From mboxrd@z Thu Jan 1 00:00:00 1970 From: vladoman@gmail.com (Vladimir Pantelic) Date: Tue, 17 Jun 2014 15:45:59 +0200 Subject: Unifying cape overlays into boot .dtb for BeagleBoard.org boards In-Reply-To: <20140617090931.GB3705@n2100.arm.linux.org.uk> References: <20140617090931.GB3705@n2100.arm.linux.org.uk> Message-ID: <53A04697.1020904@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 06/17/2014 11:09 AM, Russell King - ARM Linux wrote: > Here's the most obvious question in the world on this topic. Are capes > hot-pluggable? "capes" as in Beaglebone capes might not be due to the mechanical constraints you listed. "capes" as a concept of pluggable hardware might well be. here is a real world example of commercially available pluggable hardware add-ons on a Linux system back from 2008: http://en.wikipedia.org/wiki/Archos_Generation_6#Accessories depending on the add-on, different interfaces like GPIO, UART, USB, SPI using the same pins were used and there was no reboot needed to load a new hardware configuration or change the pinmux