From 3887c3fbdbbe6bbb4df60ed415c8e1ab9fe56b5e Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Wed, 23 Sep 2009 07:56:08 +0200 Subject: mucmc52, uc101: delete ata@3a00 node, if no CF card is detected U-Boot can detect if an IDE device is present or not. If not, and this new config option is activated, U-Boot removes the ATA node from the DTS before booting Linux, so the Linux IDE driver does not probe the device and crash. This is needed for buggy hardware (uc101) where no pull down resistor is connected to the signal IDE5V_DD7. Signed-off-by: Heiko Schocher --- common/cmd_ide.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'common/cmd_ide.c') diff --git a/common/cmd_ide.c b/common/cmd_ide.c index 4d7a0ac9e..ec9a1df38 100644 --- a/common/cmd_ide.c +++ b/common/cmd_ide.c @@ -1624,6 +1624,14 @@ static void ide_led (uchar led, uchar status) #endif /* CONFIG_IDE_LED */ +#if defined(CONFIG_OF_IDE_FIXUP) +int ide_device_present(int dev) +{ + if (dev >= CONFIG_SYS_IDE_MAXBUS) + return 0; + return (ide_dev_desc[dev].type == DEV_TYPE_UNKNOWN ? 0 : 1); +} +#endif /* ------------------------------------------------------------------------- */ #ifdef CONFIG_ATAPI -- cgit v1.2.3