On Wed, Dec 13, 2017 at 9:13 AM, Priit Laes <plaes@xxxxxxxxx> wrote: > On Wed, Dec 13, 2017 at 05:09:33PM +0000, Priit Laes wrote: >> On Tue, Dec 12, 2017 at 01:24:52PM -0800, Kevin Hilman wrote: >> > On Tue, Dec 12, 2017 at 9:26 AM, Priit Laes <plaes@xxxxxxxxx> wrote: >> > > On Mon, Dec 11, 2017 at 02:22:30PM -0800, Kevin Hilman wrote: >> > >> On Sun, Mar 26, 2017 at 10:20 AM, Priit Laes <plaes@xxxxxxxxx> wrote: >> > >> > Convert sun4i-a10.dtsi to new CCU driver. >> > >> > >> > >> > Signed-off-by: Priit Laes <plaes@xxxxxxxxx> >> > >> >> > >> I finally got around to bisecting a mainline boot failure on >> > >> sun4i-a10-cubieboard that's been happening for quite a while. Based >> > >> on on kernelci.org, it showed up sometime during the v4.15 merge >> > >> window[1]. It bisected down to this commit (in mainline as commit >> > >> 41193869f2bdb585ce09bfdd16d9482aadd560ad). >> > >> >> > >> When it fails, there is no output on the serial console, so I don't >> > >> know exactly how it's failing, just that it no longer boots. >> > > >> > > We tried out latest 4.15 with various compilers and it works: >> > > - gcc version 7.1.1 20170622 (Red Hat Cross 7.1.1-3) (GCC) - A10 Gemei G9 tablet >> > > - gcc 7.2.0-debian - A10 Cubieboard >> > >> > And you can reproduce the bug with gcc5 or gcc6? >> >> Tried following commits on Gemei G9 (A10 tablet): >> * 4.15.0-rc3-00037-gd39a01eff9af - latest master >> * 4.14.0-rc1-00002-g41193869f2bd - the exact commit, causing the issue. >> >> With the same Linaro toolchain: >> (gcc version 5.3.1 20160412 (Linaro GCC 5.3-2016.05)) > > And I also tried the same dtb and zImage from kernelci page [1] and it works with > that too... > > https://storage.kernelci.org/mainline/master/v4.15-rc3/arm/sunxi_defconfig/ Can you share a full boot-log (including all the u-boot output etc.) so I can see exactly how the kernel is being loaded? Especially the u-boot version? As $SUBJECT patch seems to be changing clocks around, perhaps this is an issue where some u-boot dependency is uncovered, and older versions of u-boot don't play well with this change. Kevin -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
