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Commit Graph

3918 Commits

Author SHA1 Message Date
Vaibhav Bedia
3077fe69d7 ARM: OMAP2+: AM33XX: hwmod: Update the WKUP-M3 hwmod with reset status bit
WKUP-M3 has a reset status bit (RM_WKUP_STST.WKUP_M3_LRST)
Update the WKUP-M3 hwmod data to reflect the same.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:25:16 -07:00
Vaibhav Bedia
f13966608f ARM: OMAP2+: AM33XX: hwmod: Fixup cpgmac0 hwmod entry
The current HWMOD code expects the memory region with
the IP's SYSCONFIG register to be marked with ADDR_TYPE_RT
flag.

CPGMAC0 hwmod entry specifies two memory regions and marks
both with the flag ADDR_TYPE_RT although only the 2nd region
has the SYSCONFIG register. This leads to the HWMOD code
accessing the wrong memory address for idle and standby
operations. Fix this by removing the ADDR_TYPE_RT flag from
the 1st memory region in CPGMAC0 hwmod entry.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:25:04 -07:00
Vaibhav Bedia
0bfbbded8d ARM: OMAP2+: AM33XX: hwmod: Update TPTC0 hwmod with the right flags
Third Party Transfer Controller (TPTC0) needs to be idled and
put to standby under SW control. Add the appropriate flags in
the TPTC0 hwmod entry.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:24:52 -07:00
Vaibhav Bedia
ca903b6f98 ARM: OMAP2+: AM33XX: hwmod: Register OCMC RAM hwmod
OCMC RAM lies in the PER power domain and this memory
support retention.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:24:42 -07:00
Vaibhav Bedia
1a7cb4d9c3 ARM: OMAP2+: AM33XX: CM/PRM: Use __ASSEMBLER__ macros in header files
This is necessary to ensure that macros declared here can
be reused from assembly files.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:24:30 -07:00
Vaibhav Bedia
941a98ae29 ARM: OMAP2+: AM33XX: CM: Get rid of unnecessary header inclusions
cm33xx.h unnecessarily includes a lot of header files.
Get rid of these and directly include "iomap.h" which
is needed to keep things compiling.

Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-02-08 07:12:15 -07:00
Luciano Coelho
7662a9c60f ARM: OMAP2+: omap4-panda: add UART2 muxing for WiLink shared transport
Add the UART2 muxing data to the board file (this used to be,
erroneously, done in the bootloader).

Cc: stable <stable@vger.kernel.org> [3.7]
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-21 10:39:53 -08:00
Pantelis Antoniou
034bf091b7 ARM: OMAP2+: DT node Timer iteration fix
The iterator correctly handles of_node_put() calls.
Remove it before continue'ing the loop.
Without this patch you get the following with
CONFIG_OF_DYNAMIC set:

ERROR: Bad of_node_put() on /ocp/timer@44e31000!
[<c001329c>] (unwind_backtrace+0x0/0xe0) from [<c03dd8f0>] (of_node_release+0x2c/0xa0)!
[<c03dd8f0>] (of_node_release+0x2c/0xa0) from [<c03ddea0>] (of_find_matching_node_and_match+0x78/0x90)!
[<c03ddea0>] (of_find_matching_node_and_match+0x78/0x90) from [<c06d349c>] (omap_get_timer_dt+0x78/0x90)!
[<c06d349c>] (omap_get_timer_dt+0x78/0x90) from [<c06d3664>] (omap_dm_timer_init_one.clone.2+0x34/0x2bc)!
[<c06d3664>] (omap_dm_timer_init_one.clone.2+0x34/0x2bc) from [<c06d3a2c>] (omap2_gptimer_clocksource_init.clone.4+0x24/0xa8)!
[<c06d3a2c>] (omap2_gptimer_clocksource_init.clone.4+0x24/0xa8) from [<c06cca58>] (time_init+0x20/0x30)!
[<c06cca58>] (time_init+0x20/0x30) from [<c06c9690>] (start_kernel+0x1a8/0x2fc)!

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Jon Hunter <jon-hunter@ti.com>
[tony@atomide.com: updated description per Jon]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-21 10:39:53 -08:00
Tony Lindgren
e407ee099a ARM: OMAP2+: Fix section warning for omap_init_ocp2scp()
Otherwise we will get:

WARNING: vmlinux.o(.text+0x1d4f0): Section mismatch in reference from the
function omap_init_ocp2scp() to the function .init.text:omap_device_build()
The function omap_init_ocp2scp() references
the function __init omap_device_build().
This is often because omap_init_ocp2scp lacks a __init
annotation or the annotation of omap_device_build is wrong.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-21 10:39:52 -08:00
Rob Clark
81f3ae0671 ARM: OMAP2+: fix build break for omapdrm
Fixes compile break with 3.8-rc4.

Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-21 10:34:08 -08:00
Jon Hunter
bdcc612752 ARM: OMAP2: Fix missing omap2xxx_clkt_vps_late_init function calls
During the migration to the common clock framework, calls to the
functions omap2xxx_clkt_vps_late_init() were not preserved for
OMAP2420 and OMAP2430. This causes the variables "sys_ck_rate" and
"curr_prcm_set" to be uninitialised on boot. On reboot, this causes the
following error message to be displayed because the appropriate MPU
clock frequency (derived from sys_ck_rate) cannot be found.

