Hi Daniel, Thanks for the feedback.
> -----Original Message----- > From: Daniel Lezcano <[email protected]> > Sent: 19 November 2018 10:26 > To: Biju Das <[email protected]>; Rob Herring > <[email protected]>; Mark Rutland <[email protected]> > Cc: Simon Horman <[email protected]>; Magnus Damm > <[email protected]>; [email protected]; > [email protected]; Geert Uytterhoeven > <[email protected]>; Chris Paterson > <[email protected]>; Thomas Gleixner <[email protected]>; > John Stultz <[email protected]>; Fabrizio Castro > <[email protected]> > Subject: Re: [PATCH] arm64: dts: renesas: r8a7796: Add CMT device nodes > > On 26/10/2018 10:25, Biju Das wrote: > > This patch adds CMT{0|1|2|3} device nodes for r8a7796 SoC. > > > > Signed-off-by: Biju Das <[email protected]> > > --- > > This patch is tested against renesas-dev > > > > I have executed on inconsistency-check, nanosleep and > > clocksource_switch selftests on this arm64 SoC. The > > inconsistency-check and nanosleep tests are working fine.The > > clocksource_switch asynchronous test is failing due to inconsistency-check > failure on "arch_sys_counter". > > > > But if i skip the clocksource_switching of "arch_sys_counter", the > > asynchronous test is passing for CMT0/1/2/3 timer. > > > > Has any one noticed this issue? > > So now that you mention that, I've been through the clocksource_switch on > another ARM64 platform (hikey960) and disabled the > ARM64_ERRATUM_858921 config option. I can see the same issue. > > Is this option set on your config ? No. As per " config ARM64_ERRATUM_858921", it is "Workaround for Cortex-A73 erratum 858921" Our SoC is 2xCA-57 + 4 x CA-53. Does it impact CA-57 + CA_53? Any way I will enable this config option and will provide you the results. The following errata is set in our kernel config. CONFIG_ARM64_ERRATUM_826319=y CONFIG_ARM64_ERRATUM_827319=y CONFIG_ARM64_ERRATUM_824069=y CONFIG_ARM64_ERRATUM_819472=y CONFIG_ARM64_ERRATUM_832075=y CONFIG_ARM64_ERRATUM_834220=y CONFIG_ARM64_ERRATUM_845719=y CONFIG_ARM64_ERRATUM_843419=y CONFIG_ARM64_ERRATUM_1024718=y CONFIG_ARM64_ERRATUM_1188873=y Regards. Biju Renesas Electronics Europe Ltd, Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, UK. Registered in England & Wales under Registered No. 04586709.
