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? Very strange that a DT only patch would cause a gcc related regression and if it does, it should be investigated. I don't think requiring gcc7 is an appropriate solution. @Chen-Yu, @Maxime: are you guys OK with requiring gcc7 for working upstream boot for A10? 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