"Could not set MPU rate to 4294MHz"

Fix this by adding back calls to omap2xxx_clkt_vps_late_init() in the
OMAP2420 and OMAP2430 clock initialisation code.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: dropped the duplicated call to
 omap2xxx_clkt_vps_check_bootloader_rates() after consultation with Jon;
 updated patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-18 16:48:16 -07:00
Peter Ujfalusi
12d82e4b0a ARM: OMAP4: hwmod_data: Correct IDLEMODE for McPDM
McPDM need to be configured to NO_IDLE mode when it is in used otherwise
vital clocks will be gated which results 'slow motion' audio playback.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[paul@pwsan.com: copy patch description into hwmod data comments]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-18 16:48:16 -07:00
Peter Ujfalusi
981827a2b7 ARM: OMAP4: clock data: Lock ABE DPLL on all revisions
To avoid issues with audio caused by non locked ABE DPLL we should
make sure it is locked in all OMAP4 revisions.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: cleaned up patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-18 16:48:15 -07:00
Linus Torvalds
974b33586b ARM: arm-soc fixes for 3.8-rc
People are back from the holiday breaks, and it shows. Here are a bunch of
 fixes for a number of platforms:
  - A couple of small fixes for Nomadik
  - A larger set of changes for kirkwood/mvebu
    - uart driver selection, dt clocks, gpio-poweroff fixups,
      a few __init annotation fixes and some error handling improvement
      in their xor dma driver.
  - i.MX had a couple of minor fixes (and a critical one for flexcan2
    clock setup)
  - MXS has a small board fix and a framebuffer bugfix
  - A set of fixes for Samsung Exynos, fixing default bootargs and some
    Exynos5440 clock issues
  - A set of OMAP changes including PM fixes and a few sparse warning
    fixups
 
 All in all a bit more positive code delta than we'd ideally want to see
 here, mostly from the OMAP PM changes, but nothing overly crazy.
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "People are back from the holiday breaks, and it shows.  Here are a
  bunch of fixes for a number of platforms:
   - A couple of small fixes for Nomadik
   - A larger set of changes for kirkwood/mvebu
     - uart driver selection, dt clocks, gpio-poweroff fixups, a few
       __init annotation fixes and some error handling improvement in
       their xor dma driver.
   - i.MX had a couple of minor fixes (and a critical one for flexcan2
     clock setup)
   - MXS has a small board fix and a framebuffer bugfix
   - A set of fixes for Samsung Exynos, fixing default bootargs and some
     Exynos5440 clock issues
   - A set of OMAP changes including PM fixes and a few sparse warning
     fixups

  All in all a bit more positive code delta than we'd ideally want to
  see here, mostly from the OMAP PM changes, but nothing overly crazy."

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (44 commits)
  ARM: clps711x: Fix bad merge of clockevents setup
  ARM: highbank: save and restore L2 cache and GIC on suspend
  ARM: highbank: add a power request clear
  ARM: highbank: fix secondary boot and hotplug
  ARM: highbank: fix typos with hignbank in power request functions
  ARM: dts: fix highbank cpu mpidr values
  ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
  ARM: mx5: Fix MX53 flexcan2 clock
  ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
  pinctrl: mvebu: make pdma clock on dove mandatory
  ARM: Dove: Add pinctrl clock to DT
  dma: mv_xor: fix error handling for clocks
  dma: mv_xor: fix error handling of mv_xor_channel_add()
  arm: mvebu: Add missing ; for cpu node.
  arm: mvebu: Armada XP MV78230 has only three Ethernet interfaces
  arm: mvebu: Armada XP MV78230 has two cores, not one
  clk: mvebu: Remove inappropriate __init tagging
  ARM: Kirkwood: Use fixed-regulator instead of board gpio call
  ARM: Kirkwood: Fix missing sdio clock
  ARM: Kirkwood: Switch TWSI1 of 88f6282 to DT clock providers
  ...
2013-01-08 18:53:56 -08:00
Pantelis Antoniou
6adba67eb0 ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
The IRQ array must be terminated by -1 and not by -1+OMAP_INTC_START
This led to having a resource list of 100s of IRQs.

Looks like this was caused by commit a2cfc509 (ARM: OMAP3+: hwmod: Add
AM33XX HWMOD data) that probably had some search and replace updates
done for the patch for sparse irq support.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
[tony@atomide.com: updated wit information about the breaking commit]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-07 12:38:07 -08:00
Greg Kroah-Hartman
351a102dbf ARM: drivers: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:04 -08:00
Tony Lindgren
2cd1f483b8 Some OMAP PRCM and sparse fixes against v3.8-rc1. A basic set of test
logs are available here:
 
     http://www.pwsan.com/omap/testlogs/prcm_fixes_b_3.8-rc/20130102120724/
 
 The 3730 Beagle XM here has an intermittent failure mounting SD root,
 but the suspicion right now is that this is due to a failing SD card,
 rather than any change introduced by these patches.
 
 This second version includes a few changes requested by Tony Lindgren.
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Merge tag 'omap-fixes-a2-for-v3.8-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.8-rc2/fixes

Some OMAP PRCM and sparse fixes against v3.8-rc1.  A basic set of test
logs are available here:

    http://www.pwsan.com/omap/testlogs/prcm_fixes_b_3.8-rc/20130102120724/

The 3730 Beagle XM here has an intermittent failure mounting SD root,
but the suspicion right now is that this is due to a failing SD card,
rather than any change introduced by these patches.

