From mboxrd@z Thu Jan 1 00:00:00 1970 From: khilman@linaro.org (Kevin Hilman) Date: Thu, 29 Aug 2013 15:20:27 -0700 Subject: [PATCHv3 0/9] ARM: OMAP2+: AM33XX: Add suspend-resume support In-Reply-To: <521FBD6B.3020208@ti.com> (Dave Gerlach's message of "Thu, 29 Aug 2013 16:30:19 -0500") References: <1375811376-49985-1-git-send-email-d-gerlach@ti.com> <5211E3F6.6090108@ti.com> <52125A39.3010008@ti.com> <87vc2qyjao.fsf@linaro.org> <521FBD6B.3020208@ti.com> Message-ID: <87mwo0rvf8.fsf@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Dave Gerlach writes: [...] >>> >>> The working repo for this version of the patch series can be found here: >>> >>> git://github.com/dgerlach/linux-pm.git am335x-3.11rc4-suspend-resume >> >> I tried this branch on my beaglebone black, and it's not fully resuming. >> Suspend seems to be working (power draw goes from ~1W to ~130mW) and >> pressing a key on the UART seems to be waking up the SoC (power draw >> goes to ~600mW) but I don't ever get the console back. >> >> Is there a specific version of the firmware I should be using? >> >> Kevin >> > > Kevin, I agree there does seem to be some issues with Beaglebone > black. I can confirm it works on BeagleBone White and the large am335 > EVM, I am working on pinpointing the issue on beaglebone black, seems > that support isn't quite there yet. OK, I tried the above branch on my BB white, using prebuilt firmware from the next3 branch of the am33x-cm3 repo and it's suspending/resuming fine. Thanks for the pointer. FYI, measuring at the 5V supply, it goes from ~1.6W at idle down to ~700mW in suspend. The black goes from ~1W down to an impressive 130mW but of course, it doesn't wake up so maybe it's not that impressive. ;) Kevin