Generation of 1ms granular GPTIMER events using 32KHz or system
clocks as inputs does not have whole number count value to load
into the register. This inaccurate count value with respect to 1ms
period leads to time drift subsequently. OMAP3 and later silicons
have dedicated registers for
NAK - my prev comments are not fixed here either.
On 06/21/2010 03:23 PM, Tarun Kanti DebBarma wrote:
Generation of 1ms granular GPTIMER events using 32KHz or system
clocks as inputs does not have whole number count value to load
into the register. This inaccurate count value with respect to
Nishant,
-Original Message-
From: Nishanth Menon [mailto:menon.nisha...@gmail.com]
Sent: Monday, June 21, 2010 4:15 PM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; R, Sricharan
Subject: Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction
NAK - my prev comments
] OMAP:GPTIMER:1ms tick generation correction
NAK - my prev comments are not fixed here either.
On 06/21/2010 03:23 PM, Tarun Kanti DebBarma wrote:
Generation of 1ms granular GPTIMER events using 32KHz or system
clocks as inputs does not have whole number count value to load
into the register
-Original Message-
From: Menon, Nishanth
Sent: Monday, June 21, 2010 6:27 PM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; R, Sricharan
Subject: Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction
DebBarma, Tarun Kanti had written, on 06/21/2010 07:51 AM
DebBarma, Tarun Kanti had written, on 06/21/2010 08:19 AM, the following:
[...]
---
arch/arm/plat-omap/dmtimer.c | 131
+
arch/arm/plat-omap/include/plat/dmtimer.h |1 +
2 files changed, 96 insertions(+), 36 deletions(-)
diff --git
-Original Message-
From: Menon, Nishanth
Sent: Monday, June 21, 2010 6:56 PM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; R, Sricharan
Subject: Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction
DebBarma, Tarun Kanti had written, on 06/21/2010 08:19 AM
Doesn't the generic clock code have logic
to handle such rounding issues? I'm pretty
sure I remember dealing with that issue for
32K timers on AT91 processors. If so that
means the setup is done wrong, and is fixable.
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David,
-Original Message-
From: David Brownell [mailto:davi...@pacbell.net]
Sent: Monday, June 21, 2010 7:51 PM
To: DebBarma, Tarun Kanti; Nishanth Menon
Cc: linux-omap@vger.kernel.org; R, Sricharan
Subject: Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction
Doesn't
Kevin,
-Original Message-
From: Kevin Hilman [mailto:khil...@deeprootsystems.com]
Sent: Monday, June 21, 2010 9:24 PM
To: DebBarma, Tarun Kanti
Cc: linux-omap@vger.kernel.org; R, Sricharan
Subject: Re: [PATCH v2] OMAP:GPTIMER:1ms tick generation correction
Tarun Kanti DebBarma
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