This second version includes a few changes requested by Tony Lindgren.
2013-01-03 11:04:21 -08:00
Paul Walmsley
7e7fff8254 ARM: OMAP2/3: PRM: fix bogus OMAP2xxx powerstate return values
On OMAP2xxx chips, the register bitfields for the
PM_PWSTCTRL_*.POWERSTATE and PM_PWSTST_*.LASTSTATEENTERED are
different than those used on OMAP3/4.  The order is reversed.  So, for
example, on OMAP2xxx, 0x0 indicates 'ON'; but on OMAP3/4, 0x0
indicates 'OFF'.  Similarly, on OMAP2xxx, 0x3 indicates 'OFF', but on
OMAP3/4, 0x3 indicates 'ON'.

To fix this, we treat the OMAP3/4 values as the powerdomain API
values, and create new low-level powerdomain functions for the
OMAP2xxx chips which translate between the OMAP2xxx values and the
OMAP3/4 values.

Without this patch, the conversion of the OMAP2xxx PM code to the
functional powerstate code results in a non-booting kernel.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Jon Hunter
cfef4b2723 ARM: OMAP3: clock data: Add missing enable/disable for EMU clock
The ETM/ETB drivers for OMAP3, enable the emu_src_ck clock in order
to access the ETM/ETB hardware. The emu_src_ck should enable the EMU
clock domain so that the ETM/ETB hardware is accessible. However,
currently when enabling the emu_src_ck the EMU clock domain is not
being enabled and so the ETM/ETB drivers are failing. Add enable/disable
clock functions to enable the EMU clock domain when enabling the
emu_src_ck.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Ivan Khoronzhuk
d7eccab909 ARM: OMAP4: PRM: Correct wrong instance usage for reading reset sources
To read reset sources registers we have to use PRM_DEVICE_INST

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Nishanth Menon
5f2596fc72 ARM: OMAP4: PRM: fix RSTTIME and RSTST offsets
RSTTIME is offset 0x8 and RSTST is offset 0x04 for OMAP4430 and
OMAP4460.

Signed-off-by: Nishanth Menon <nm@ti.com>
[ivan.khoronzhuk@ti.com: ported from k3.4]
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Ivan Khoronzhuk
62bafd1a8f ARM: OMAP4: PRM: Correct reset source map
In the map for reset sources register we use defines intended for
using with PRM_RSTCTRL register. So fix it.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Paul Walmsley
9816aa80b0 ARM: OMAP AM33xx: hwmod data: resolve sparse warnings
Commit 70384a6af0 ("ARM: OMAP3+:
hwmod: Add AM33XX HWMOD data for davinci_mdio module") adds two
new sparse warnings:

arch/arm/mach-omap2/omap_hwmod_33xx_data.c:2518:30: warning: symbol 'am33xx_mdio_addr_space' was not declared. Should it be static?
arch/arm/mach-omap2/omap_hwmod_33xx_data.c:2526:26: warning: symbol 'am33xx_cpgmac0__mdio' was not declared. Should it be static?

Fix by marking the two new records as static.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mugunthan V N <mugunthanvnm@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Peter Korsgaard <jacmet@sunsite.dk>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
2013-01-01 15:41:59 -07:00
Linus Torvalds
8d91a42e54 ARM: arm-soc: late cleanups for omap
From Tony Lindgren:
 Here are few more patches to finish the omap changes for
 multiplatform conversion that are not strictly fixes, but
 were too complex to do with the dependencies during the
 merge window. Those are to move of serial-omap.h to
 platform_data, and the removal of remaining cpu_is_omap
 macro usage outside mach-omap2.
 
 Then there are several trivial fixes for typos and few
 minimal omap2plus_defconfig updates.
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Merge tag 'omap-late-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull late ARM cleanups for omap from Olof Johansson:
 "From Tony Lindgren:

  Here are few more patches to finish the omap changes for multiplatform
  conversion that are not strictly fixes, but were too complex to do
  with the dependencies during the merge window.  Those are to move of
  serial-omap.h to platform_data, and the removal of remaining
  cpu_is_omap macro usage outside mach-omap2.

  Then there are several trivial fixes for typos and few minimal
  omap2plus_defconfig updates."

* tag 'omap-late-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arch/arm/mach-omap2/dpll3xxx.c: drop if around WARN_ON
  OMAP2: Fix a typo - replace regist with register.
  ARM/omap: use module_platform_driver macro
  ARM: OMAP2+: PMU: Remove unused header
  ARM: OMAP4: remove duplicated include from omap_hwmod_44xx_data.c
  ARM: OMAP2+: omap2plus_defconfig: enable twl4030 SoC audio
  ARM: OMAP2+: omap2plus_defconfig: Add tps65217 support
  ARM: OMAP2+: enable devtmpfs and devtmpfs automount
  ARM: OMAP2+: omap_twl: Change TWL4030_MODULE_PM_RECEIVER to TWL_MODULE_PM_RECEIVER
  ARM: OMAP2+: Drop plat/cpu.h for omap2plus
  ARM: OMAP: Split fb.c to remove last remaining cpu_is_omap usage
  MAINTAINERS: Add an entry for omap related .dts files
2012-12-30 09:59:21 -08:00
Linus Torvalds
f3dc1294c8 ARM: arm-soc fixes for 3.8, part 2
Here are a few more fixes for 3.8. Two branches of fixes for Samsung
 platforms, including fixes for the audio build errors on all non-DT
 platforms. There's also a fixup to the sunxi device-tree file renames
 due to a bad patch application by me, and a fix for OMAP due to function
 renames merged through the powerpc tree.
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Merge tag 'fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes part 2 from Olof Johansson:
 "Here are a few more fixes for 3.8.  Two branches of fixes for Samsung
  platforms, including fixes for the audio build errors on all non-DT
  platforms.  There's also a fixup to the sunxi device-tree file renames
  due to a bad patch application by me, and a fix for OMAP due to
  function renames merged through the powerpc tree."

