This has mostly been about introducing A80 support
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Merge tag 'sunxi-core-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/soc
Pull "Allwinner Core Additions for 3.19" from Maxime Ripard:
This has mostly been about introducing A80 support
* tag 'sunxi-core-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: sunxi: make sun6i SMP ops static
ARM: sunxi: Select ARCH_HAS_RESET_CONTROLLER and RESET_CONTROLLER for sun9i
Documentation: sunxi: Add A80 datasheet link
devicetree: bindings: Document supported Allwinner sunxi SoCs
ARM: sunxi: Introduce Allwinner A80 support
devicetree: bindings: Add vendor prefix for Merrii Technology Co., Ltd.
ARM: sunxi: Add debug uart used by sun9i (Allwinner A80)
Documentation: sunxi: Update Allwinner SoC documentation (A31/A31s/A23)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull "ARM: meson: SOC related changes" from Carlo Caione:
This is the pull request for the SoC related changes for the 3.19.
The support for Meson8 is added together with L2 cache management.
* tag 'v3.19-meson-soc' of https://github.com/carlocaione/linux-meson:
clocksource: meson6: Select CLKSRC_MMIO
ARM: meson: enable L2 cache
ARM: meson: document meson8 compatible properties
ARM: meson: add meson8 support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'v3.19-rockchip-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/soc
Pull "code part of the rk3288 smp support" from Heiko Stübner:
here is the second batch of soc related changes, consisting only
of the smp support for rk3288.
Due to the slight misheap of the v3.18 cpuclk pull being merge, it is based
on exactly this merge commit from Olof to next/soc.
* tag 'v3.19-rockchip-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: rockchip: add basic smp support for rk3288
ARM: rockchip: add option to access the pmu via a phandle in smp_operations
ARM: rockchip: convert to regmap and use pmu syscon if available
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
top of the multiplatform patches, this moves out
some drivers and reduced the amount of code carried
in arch/arm/mach-integrator.
- Move the Integrator/AP timer to drivers/clocksource
- Move the restart functionality to the device tree,
patches to enable restart for the Integrator have
been merged to the reset tree (orthogonal)
- Move debug LEDs to device tree (using the syscon
LED driver merged for v3.18)
- Move core module LEDs to device tree (using the
syscon LED driver merged for v3.18)
- Move the SoC driver (chip ID etc) to
drivers/soc/versatile/soc-integrator.c
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Merge tag 'integrator-v3.19-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/soc
Pull "ARM SoC Integrator updates for v3.19" from Linus Walleij:
Integrator updates for the v3.19 merge cycle on
top of the multiplatform patches, this moves out
some drivers and reduced the amount of code carried
in arch/arm/mach-integrator.
- Move the Integrator/AP timer to drivers/clocksource
- Move the restart functionality to the device tree,
patches to enable restart for the Integrator have
been merged to the reset tree (orthogonal)
- Move debug LEDs to device tree (using the syscon
LED driver merged for v3.18)
- Move core module LEDs to device tree (using the
syscon LED driver merged for v3.18)
- Move the SoC driver (chip ID etc) to
drivers/soc/versatile/soc-integrator.c
* tag 'integrator-v3.19-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
soc: move SoC driver for the ARM Integrator
ARM: integrator: move core module LED to device tree
ARM: integrator: move debug LEDs to syscon LED driver
ARM: integrator: move restart to the device tree
ARM: integrator: move AP timer to clocksource
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Use WFI when putting CPU1 to sleep. Don't hold CPU1 in reset
since that results in increased power consumption.
Reset CPU1 briefly during CPU1 bootup.
This has been tested for hotplug and suspend/resume and results
in no increased power consumption.
Signed-off-by: Alan Tull <atull@opensource.altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'v3.19-next-soc' of https://github.com/mbgg/linux-mediatek into next/soc
Pull "Add earlyprintk to mt8127 and mt8135 and update Kconfig entry for
Mediatek SoCs" from Matthias Brugger:
Here comes the pull request which add earlyprintk support for mt8127 and mt8135.
