From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-x243.google.com (mail-pa0-x243.google.com [IPv6:2607:f8b0:400e:c03::243]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3rLS5V3gCxzDqjw for ; Fri, 3 Jun 2016 12:02:06 +1000 (AEST) Received: by mail-pa0-x243.google.com with SMTP id di3so4601831pab.0 for ; Thu, 02 Jun 2016 19:02:06 -0700 (PDT) Subject: Re: [PATCH 1/2] powerpc/timer - large decrementer support To: Michael Neuling , Oliver O'Halloran , linuxppc-dev@lists.ozlabs.org References: <1464675936.30958.22.camel@neuling.org> <1464679016-10347-1-git-send-email-oohall@gmail.com> <1464758911.30958.113.camel@neuling.org> Cc: Jack Miller From: Balbir Singh Message-ID: Date: Fri, 3 Jun 2016 12:01:56 +1000 MIME-Version: 1.0 In-Reply-To: <1464758911.30958.113.camel@neuling.org> Content-Type: text/plain; charset=utf-8 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 01/06/16 15:28, Michael Neuling wrote: > On Tue, 2016-05-31 at 17:16 +1000, Oliver O'Halloran wrote: >> POWER ISA v3 adds large decrementer (LD) mode of operation which >> increases >> the size of the decrementer register from 32 bits to an implementation >> defined with of up to 64 bits. >> >> This patch adds support for the LD on processors with the >> CPU_FTR_ARCH_300 >> cpu feature flag set. For CPUs with this feature LD mode is enabled when >> when the ibm,dec-bits devicetree property is supplied for the boot CPU. >> The >> decrementer value is a signed quantity (with negative values indicating a >> pending exception) and this property is required to find the maximum >> positive decrementer value. If this property is not supplied then the >> traditional decrementer width of 32 bits is assumed and LD mode is >> disabled. >> >> This patch was based on initial work by Jack Miller. >> >> Signed-off-by: Oliver O'Halloran >> Cc: Michael Neuling > > Acked-by: Michael Neuling > >> Cc: Balbir Singh >> Cc: Jack Miller I had reviewed a previous post of this patchset Reviewed-by: Balbir Singh