* tag 'fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: OMAP2+: Fix compillation error in mach-omap2/timer.c
  ARM: sunxi: rename device tree source files
  ARM: EXYNOS: Avoid passing the clks through platform data
  ARM: S5PV210: Avoid passing the clks through platform data
  ARM: S5P64X0: Add I2S clkdev support
  ARM: S5PC100: Add I2S clkdev support
  ARM: S3C64XX: Add I2S clkdev support
  ARM: EXYNOS: Fix MSHC clocks instance names
  ARM: EXYNOS: Fix NULL pointer dereference bug in SMDKV310
  ARM: EXYNOS: Fix NULL pointer dereference bug in SMDK4X12
  ARM: EXYNOS: Fix NULL pointer dereference bug in Origen
  ARM: SAMSUNG: Add missing include guard to gpio-core.h
  pinctrl: exynos5440/samsung: Staticize pcfgs
  pinctrl: samsung: Fix a typo in pinctrl-samsung.h
  ARM: EXYNOS: fix skip scu_enable() for EXYNOS5440
  ARM: EXYNOS: fix GIC using for EXYNOS5440
  ARM: EXYNOS: fix build error when MFC is not selected
2012-12-20 17:55:34 -08:00
Tony Lindgren
6f8c9d2130 ARM: OMAP2+: Trivial fix for IOMMU merge issue
Commit 787314c35f ("Merge tag 'iommu-updates-v3.8' of
git://git./linux/kernel/git/joro/iommu") did not account for the changed
header location.

The headers were made local to mach-omap2 as they are specific to omap2+
only, and we wanted to get most of the #include <plat/*.h> headers fixed
up anyways for the ARM multiplatform support.

We attempted to avoid this kind of merge conflict early on by setting up
a minimal git branch shared by the arm-soc tree and the iommu tree, but
looks like we still hit a merge issue there as the branches got merged
as various topic branches.

Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-20 14:15:26 -08:00
Linus Torvalds
787314c35f IOMMU Updates for Linux v3.8
A few new features this merge-window. The most important one is
 probably, that dma-debug now warns if a dma-handle is not checked with
 dma_mapping_error by the device driver. This requires minor changes to
 some architectures which make use of dma-debug. Most of these changes
 have the respective Acks by the Arch-Maintainers.
 Besides that there are updates to the AMD IOMMU driver for refactor the
 IOMMU-Groups support and to make sure it does not trigger a hardware
 erratum.
 The OMAP changes (for which I pulled in a branch from Tony Lindgren's
 tree) have a conflict in linux-next with the arm-soc tree. The conflict
 is in the file arch/arm/mach-omap2/clock44xx_data.c which is deleted in
 the arm-soc tree. It is safe to delete the file too so solve the
 conflict. Similar changes are done in the arm-soc tree in the common
 clock framework migration. A missing hunk from the patch in the IOMMU
 tree will be submitted as a seperate patch when the merge-window is
 closed.
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Merge tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull IOMMU updates from Joerg Roedel:
 "A few new features this merge-window.  The most important one is
  probably, that dma-debug now warns if a dma-handle is not checked with
  dma_mapping_error by the device driver.  This requires minor changes
  to some architectures which make use of dma-debug.  Most of these
  changes have the respective Acks by the Arch-Maintainers.

  Besides that there are updates to the AMD IOMMU driver for refactor
  the IOMMU-Groups support and to make sure it does not trigger a
  hardware erratum.

  The OMAP changes (for which I pulled in a branch from Tony Lindgren's
  tree) have a conflict in linux-next with the arm-soc tree.  The
  conflict is in the file arch/arm/mach-omap2/clock44xx_data.c which is
  deleted in the arm-soc tree.  It is safe to delete the file too so
  solve the conflict.  Similar changes are done in the arm-soc tree in
  the common clock framework migration.  A missing hunk from the patch
  in the IOMMU tree will be submitted as a seperate patch when the
  merge-window is closed."

* tag 'iommu-updates-v3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (29 commits)
  ARM: dma-mapping: support debug_dma_mapping_error
  ARM: OMAP4: hwmod data: ipu and dsp to use parent clocks instead of leaf clocks
  iommu/omap: Adapt to runtime pm
  iommu/omap: Migrate to hwmod framework
  iommu/omap: Keep mmu enabled when requested
  iommu/omap: Remove redundant clock handling on ISR
  iommu/amd: Remove obsolete comment
  iommu/amd: Don't use 512GB pages
  iommu/tegra: smmu: Move bus_set_iommu after probe for multi arch
  iommu/tegra: gart: Move bus_set_iommu after probe for multi arch
  iommu/tegra: smmu: Remove unnecessary PTC/TLB flush all
  tile: dma_debug: add debug_dma_mapping_error support
  sh: dma_debug: add debug_dma_mapping_error support
  powerpc: dma_debug: add debug_dma_mapping_error support
  mips: dma_debug: add debug_dma_mapping_error support
  microblaze: dma-mapping: support debug_dma_mapping_error
  ia64: dma_debug: add debug_dma_mapping_error support
  c6x: dma_debug: add debug_dma_mapping_error support
  ARM64: dma_debug: add debug_dma_mapping_error support
  intel-iommu: Prevent devices with RMRRs from being placed into SI Domain
  ...
2012-12-20 10:07:25 -08:00
Peter Ujfalusi
2727da8595 ARM: OMAP2+: Fix compillation error in mach-omap2/timer.c
prom_add_property() has been renamed to of_add_property()
This patch fixes the following comilation error:

