From mboxrd@z Thu Jan 1 00:00:00 1970 From: jonathan.austin@arm.com (Jonathan Austin) Date: Fri, 15 Mar 2013 10:46:13 +0000 Subject: Anyone implement Cortex A9 FIQ In-Reply-To: References: Message-ID: <5142FBF5.3010307@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Frank, On 15/03/13 07:38, Frank Li wrote: > All: > Recently, we need real time work run in cortex A9. > Did anyone use FIQ on Cortex A9? > What are you actually trying to do? There's quite a lot more complexity to being able to do real-time work on an A-class processor than just using FIQ, and much of that would be platform specific. For example on ARMv7A, we generally can't assume that FIQ can be used by the non-secure world... Jonny