Apart from that the Kconfig entry for the Mediatek architecture was fixed.
* tag 'v3.19-next-soc' of https://github.com/mbgg/linux-mediatek:
ARM: mediatek: Fix description for mediatek SoCs
ARM: mediatek: Add earlyprintk support for mt8127 & mt8135
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull "Broadcom Cygnus SoC defconfig" from Florian Fainelli:
This pull requests removes one level in menuconfig for the BCM SoCs for the
bcm_defconfig file.
* tag 'arm-soc/for-3.19/cygnus-defconfig-v2' of http://github.com/brcm/linux:
ARM: bcm_defconfig: remove one level of menu from Kconfig
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull "Broadcom Cygnus SoC platform support" from Florian Fainelli:
This pull request contains the platform code to support the Broadcom Cygnus SoC
using the iProc architecture:
- add support for the Broadcom Cygnus SoC
- consolidate the BCM5301X Kconfig options under the iProc menuconfig entry
- remove one level of menu in menuconfig
* tag 'arm-soc/for-3.19/cygnus-platform-v2' of http://github.com/brcm/linux:
ARM: mach-bcm: ARCH_BCM_MOBILE: remove one level of menu from Kconfig
ARM: mach-bcm: Consolidate currently supported IPROC SoCs
ARM: cygnus: Initial support for Broadcom Cygnus SoC
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
StrongARM debug-macro.S is quite standalone thing, depending only on
register mappings. Move it to proper place and add Kconfig entry.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tero Kristo to move things a bit closer to becoming a proper
device driver.
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Merge tag 'omap-for-v3.19/prcm-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
Pull "omap prcm clean-up for v3.19" from Tony Lindgren:
Clean-up series for omap PRCM (Power Reset Clock Module) from
Tero Kristo to move things a bit closer to becoming a proper
device driver.
* tag 'omap-for-v3.19/prcm-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (26 commits)
ARM: OMAP2+: PRM: provide generic API for system reset
ARM: OMAP3+: PRM: add generic API for reconfiguring I/O chain
ARM: OMAP4: PRM: make PRCM interrupt handler related functions static
ARM: OMAP3: PRM: make PRCM interrupt handler related functions static
ARM: OMAP4: PRM: make omap4_prm_read/write_inst_reg calls static
ARM: AM33xx: PRM: make direct register access functions static
ARM: AM33xx: PRM: move global warm reset implementation to driver
ARM: OMAP4+: CM: remove omap4_cm1/cm2_* functions
ARM: OMAP4: CM: make cminst direct register access functions static
ARM: OMAP4: CM: move public definitions from cminst44xx.h to cm44xx.h
ARM: OMAP2+: PRM: add generic API for checking hardreset status
ARM: OMAP2+: PRM: add generic API for deasserting hardware reset
ARM: OMAP2+: PRM: add generic API for asserting hardware reset
ARM: AM33xx: PRM: add support for prm_init
ARM: AM43xx: hwmod: use OMAP4 hardreset ops instead of the AM33xx version
ARM: AM33xx: hwmod: remove am33xx specific module SoC opts
ARM: OMAP2/3: CM: make cm_split_idlest_reg SoC calls static
ARM: OMAP2+: CM: add common APIs for cm_module_enable/disable
ARM: OMAP2+: CM: make clkdm_hwsup operations static
ARM: OMAP4+/AM33xx: CM: add common API for cm_wait_module_idle
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
omap4 and later, and to fix clock DPLL fixes by adding determine_rate
and set_rate_and_parent.
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Merge tag 'omap-for-v3.19/clocks-and-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc
Pull "omap soc changes for v3.19" from Tony Lindgren:
SoC related changes for omaps. Mostly to make PM easier to use for
omap4 and later, and to fix clock DPLL fixes by adding determine_rate
and set_rate_and_parent.