arch/arm/mach-omap2/timer.c: In function ‘omap_get_timer_dt’:
arch/arm/mach-omap2/timer.c:178:3: error: implicit declaration of function ‘prom_add_property’ [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[1]: *** [arch/arm/mach-omap2/timer.o] Error 1
make[1]: *** Waiting for unfinished jobs....

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-12-20 09:45:03 -08:00
Vaibhav Bedia
1800098549 ARM: OMAP: Fix build breakage due to missing include in i2c.c
Merge commit 752451f01c ("Merge branch 'i2c-embedded/for-next' of
git://git.pengutronix.de/git/wsa/linux") resulted in a build breakage
for OMAP

  arch/arm/mach-omap2/i2c.c: In function 'omap_pm_set_max_mpu_wakeup_lat_compat':
  arch/arm/mach-omap2/i2c.c:130:2: error: implicit declaration of function 'omap_pm_set_max_mpu_wakeup_lat'
  make[1]: *** [arch/arm/mach-omap2/i2c.o] Error 1

Fix this by including the appropriate header file with the function
prototype.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-20 08:43:25 -08:00
Linus Torvalds
1ffab3d413 ARM: arm-soc fixes for 3.8
This is a batch of fixes for arm-soc platforms, most of it is for OMAP
 but there are others too (i.MX, Tegra, ep93xx). Fixes warnings, some
 broken platforms and drivers, etc. A bit all over the map really.
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Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "This is a batch of fixes for arm-soc platforms, most of it is for OMAP
  but there are others too (i.MX, Tegra, ep93xx).  Fixes warnings, some
  broken platforms and drivers, etc.  A bit all over the map really."

There was some concern about commit 68136b10 ("RM: sunxi: Change device
tree naming scheme for sunxi"), but Tony says:
 "Looks like that's trivial to fix as needed, no need to rebuild the
  branch to fix that AFAIK.

  The fix can be done once Olof is available online again.

  Linus, I suggest that you go ahead and pull this if there are no other
  issues with this branch."

* tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (32 commits)
  ARM: sunxi: Change device tree naming scheme for sunxi
  ARM: ux500: fix missing include
  ARM: u300: delete custom pin hog code
  ARM: davinci: fix build break due to missing include
  ARM: exynos: Fix warning due to missing 'inline' in stub
  ARM: imx: Move platform-mx2-emma to arch/arm/mach-imx/devices
  ARM i.MX51 clock: Fix regression since enabling MIPI/HSP clocks
  ARM: dts: mx27: Fix the AIPI bus for FEC
  ARM: OMAP2+: common: remove use of vram
  ARM: OMAP3/4: cpuidle: fix sparse and checkpatch warnings
  ARM: OMAP4: clock data: DPLLs are missing bypass clocks in their parent lists
  ARM: OMAP4: clock data: div_iva_hs_clk is a power-of-two divider
  ARM: OMAP4: Fix EMU clock domain always on
  ARM: OMAP4460: Workaround ABE DPLL failing to turn-on
  ARM: OMAP4: Enhance support for DPLLs with 4X multiplier
  ARM: OMAP4: Add function table for non-M4X dplls
  ARM: OMAP4: Update timer clock aliases
  ARM: OMAP: Move plat/omap-serial.h to include/linux/platform_data/serial-omap.h
  ARM: dts: Add build target for omap4-panda-a4
  ARM: dts: OMAP2420: Correct H4 board memory size
  ...
2012-12-20 07:21:54 -08:00
Linus Torvalds
5031a2a7c1 In part2:
- A small patch for the RX51 OMAP board (Nokia N900 phone), the patch
   creates a battery monitor device instance, so that it can be probed. It
   was acked by the OMAP maintainer;
 
 - A couple of late bug fixes for the charger-manager: corrects corner
   cases for the battery full handling.
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Merge tag 'for-v3.8-part2' of git://git.infradead.org/battery-2.6

Pull battery update, part 2, from Anton Vorontsov:
 "These are left overs that I didn't have time to review/apply before
  the merge window opened.  I didn't want to "spoil" the first pull
  request with these late patches, so they were not included:

   - A small patch for the RX51 OMAP board (Nokia N900 phone), the patch
     creates a battery monitor device instance, so that it can be
     probed.  It was acked by the OMAP maintainer;

   - A couple of late bug fixes for the charger-manager: corrects corner
     cases for the battery full handling."

