From mboxrd@z Thu Jan 1 00:00:00 1970 From: javier.martin@vista-silicon.com (javier Martin) Date: Mon, 18 Apr 2011 11:23:32 +0200 Subject: The cleanest way to power off a board inside the kernel. Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org There are some boards out there, including Beagleboard xM, which are provided with a PMIC that is able to enable or disable power supply for the system. The interfaces used for that purpose usually include gpios or I2C. What is the cleanest way, provided there are some, to tell those circuits at the end of the power down process to cut off the power supply of the system? At first glance I thought there could be a board specific hook for that purpose but I couldn't find any, just an endless loop "while (1);" instead. -- Javier Martin Vista Silicon S.L. CDTUC - FASE C - Oficina S-345 Avda de los Castros s/n 39005- Santander. Cantabria. Spain +34 942 25 32 60 www.vista-silicon.com