* tag 'omap-for-v3.19/clocks-and-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: hwmod: drop unnecessary list initialization
ARM: OMAP3+: DPLL: use determine_rate() and set_rate_and_parent()
ARM: OMAP3: clock: add support for dpll4_set_rate_and_parent
ARM: OMAP4: clock: add support for determine_rate for omap4 regm4xen DPLL
ARM: OMAP3: clock: add new rate changing logic support for noncore DPLLs
ARM: OMAP3: clock: use clk_features flags for omap3 DPLL4 checks
ARM: OMAP4+: PM: Program CPU logic power state
ARM: OMAP4+: PM: Centralize static dependency mapping table
ARM: OMAP4: PM: Only do static dependency configuration in omap4_init_static_deps
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Hello Arnd, Kevin, Olof,
This is a very quiet release, featuring a small cleanup, a tosa change
on its charger driver, and support for pxa device-tree based pxa27x
boards.
The device-tree part will only be fully activated once clocks support
is fully operation in the common clock framework.
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Merge tag 'pxa-for-3.19' of https://github.com/rjarzmik/linux into next/soc
Pull "arm: pxa: pxa for v3.19" from Robert Jarzmik:
This is a very quiet release, featuring a small cleanup, a tosa change
on its charger driver, and support for pxa device-tree based pxa27x
boards.
The device-tree part will only be fully activated once clocks support
is fully operation in the common clock framework.
* tag 'pxa-for-3.19' of https://github.com/rjarzmik/linux:
arm: pxa: add pxa27x device-tree support
arm: pxa: remove unnecessary includes from pxa-dt
arm: pxa: move init functions into generic.h
arm: pxa: add device-tree irq init for pxa27x
ARM: pxa: tosa: switch to gpio-charger
arm: mach-pxa: Convert pr_warning to pr_warn
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add a device-tree machine entry (DT_MACHINE_START) for pxa27x based
platforms.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
As the init functions necessary for machine init have moved to
generic.h, remove the unnecessary includes and prototypes definitions
from pxa-dt.c.
This removes the include of mach/pxaXXX-regs.h, and make pxa-dt generic
enough to accept other pxa variants.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
In order to have a unique .c file for all pxa variants device-tree
definitions, all the initialization functions for MACHINE_START and
DT_MACHINE_START have been put together into generic.h.
The alternative would have been one pxaXXX-dt.c file per variant.
The move is necessary because each include/mach/pxaXXX.h includes the
variant register descriptions which intersects and conflicts one with
each other.
The change is a preparation for pxa-dt.c to support multiple pxa,
ie. pxa3xx and pxa27x.
The machine files including mach/pxaXXX.h all include generic.h, which
guarantees no regression should be introduced.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Add the initializer for irqs in a device-tree machine on a pxa27x.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Switch to simpler gpio-charger module. PDA power requires additional
setup in platform file and is more suited for boards with separate AC
and USB charging inputs. Tosa has a unified input, so it's better suited
for gpio-charger.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Use the more common pr_warn.
Other miscellanea:
o Coalesce formats
o Realign arguments
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
* Enable PCI domains for R-Car Gen2 devices
* Make APMU resource code SoC-specific
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Merge tag 'renesas-soc2-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
Pull "Second Round of Renesas ARM Based SoC Soc Updates for v3.19" from Simon Horman:
* Enable PCI domains for R-Car Gen2 devices
* Make APMU resource code SoC-specific
* tag 'renesas-soc2-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Enable PCI domains for R-Car Gen2 devices
ARM: shmobile: r8a7791: Correct number of CPU cores
ARM: shmobile: Separate APMU resource data into CPU dependant part
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* Select CONFIG_ZONE_DMA when CONFIG_ARM_LPAE is enabled
* Add CA7 arch_timer initialization for r8a7794
* Handle CA7 arch timer delay
* Add shmobile_init_late() to sh7372
- This is consistent with other shmobile SoCs
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Merge tag 'renesas-soc-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
Pull "Renesas ARM Based SoC Soc Updates for v3.19" from Simon Horman:
* Select CONFIG_ZONE_DMA when CONFIG_ARM_LPAE is enabled
* Add CA7 arch_timer initialization for r8a7794
* Handle CA7 arch timer delay
* Add shmobile_init_late() to sh7372
- This is consistent with other shmobile SoCs
* tag 'renesas-soc-for-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Select CONFIG_ZONE_DMA when CONFIG_ARM_LPAE is enabled
ARM: shmobile: rcar-gen2: Add CA7 arch_timer initialization for r8a7794
ARM: shmobile: sh7372: Add shmobile_init_late()
ARM: shmobile: Handle CA7 arch timer delay
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Select CLKSRC_MMIO when the meson6_timer driver is enabled since it
depends on clocksource MMIO functions.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: Carlo Caione <carlo@caione.org>
This enables the L2 cache controller available in Amlogic SoCs.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Carlo Caione <carlo@caione.org>
Add a MACH_MESON8 symbol and add "amlogic,meson8" to the list of
compatible strings for the Meson DT machine to support devices based
on the Meson8 family of SoCs.
Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Carlo Caione <carlo@caione.org>
The sun6i SMP ops are currently not marked as static, as reported by
sparse. Let's mark it as such.
Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Most of the patches are clock-related. The DPLL implementation is
changed to better align to the common clock framework.
There is also a patch that removes a few lines from the hwmod code -
this patch should have no functional effect.
Basic build, boot, and PM test logs for these patches can be found here:
http://www.pwsan.com/omap/testlogs/omap-a-for-v3.19/20141113094101/
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Merge tag 'for-v3.19/omap-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.19/soc
Some OMAP clock/hwmod patches for v3.19.
Most of the patches are clock-related. The DPLL implementation is
changed to better align to the common clock framework.
There is also a patch that removes a few lines from the hwmod code -
this patch should have no functional effect.
Basic build, boot, and PM test logs for these patches can be found here:
http://www.pwsan.com/omap/testlogs/omap-a-for-v3.19/20141113094101/
We support more MediaTek SoCs now, update the description.
Signed-off-by: Joe.C <yingjoe.chen@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
ml->node and sl->node are currently initialized
by means of INIT_LIST_HEAD(). That initialiation
is followed by a list_add() call.
Looking at what both these functions do we will have:
ml->node.next = &ml->node;
ml->node.prev = &ml->node;
oi->master->master_ports.next.prev = &ml->node;
ml->node.next = &oi->master->master_ports.next;
ml->node.prev = &oi->master->master_ports;
oi->master->master_ports.next = &ml->node;
from this, it's clear that both INIT_LIST_HEAD() calls
are unnecessary and can be safely removed.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Currently, DPLLs are hiding the gory details of switching parent
within set_rate, which confuses the common clock code and is wrong.
Fixed by applying the new determine_rate() and set_rate_and_parent()
functionality to any clock-ops previously using the broken approach.
This patch also removes the broken legacy code.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Expand the support of omap4 per-dpll to provide set_rate_and_parent.
This is required for proper behavior of clk_change_rate with
determine_rate support.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Similarly to OMAP3 noncore DPLL, the implementation of this DPLL clock
type is wrong. This patch adds basic functionality for determine_rate
for this clock type which will be taken into use in the patches following
later.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Currently, DPLL code hides the re-parenting within its internals, which
is wrong. This needs to be exposed to the common clock code via
determine_rate and set_rate_and_parent APIs. This patch adds support
for these, which will be taken into use in the following patches.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
DPLL4 can't be reprogrammed on OMAP3430 ES1.0 due to hardware limitation.
Currently, the code does runtime omap_rev() check to see the chip it is
being executed on, instead, change this to use clk_features flags.
This avoids need for runtime omap_rev() checks.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This creates a new SoC bus driver for the ARM Integrator
family core modules to register the SoC bus and provide
sysfs info for the core module. We delete the corresponding
code from the Integrator machine and select this driver to
get a clean result.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This gets rid of the custom LED driver in the Integrator directory
altogether and switches us over to using the syscon LEDs for this.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The Integrator debug block is a simple set of registers, make
it a syscon and register the four LEDs on the Integrator/AP
baseboard as syscon LEDs.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Using the augmented reset driver for the Versatile family,
we can move the reset handling for the Integrator out of the
machine. We add a "syscon" attribute to the core module, and
access the syscon registers using this handle. We need to
select SYSCON, POWER, POWER_RESET and POWER_RESET_VERSATILE
in order for the restart functionality to always be
available on all systems (it should not be optional).