* tag 'for-v3.8-part2' of git://git.infradead.org/battery-2.6:
  charger-manager: Fix bug when check dropped voltage after fullbatt event
  charger-manager: Fix bug related to checking fully charged state of battery
  ARM: OMAP: rx51: Register platform device for rx51_battery
2012-12-19 08:14:08 -08:00
Linus Torvalds
752451f01c Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux
Pull i2c-embedded changes from Wolfram Sang:
 - CBUS driver (an I2C variant)
 - continued rework of the omap driver
 - s3c2410 gets lots of fixes and gains pinctrl support
 - at91 gains DMA support
 - the GPIO muxer gains devicetree probing
 - typical fixes and additions all over

* 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux: (45 commits)
  i2c: omap: Remove the OMAP_I2C_FLAG_RESET_REGS_POSTIDLE flag
  i2c: at91: add dma support
  i2c: at91: change struct members indentation
  i2c: at91: fix compilation warning
  i2c: mxs: Do not disable the I2C SMBus quick mode
  i2c: mxs: Handle i2c DMA failure properly
  i2c: s3c2410: Remove recently introduced performance overheads
  i2c: ocores: Move grlib set/get functions into #ifdef CONFIG_OF block
  i2c: s3c2410: Add fix for i2c suspend/resume
  i2c: s3c2410: Fix code to free gpios
  i2c: i2c-cbus-gpio: introduce driver
  i2c: ocores: Add support for the GRLIB port of the controller and use function pointers for getreg and setreg functions
  i2c: ocores: Add irq support for sparc
  i2c: omap: Move the remove constraint
  ARM: dts: cfa10049: Add the i2c muxer buses to the CFA-10049
  i2c: s3c2410: do not special case HDMIPHY stuck bus detection
  i2c: s3c2410: use exponential back off while polling for bus idle
  i2c: s3c2410: do not generate STOP for QUIRK_HDMIPHY
  i2c: s3c2410: grab adapter lock while changing i2c clock
  i2c: s3c2410: Add support for pinctrl
  ...
2012-12-18 16:51:10 -08:00
Olof Johansson
a93178a13d These patches fixes a build error caused by a merge
conflict with the fb code, few timer warnings, and longer
 term regressions for tfp410 and omap h4 ethernet. Also
 included is a GPIO mode fix for the legacy mux code.
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Merge tag 'omap-for-v3.8/fixes-for-merge-window-v4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:

These patches fixes a build error caused by a merge
conflict with the fb code, few timer warnings, and longer
term regressions for tfp410 and omap h4 ethernet. Also
included is a GPIO mode fix for the legacy mux code.

* tag 'omap-for-v3.8/fixes-for-merge-window-v4-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: common: remove use of vram
  ARM: OMAP: Move plat/omap-serial.h to include/linux/platform_data/serial-omap.h
  ARM: dts: Add build target for omap4-panda-a4
  ARM: dts: OMAP2420: Correct H4 board memory size
  mfd: omap-usb-host: get rid of cpu_is_omap..() macros
  ARM: OMAP: Remove debug-devices.c
  ARM: OMAP2420: Fix ethernet support for OMAP2420 H4
  OMAP2+: mux: Fixed gpio mux mode analysis
  OMAP: board-files: fix i2c_bus for tfp410
  ARM: OMAP2+: Fix sparse warnings in timer.c
  ARM: AM335x: Fix warning in timer.c
  ARM: OMAP2+: Fix realtime_counter_init warning in timer.c
2012-12-17 18:39:47 -08:00
Olof Johansson
10be289d07 Fix some OMAP4 clock problems, and deal with some sparse warnings from
the OMAP CPUIdle code.
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Merge tag 'omap-fixes-a-for-v3.8-window' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into fixes

From Paul Walmsley per Tony Lindgrens request:

Fix some OMAP4 clock problems, and deal with some sparse warnings from
the OMAP CPUIdle code.

* tag 'omap-fixes-a-for-v3.8-window' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending:
  ARM: OMAP3/4: cpuidle: fix sparse and checkpatch warnings
  ARM: OMAP4: clock data: DPLLs are missing bypass clocks in their parent lists
  ARM: OMAP4: clock data: div_iva_hs_clk is a power-of-two divider
  ARM: OMAP4: Fix EMU clock domain always on
  ARM: OMAP4460: Workaround ABE DPLL failing to turn-on
  ARM: OMAP4: Enhance support for DPLLs with 4X multiplier
  ARM: OMAP4: Add function table for non-M4X dplls
  ARM: OMAP4: Update timer clock aliases
2012-12-17 18:38:55 -08:00
Julia Lawall
f64d204b5c arch/arm/mach-omap2/dpll3xxx.c: drop if around WARN_ON
Just use WARN_ON rather than an if containing only WARN_ON(1).

A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@
- if (e) WARN_ON(1);
+ WARN_ON(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
YOSHIFUJI Hideaki
7eae44fa67 OMAP2: Fix a typo - replace regist with register.
Fix a typo - replace regist with register.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Jon Hunter
669bb47938 ARM: OMAP2+: PMU: Remove unused header
Commit 2ac29a1 (ARM: PMU: fix runtime PM enable) moved the call to
pm_runtime_enable() from the OMAP2+ PMU code into the ARM PERF core
code. However, header for pm_runtime which should have been removed
from the OMAP2+ PMU code was not. It is no longer necessary to include
this header in the OMAP2+ PMU code and so remove it.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Wei Yongjun
3550a7b213 ARM: OMAP4: remove duplicated include from omap_hwmod_44xx_data.c
Remove duplicated include.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Peter Ujfalusi
5f9403db5b ARM: OMAP2+: omap_twl: Change TWL4030_MODULE_PM_RECEIVER to TWL_MODULE_PM_RECEIVER
To facilitate upcoming cleanup in twl stack.
No functional change.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Tony Lindgren
e8d3d47a98 ARM: OMAP2+: Drop plat/cpu.h for omap2plus
The cpu_is_omap macros are now local to arch/arm/mach-omap2
in soc.h and plat/cpu.h can finally be dropped for omap2+.
Thanks everybody for help with fixing the drivers.

