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 --- README | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'README') diff --git a/README b/README index ce86e74baf..dee0e674a1 100644 --- a/README +++ b/README @@ -388,6 +388,15 @@ The following options need to be configured: This define fills in the correct boot CPU in the boot param header, the default value is zero if undefined. + CONFIG_OF_IDE_FIXUP + + 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. + - vxWorks boot parameters: bootvx constructs a valid bootline using the following -- cgit v1.2.1