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
In a combined ARMv6/v7 kernel, the setup-rcar-gen2.c cannot
currently be compiled correctly because it uses the isb
instruction that is not available on ARMv6. Adding the
-march=armv7-a flag lets the compiler know that it is safe
to build this file for ARMv7.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
remove menu "Broadcom Mobile SoC Selection"
This requires:
- selecting ARCH_BCM_MOBILE based on SoC selections
- fixup bcm_defconfig to work with new menu levels.
- multi_v7_defconfig in another patch for merge purposes as per
Olof Johansson's request
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
remove menu "Broadcom Mobile SoC Selection"
This requires:
- selecting ARCH_BCM_MOBILE based on SoC selections
- fixup bcm_defconfig and multi_v7_defconfig to work with new menu levels.
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Move ARCH_BCM_5301X subarch under ARCH_IPROC architecture.
Additional IPROC chipsets that share a lot of commonality should be
added under ARCH_IPROC as well.
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Adds initial support for the Cygnus SoC based on Broadcom’s iProc series.
Reviewed-by: Ray Jui <rjui@broadcom.com>
Reviewed-by: Desmond Liu <desmondl@broadcom.com>
Reviewed-by: JD (Jiandong) Zheng <jdzheng@broadcom.com>
Tested-by: Jonathan Richardson <jonathar@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Port the sh73a0 restart handling from the kzm9g-legacy board code to the
generic sh73a0 code.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Commit 68f3b875f7848f5304472184a4634148c5330cbd
"ARM: integrator: make the Integrator multiplatform"
broke allmodconfig like this:
>> arch/arm/include/asm/cmpxchg.h:114:2: error: #error
"SMP is not supported on this platform"
(etc)
This is due to the fact that as we turned on multiplatform
for the Integrator, this enabled a lot of non-applicable
CPU's to be selected for its multiplatform images, due to
a lot of "depends on ARCH_INTEGRATOR" restrictions in
arch/arm/mm/Kconfig for the different ARM CPU types.
Fix this by restricting the CPU selections to respective
multiplatform config, which now becomes a subset of the
possible Integrator configurations, or alternatively the
non-multiplatform config plus ARCH_INTEGRATOR, i.e.:
if (!ARCH_MULTIPLATFORM || ARCH_MULTI_Vx) &&
(ARCH_INTEGRATOR || ARCH_FOO ...)
Since the Integrator has been converted to multiplatform,
this will often take the short form:
if (ARCH_MULTI_Vx && ARCH_INTEGRATOR)
If no other non-multiplatform platforms are elegible.
Reported-by: Build bot for Mark Brown <broonie@kernel.org>
Reported-by: Kbuild test robot <fengguang.wu@intel.com>
Suggested-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
CPU logic power state is never programmed in either the initialization
or the suspend/resume logic, instead, we depend on mpuss to program this
properly. However, this leaves CPU logic power state indeterminate and
most probably in reset configuration (If bootloader or other similar
software have'nt monkeyed with the register). This can make powerstate=
RET be either programmed for CSWR (logic=ret) or OSWR(logic = OFF) and
in OSWR, there can be context loss when the code does not expect it.
To prevent all these confusions, just support clearly ON, INA, CSWR,
OFF which is the intent of the existing code by explicitly programming
logic state.
NOTE: since this is a hot path (using in cpuidle), the exit path just
programs powerstate (logic state is immaterial when powerstate is ON).
Without doing this, we end up with lockups when CPUs enter OSWR and
multiple blocks loose context, when we expect them to hit CSWR.
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
As we add more static dependency mapping for various errata, the logic
gets clunkier. Since it is a simple lookup and map logic, centralize the
same and provide the mapping as a simple list.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