Note that we can now also remove the unused plat/cpu.h from
smartreflex.c and isp.c as they will cause compile errors
with ARCH_MULTIPLATFORM enabled.

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Jean Pihet <jean.pihet@newoldbits.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Tony Lindgren
16d60bb86e ARM: OMAP: Split fb.c to remove last remaining cpu_is_omap usage
Looks like we missed plat-omap/fb.c for cpu_is_omap usage
mach-omap2. This is the last user of cpu_is_omap, so let's
quickly fix it up so we can finally remove plat/cpu.h for
omap2lus.

We want to limit cpu_is_omap macro usage to mach-omap2 only so
we can make plat/cpu.h private. After this we can finally drop
plat/cpu.h for omap2+.

Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:40 -08:00
Pali Rohár
7605c0b0d3 ARM: OMAP: rx51: Register platform device for rx51_battery
This is needed to make the battery monitor actually work on Nokia N900.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
2012-12-16 22:32:38 -08:00
Tony Lindgren
2cb85a7bd2 Merge branch 'omap-for-v3.8/fixes-for-merge-window' into omap-for-v3.8/fixes-for-merge-window-v2 2012-12-16 11:28:10 -08:00
Javier Martinez Canillas
d7dde8c191 ARM: OMAP2+: common: remove use of vram
commit 966458f OMAP: remove vram allocator

Removed the OMAP specific vram allocator but OMAP2 common was
still trying to use it and this lead to the following build error:

CC      arch/arm/mach-omap2/common.o
arch/arm/mach-omap2/common.c:19:23: fatal error: plat/vram.h: No such file or directory
compilation terminated.
make[1]: *** [arch/arm/mach-omap2/common.o] Error 1
make: *** [arch/arm/mach-omap2] Error 2

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-16 11:19:48 -08:00
Linus Torvalds
2b8318881d fbdev changes for 3.8:
OMAPDSS changes, including:
 - use dynanic debug prints
 - OMAP platform dependency removals
 - Creation of compat-layer, helping us to improve omapdrm
 - Misc cleanups, aiming to make omadss more in line with the upcoming common
   display framework
 
 Exynos DP changes for the 3.8 merge window:
 - Device Tree support for Samsung Exynos DP
 - SW Link training is cleaned up.
 - HPD interrupt is supported.
 
 Samsung Framebuffer changes for the 3.8 merge window:
 - The bit definitions of header file are updated.
 - Some minor typos are fixed.
 - Some minor bugs of s3c_fb_check_var() are fixed.
 
 FB related changes for SH Mobile, Freescale DIU
 
 Add support for the Solomon SSD1307 OLED Controller
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Merge tag 'fbdev-for-3.8' of git://gitorious.org/linux-omap-dss2/linux

Pull fbdev changes from Tomi Valkeinen:
 "OMAPDSS changes, including:
   - use dynanic debug prints
   - OMAP platform dependency removals
   - Creation of compat-layer, helping us to improve omapdrm
   - Misc cleanups, aiming to make omadss more in line with the upcoming
     common display framework

  Exynos DP changes for the 3.8 merge window:
   - Device Tree support for Samsung Exynos DP
   - SW Link training is cleaned up.
   - HPD interrupt is supported.

  Samsung Framebuffer changes for the 3.8 merge window:
   - The bit definitions of header file are updated.
   - Some minor typos are fixed.
   - Some minor bugs of s3c_fb_check_var() are fixed.

  FB related changes for SH Mobile, Freescale DIU

  Add support for the Solomon SSD1307 OLED Controller"

* tag 'fbdev-for-3.8' of git://gitorious.org/linux-omap-dss2/linux: (191 commits)
  OMAPDSS: fix TV-out issue with DSI PLL
  Revert "OMAPFB: simplify locking"
  OMAPFB: remove silly loop in fb2display()
  OMAPFB: fix error handling in omapfb_find_best_mode()
  OMAPFB: use devm_kzalloc to allocate omapfb2_device
  OMAPDSS: DISPC: remove dispc fck uses
  OMAPDSS: DISPC: get dss clock rate from dss driver
  drivers/video/console/softcursor.c: remove redundant NULL check before kfree()
  drivers/video: add support for the Solomon SSD1307 OLED Controller
  OMAPDSS: use omapdss_compat_init() in other drivers
  OMAPDSS: export dispc functions
  OMAPDSS: export dss_feat functions
  OMAPDSS: export dss_mgr_ops functions
  OMAPDSS: separate compat files in the Makefile
  OMAPDSS: move display sysfs init to compat layer
  OMAPDSS: DPI: use dispc's check_timings
  OMAPDSS: DISPC: add dispc_ovl_check()
  OMAPDSS: move irq handling to dispc-compat
  OMAPDSS: move omap_dispc_wait_for_irq_interruptible_timeout to dispc-compat.c
  OMAPDSS: move blocking mgr enable/disable to compat layer
  ...

