I am using openwrt version 12.09. There are three patch folders "patches-2.6.32" "patches-2.6.36" "patches-3.0". I think they are all special patch for omap35x. But I see the config file is "config-2.6.32", and in the "Makefile", it has "LINUX_VERSION:=2.6.32.33", so it means openwrt for omap35xx  uses the 2.6.32.33 kernel, my question is the openWRT will also apply "patches-2.6.36" "patches-3.0" or just apply "patches-2.6.32"?

And If I set  "LINUX_VERSION:=3.0" in "Makefile" and use "config-3.0", it will only apply the "patches-3.0" or it will also apply "patches-2.6.32" and "patches-2.6.36"

If you wanna find out yourself, do this under your OpenWRT root directory:

1. Execute make target/linux/prepare QUILT=1

2. Change directory to buil_dir/target-<platform>/linux-<platform>/linux-<version> directory, then execute quilt series and see which patches are listed.

Thank you very much, mazilo.

I did the test.

It will apply the generic patches first, then apply the matched platform patch. If use  "LINUX_VERSION:=3.0", it only applies "patches-3.0"

one more question:
I can get the whole beaglebone-3.2 patchset for kernel3.2 from the link: https://github.com/beagleboard/kernel

How can I apply all the patches? Should I just create one folder named "patches-3.2" and put all the patches into the folder?

Or I have already one kernel version 3.2 source code for beaglebone. Can I just use this source code and apply the patches of openWRT and make openWRT run on beaglebone?

Thank you.

I have never done thing like this. However, you can give it a try. If OpenWRT doesn't support kernel v3.2, then you will have to edit the Makefile (wild guess) to include kernel v3.2.

Again, I have never done this before. So, your guess is as good as mine.

Thank you, mazilo.

By the way, how can I judge what kind of kernel the openwrt support? I know the latest version of openwrt support the kernel 3.3.8. I saw in the kernel-version.mk which is under "include", there are bunches defines about the "LINUX_VERSION". I assume openwrt supports all of them. While, I changed omap4 kernel version from 3.3.8 to 3.2.16 to test. It gives me errors as follows:

touch "/home/hui/openwrt/build_dir/linux-omap4/linux-3.2.16/.quilt_checked"
/home/hui/openwrt/scripts/kconfig.pl    > /home/hui/openwrt/build_dir/linux-omap4/linux-3.2.16/.config.target
Parse error at /home/hui/openwrt/scripts/kconfig.pl line 137.
make[4]: *** [/home/hui/openwrt/build_dir/linux-omap4/linux-3.2.16/.configured] Error 255
make[4]: Leaving directory `/home/hui/openwrt/target/linux/omap4'
make[3]: *** [compile] Error 2
make[3]: Leaving directory `/home/hui/openwrt/target/linux'
make[2]: *** [target/linux/compile] Error 2
make[2]: Leaving directory `/home/hui/openwrt'
make[1]: *** [/home/hui/openwrt/staging_dir/target-arm_v7-a_uClibc-0.9.33.2_eabi/stamp/.target_compile] Error 2
make[1]: Leaving directory `/home/hui/openwrt'
make: *** [world] Error 2

And if I still use the default setting--3.3.8, it will run successfully. So I just wonder whether the openwrt just support one kernel version? Thank you.