From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: paul@pwsan.com, linux-omap@vger.kernel.org, b-cousson@ti.com
Cc: archit@ti.com, Tomi Valkeinen <tomi.valkeinen@ti.com>
Subject: [PATCHv2 0/5] OMAP DSS HWMOD fixes
Date: Mon, 8 Aug 2011 12:15:09 +0300 [thread overview]
Message-ID: <1312794914-22894-1-git-send-email-tomi.valkeinen@ti.com> (raw)
Second try with the DSS HWMODs
This set fixes the DSS clocks in HWMOD data, and implements a new reset
mechanism for dss_core.
The new dss_reset function doesn't actually do a reset, it just enables all DSS
clocks and waits for the reset to complete. This should be better approach than
actually doing a reset, because:
OMAP4 - dss_core HW doesn't contain a SW reset bit so doing a reset is
impossible. But after power-on we need to enable all DSS clocks and wait for
the power-on reset to complete.
OMAP2/3 - dss_core does have a SW reset bit, but resetting dss_core also resets
all the other DSS modules. This means that the other modules could be left
uninitialized, as the hwmod code handles all modules independently, and in this
case initializes only dss_core's registers. Thus dss_core's reset shouldn't be
used, and we should only verify that the power-on reset has completed.
Tested on OMAP4 and OMAP3.
The first two HWMOD patches (for OMAP2/3) are not changed since v1.
Tomi
Tomi Valkeinen (5):
OMAP2xxx: HWMOD: fix DSS opt clocks
OMAP3: HWMOD: fix DSS opt clocks
OMAP4: HWMOD: fix DSS opt clocks
OMAP2/3: HWMOD: Add SYSS_HAS_RESET_STATUS for dss
OMAP: HWMOD: Unify DSS resets for all OMAPs
arch/arm/mach-omap2/common-board-devices.h | 4 ++
arch/arm/mach-omap2/display.c | 35 ++++++++++++++++++++
arch/arm/mach-omap2/omap_hwmod_2420_data.c | 15 +++++++-
arch/arm/mach-omap2/omap_hwmod_2430_data.c | 15 +++++++-
.../mach-omap2/omap_hwmod_2xxx_3xxx_ipblock_data.c | 5 ++-
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 35 +++++++++++++++++--
arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 18 +++-------
7 files changed, 106 insertions(+), 21 deletions(-)
--
1.7.4.1
next reply other threads:[~2011-08-08 9:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-08 9:15 Tomi Valkeinen [this message]
2011-08-08 9:15 ` [PATCHv2 1/5] OMAP2xxx: HWMOD: fix DSS opt clocks Tomi Valkeinen
2011-08-08 9:15 ` [PATCHv2 2/5] OMAP3: " Tomi Valkeinen
2011-08-08 9:15 ` [PATCHv2 3/5] OMAP4: " Tomi Valkeinen
2011-08-09 16:17 ` Cousson, Benoit
2011-08-08 9:15 ` [PATCHv2 4/5] OMAP2/3: HWMOD: Add SYSS_HAS_RESET_STATUS for dss Tomi Valkeinen
2011-08-08 9:15 ` [PATCHv2 5/5] OMAP: HWMOD: Unify DSS resets for all OMAPs Tomi Valkeinen
2011-08-20 5:30 ` Paul Walmsley
2011-08-20 6:26 ` Paul Walmsley
2011-08-22 7:00 ` Tomi Valkeinen
2011-08-22 19:10 ` Paul Walmsley
2011-08-08 11:43 ` [PATCHv2 0/5] OMAP DSS HWMOD fixes Archit Taneja
2011-08-08 12:03 ` Tomi Valkeinen
2011-08-08 12:21 ` Archit Taneja
2011-08-08 12:23 ` Tomi Valkeinen
2011-08-18 7:21 ` Tomi Valkeinen
2011-08-21 6:03 ` Paul Walmsley
2011-08-22 6:35 ` Tomi Valkeinen
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