Conflicts:
	arch/arm/mach-davinci/devices-da8xx.c
	arch/arm/plat-omap/common.c
	drivers/media/platform/omap/omap_vout.c
2012-12-15 13:03:48 -08:00
Paul Walmsley
9db316b6bf ARM: OMAP3/4: cpuidle: fix sparse and checkpatch warnings
Fix the following sparse warnings in the OMAP3/4 CPUIdle code:

arch/arm/mach-omap2/cpuidle34xx.c:272:1: warning: symbol 'omap3_idle_dev' was not declared. Should it be static?
arch/arm/mach-omap2/cpuidle34xx.c:274:23: warning: symbol 'omap3_idle_driver' was not declared. Should it be static?
arch/arm/mach-omap2/cpuidle44xx.c:164:1: warning: symbol 'omap4_idle_dev' was not declared. Should it be static?
arch/arm/mach-omap2/cpuidle44xx.c:166:23: warning: symbol 'omap4_idle_driver' was not declared. Should it be static?

Also fix the following checkpatch warnings:

WARNING: please, no space before tabs
#44: FILE: arch/arm/mach-omap2/cpuidle34xx.c:105:
+^I.name = ^I"omap3_idle",$

WARNING: please, no space before tabs
#45: FILE: arch/arm/mach-omap2/cpuidle34xx.c:106:
+^I.owner = ^ITHIS_MODULE,$

ERROR: code indent should use tabs where possible
#211: FILE: arch/arm/mach-omap2/cpuidle44xx.c:74:
+                        /* C2 - CPU0 OFF + CPU1 OFF + MPU CSWR */$


Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-12-15 01:41:24 -07:00
Paul Walmsley
b8675e2c04 ARM: OMAP4: clock data: DPLLs are missing bypass clocks in their parent lists
Booting OMAP4460 Pandaboard ES with a recent u-boot results in this
warning:

WARNING: at arch/arm/mach-omap2/dpll3xxx.c:427 omap3_noncore_dpll_enable+0xf4/0x110()

The OMAP4 DPLL parent clock names only listed the reference clocks,
not the bypass clocks.  Fix by adding the bypass clocks to the DPLL
parent lists.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mike Turquette <mturquette@linaro.org>
2012-12-15 01:41:24 -07:00
Paul Walmsley
628a37d40e ARM: OMAP4: clock data: div_iva_hs_clk is a power-of-two divider
The OMAP4 clock divider "div_iva_hs_clk" is listed in the clock data
as an OMAP HSDIVIDER, but it's actually a power-of-two divider.  This
causes a warning during boot on an OMAP4460 Pandaboard-ES with a
recent u-boot:

WARNING: at arch/arm/mach-omap2/clkt_clksel.c:143 omap2_clksel_recalc+0xf4/0x12c()
clock: div_iva_hs_clk: could not find fieldval 0 for parent dpll_core_m5x2_ck

Fix by converting the data for this clock to a power-of-two divider.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Mike Turquette <mturquette@linaro.org>
2012-12-15 01:41:24 -07:00
Jon Hunter
29f0667f92 ARM: OMAP4: Fix EMU clock domain always on
Commit d043d87 (ARM: OMAP2+: clockdomain: bypass clockdomain handling
when disabling unused clks) skips the decrementing of a clock-domains
use count if the clocks use count is zero. However, for OMAP4 devices
this is causing the EMU clock-domain to be stuck ON as the use count is
not getting decremented correctly.

The scenario that leads to this problem is described below ...

omap_hwmod_setup_all
--> _setup
    --> clkdm_hwmod_enable
    	--> EMU clock domain usecount = 1
    --> _enable_clocks
        --> clk_enable
	    --> trace_clk_div_div usecount = 1
            --> clkdm_hwmod_enable
    	        --> EMU clock domain usecount = 2
--> _idle
    --> _disable_clocks
	--> clk_disable
            --> trace_clk_div_div usecount = 0
            --> clkdm_hwmod_disable
                --> skips decrement of EMU clock domain usecount
		    because trace_clk_div_div is 0!
    	        --> EMU clock domain usecount = 2
    --> clkdm_hwmod_disable
    	--> EMU clock domain usecount = 1

Hence, due to the order that a clocks use count is decremented and the
clock domain is disabled, it is possible that the clock domain can have
a non-zero use count when the actual clock has a use count of 0.
Therefore, we should only bypass the clock-domain handling when both the
clock-domain and clock in the clock-domain have a use count of 0 and
warn when the clock-domain has a zero use count and the clock has a
non-zero use count.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
[paul@pwsan.com: fixed checkpatch warning]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-12-15 01:35:54 -07:00
Jon Hunter
8c197ccfb6 ARM: OMAP4460: Workaround ABE DPLL failing to turn-on
With the latest mainline u-boot bootloader (v2012.10), timers (5-8) in
the ABE power domain are failing to turn-on. The timers never come out
of the disabled state when setting the module-mode field to enable.

The problem was exposed when u-boot was updated to NOT configure and
lock the ABE DPLL on start-up. If the ABE DPLL is configured and locked
by u-boot the problem does not occur. However, if the ABE DPLL is in the
idle low-power bypass state and we attempt to enable a timer in the ABE
power domain, it remains stuck in the disabled state. It appears to be a
problem the timer interface clock as this comes from the ABE DPLL.

If we place the ABE DPLL in the MN-bypass state and not the idle
low-power state, then this problem is not seen.

This problem only appears to occur on OMAP4460 and not OMAP4430.

Workaround this problem by locking the ABE DPLL for OMAP4460 in the
kernel on boot. By locking the ABE DPLL, when clocks from the ABE DPLL
are not being requested the DPLL will transition into a low-power stop
mode.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-12-15 01:35:50 -07:00