[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains... | linux-arm-kernel

[PATCH 00/12] ARM: OMAP2+: powerdomain updates after the functional power state conversion · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 01/12] ARM: OMAP2+: powerdomain: consolidate arch_pwrdm check code · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 02/12] ARM: OMAP2+: PM/powerdomain: move the power state time tracking into the powerdomain code · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 03/12] ARM: OMAP2+: powerdomain: split pwrdm_state_switch() · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 04/12] ARM: OMAP2+: PM: clean up some debugfs functions · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 06/12] ARM: OMAP2+: CM: use the cached copy of the clockdomain's hwsup state · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 07/12] ARM: OMAP2+: powerdomain: cache the powerdomain next power state · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 08/12] ARM: OMAP2+: powerdomain: cache the powerdomain's previous power state · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · Vaibhav Hiremath <hidden> · 2012-12-12
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · Jon Hunter <hidden> · 2012-12-19
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · paul@pwsan.com (Paul Walmsley) · 2012-12-20
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · Santosh Shilimkar <hidden> · 2012-12-21
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · Bedia, Vaibhav <hidden> · 2012-12-26
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · Bedia, Vaibhav <hidden> · 2012-12-26
[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on · paul@pwsan.com (Paul Walmsley) · 2012-12-26
[PATCH 10/12] ARM: OMAP2+: powerdomain: skip previous-power-state read if next_pwrst is ON · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 11/12] ARM: OMAP2xxx: powerdomain: add previous power state tracking · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 12/12] ARM: OMAP2xxx: PM: add pwrdm_(pre|post)_transition() calls to the 2xxx PM code · paul@pwsan.com (Paul Walmsley) · 2012-12-09
[PATCH 00/12] ARM: OMAP2+: powerdomain updates after the functional power state conversion · Tero Kristo <hidden> · 2013-01-04

STALE4927d

[PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on

From: Santosh Shilimkar <hidden>
Date: 2012-12-21 06:33:33
Also in: linux-omap

On Thursday 20 December 2012 10:52 PM, Paul Walmsley wrote:

On Wed, 19 Dec 2012, Jon Hunter wrote:

quoted

My understanding is that for OMAP4 devices, the core power domain may
not be active the same time as the MPU power domain. The Cortex-A9 has
the ability to access some peripherals (such as timer, McBSP) via a
private bus that does not require the core domain to be active. This is
a difference from OMAP3 devices, where the core would always be on with
the MPU power domain.

You are absolutely right and I will drop that part from this patch.

Just to be clear, MPU has direct path to ABE domain peripherals on
OMAP4. As Jon pointed out MCBSP and few timers are put under this
domain can be directly accessed by MPU without L3. ABE also can
be accessed via L3 by MPU. ABE has a dual map with MPU.


Regards
Santosh

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