From: Mike Turquette <mturquette@gmail.com>
To: linux-omap@vger.kernel.org
Cc: Vishwanath Sripathy <vishwanath.bs@ti.com>,
Thara Gopinath <thara@ti.com>,
Shweta Gulati <shweta.gulati@ti.com>, Nishanth Menon <nm@ti.com>,
Kevin Hilman <khilman@deeprootsystems.com>
Subject: [PATCH 0/4] OMAP: PM: introduce Adaptive Body-Bias LDO
Date: Fri, 16 Apr 2010 16:33:20 -0500 [thread overview]
Message-ID: <1271453603-21929-1-git-send-email-mturquette@ti.com> (raw)
This patch series introduces Forward Body-Bias (FBB), which is one
technique possible using the Adaptive Body-Bias (ABB) LDO. FBB boosts
voltage on VDD1 PMOS back gates which helps cold devices with weak
silicon characteristics sustain voltage at high OPPs.
All OMAP devices built on the 45nm process have ABB as a part of
SmartReflex2. This patchset introduces it for OMAP 3630 and OMAP 4 will
make use of ABB in the future.
Patch series is based on pm-wip-sr and tested on Zoom3. Please note
that the final patch in the series is a total hack and only meant for
those wishing to test this new feature.
arch/arm/mach-omap2/cpufreq34xx.c | 8 +-
arch/arm/mach-omap2/prm-regbits-34xx.h | 22 +++++
arch/arm/mach-omap2/prm.h | 6 ++
arch/arm/mach-omap2/voltage.c | 130 ++++++++++++++++++++++++++++-
arch/arm/plat-omap/include/plat/control.h | 4 +
5 files changed, 163 insertions(+), 7 deletions(-)
next reply other threads:[~2010-04-16 21:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-16 21:33 Mike Turquette [this message]
2010-04-16 21:33 ` [PATCH 1/3] OMAP: PM: update PRM registers for ABB Mike Turquette
2010-04-19 21:23 ` Paul Walmsley
2010-04-16 21:33 ` [PATCH 2/3] OMAP3630: PM: implement Foward Body-Bias for OPP1G Mike Turquette
2010-04-19 7:46 ` Eduardo Valentin
2010-04-21 21:21 ` Mike Turquette
2010-04-22 13:56 ` Nishanth Menon
2010-04-23 7:03 ` Eduardo Valentin
2010-04-20 5:42 ` Paul Walmsley
2010-04-21 22:13 ` Mike Turquette
2010-05-21 12:44 ` Eduardo Valentin
2010-05-21 12:47 ` Eduardo Valentin
2010-05-21 15:02 ` Mike Turquette
2010-05-21 16:30 ` Eduardo Valentin
2010-04-16 21:33 ` [PATCH 3/3] HACK: OMAP3630: PM: allow testing of DVFS & FBB Mike Turquette
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