Hi Eric, According to the information provided by Thomas, the lowest kernel version for Exynos4210 device with device tree support is 3.2-rc1. The current kernel version in Samsung Origen Android image is 3.0.4+, so there is a long time to wait until it's updated by Samsung landing team.
Therefore, I would like to know about the other platforms situation. Would you like to share some relevant information from your side? Is there anything I can integrate to the iMX53 Android (ICS) image? Thank you! BR Botao Sun On Wednesday, November 30, 2011 12:32 PM, Botao Sun wrote: > Hi Thomas, > > Thank you for your so quickly response! :) > > According to your information, I prefer not to back-port those patches. > > @Angus, The waiting time is even longer than I thought: 3.1 - 3.2rc1, > and looks like it's impossible to get 3.2 kernel in the Origen Android > build before the end of 11.12. Would you estimate a time frame for the > 3.2 kernel upgrade work? Then before that, I will focus on the other > tasks of mine. > > Thank you! > > > BR > Botao Sun > > On Wed, Nov 30, 2011 at 12:20 PM, Thomas Abraham > <thomas.abra...@linaro.org <mailto:thomas.abra...@linaro.org>> wrote: > > Hi Botao, > > On 30 November 2011 09:36, Botao Sun <botao....@linaro.org > <mailto:botao....@linaro.org>> wrote: > > Hi Angus & Grant, > > > > Because the Linaro Android 11.11 release has been done > successfully, I have > > some time to continue to work on device tree topic, here is my > blue print > > for it: > > > > > > https://blueprints.launchpad.net/linaro-android/+spec/linaro-android-origen-device-tree > > > > Therefore, I would like to know what I can do for this in the > 11.12 cycle - > > from now to the 18th December 2011. For Samsung Origen Android > build, the > > latest kernel version I got is still 3.0.4+, so I think there is > no any > > device tree stuff in it. > > > > @Angus, Would you give me a brief about the device tree support > status on > > our current 3.0.4+ kernel? Will you upgrade it to the 3.1 in > 11.12 cycle? > > > > @Thomas, In this blue print: > > > > https://blueprints.launchpad.net/linaro-android/+spec/linaro-platforms-lc4.11-android-device-tree, > > Tony mentioned that you has upstreamed the initial support for > device tree. > > However, it depends on the 3.1 kernel upgrade. I would like to > know that is > > there any possible that I can do something without the kernel > upgrade? > > All the existing Exynos4210 device tree patches are based on > linux-3.2-rc1. There are about 35+ device tree support patches > covering about 10 peripherals. Most of these patches will not apply > cleanly to a previous version of the kernel. And in some cases, these > patches depend on other patches merged during 3.2 merge window (like > the GIC dt support). Though it might be possible to backport these > patches, the effort would huge and not recommended. > > Thanks, > Thomas. > > > > > I currently feel that this work highly depends on the outcome of > landing > > team and kernel group, so before I get something from them, I'm > afraid that > > I can't do any "real" work on this. > > > > Thank you all for your help! > > > > > > BR > > Botao Sun > > > > > >
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