (+0200) Subject: IDE: fix bug in reset sequence X-Git-Tag: v2008.10-rc1~461 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e175eacc87c3a9e4dad0799fee0e95732520afc7;p=platform%2Fkernel%2Fu-boot.git 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 --- diff --git a/common/cmd_ide.c b/common/cmd_ide.c index 8ace970..f9cd422 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