Re: [PATCH] arm: footbridge_defconfig: disable IDE subsystem

From: Russell King - ARM Linux
Date: Fri Aug 14 2015 - 13:44:09 EST


On Fri, Aug 14, 2015 at 07:04:23PM +0200, Bartlomiej Zolnierkiewicz wrote:
> This patch disables deprecated IDE subsystem in footbridge_defconfig
> (no IDE host drivers are selected in this config so there is no valid
> reason to enable IDE subsystem itself).

That's actually incorrect. I use IDE on Footbridge because it works
loads with my CY82C693 board. I never submitted the patches which make
CY82C693 work on ARM though...

However, the CY82C693 must not be allowed to use DMA (which is why the
ATA driver can't be used) - if it does, it locks the PCI bus. It's
a hardware incompatibility between some PCI devices and the Footbridge.

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