On 01/08/16 02:28, Masahiro Yamada wrote: > 2016-07-29 17:10 GMT+09:00 Marc Zyngier <marc.zyngier@xxxxxxx>: >> On 29/07/16 04:53, Masahiro Yamada wrote: >>> Hi. >>> >>> >>> I noticed my board would not work any more >>> when pulling recent updates. >>> >>> >>> I did "git-bisect" and I found the following commit is it. >> >> It would help if you did post the log showing the failure. >> >> What if you apply the following patch: >> >> https://git.kernel.org/cgit/linux/kernel/git/maz/arm-platforms.git/diff/arch/arm64/boot/dts/socionext/uniphier-ph1-ld20.dtsi?h=timers/level-trigger&id=95e1fd920fcadce81626cfa9bd6af1a361f17e58 >> > > Hi Mark, > > Yes, it worked. > > But I did not understand why you changed the 3rd cell to 0xf08. > > > The binding of arm,gic-v3.txt says as follows: > > > The 3rd cell is the flags, encoded as follows: > bits[3:0] trigger type and level flags. > 1 = edge triggered > 4 = level triggered > > > Only 1 and 4 are defined for the bits[3:0]. Ah, I didn't realize you were using GICv3. If you look at the documentation for the A72 timers: http://infocenter.arm.com/help/topic/com.arm.doc.100095_0003_05_en/way1382454511590.html You'll notice that all timers have an active-low output. Switching to "level triggered" fixes the issue in general. > 0xf04 worked, too. > > Which is correct? None of them. 0x04 is the correct answer (as we don't encode the affinity in the 3rd cell. Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
