From mboxrd@z Thu Jan 1 00:00:00 1970 From: tony@atomide.com (Tony Lindgren) Date: Tue, 26 Nov 2013 14:05:43 -0800 Subject: [PATCH 6/7] ARM: OMAP: Disable POSTED mode for errata i103 and i767 In-Reply-To: <5293CC93.6040603@ti.com> References: <1385415876-12387-1-git-send-email-joelf@ti.com> <1385415876-12387-7-git-send-email-joelf@ti.com> <20131125221437.GW10023@atomide.com> <5293CC93.6040603@ti.com> Message-ID: <20131126220543.GP26766@atomide.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Joel Fernandes [131125 14:18]: > On 11/25/2013 04:14 PM, Tony Lindgren wrote: > > * Joel Fernandes [131125 13:46]: > >> Enabling of Posted mode is seen to cause problems on dmtimer modules on AM33xx > >> (much like other OMAPs). Reference discussions on forums [1] [2]. Earlier > >> patch solving this on other OMAPs [3]. > >> > >> For OMAP SoCs with this errata, the fix has been to not enable Posted mode. > >> However, on some SoCs (atleast AM33xx) which carry this errata, Posted mode > >> is enabled on reset. So we not only need to ignore enabling of the POSTED bit > >> when the timer is requested, but also disable Posted mode if errata is present. > > > > This could explain some occasional lost timers I saw a while back when > > testing things.. We most likely should merge for the -rc series with cc stable. > > Sure, I agree. > > > > > Does this depend on the other patches in this series? > > > > No it doesn't depend. OK thanks applying into omap-for-v3.13/fixes-take4. Tony