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29375 commits

Author SHA1 Message Date
Keerthy c56a831ca4 ARM: dts: DRA7: Add TPS659038 PMIC nodes
Add DT nodes for TPS659038 PMIC on DRA7 boards.

It is based on top of:
http://comments.gmane.org/gmane.linux.ports.arm.omap/102459.

Documentation:
- Documentation/devicetree/bindings/mfd/palmas.txt
- Documentation/devicetree/bindings/regulator/palmas-pmic.txt

Boot Tested on DRA7 d1 Board.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
[bcousson@baylibre.com: Fix indentation and changelog]
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:33 +02:00
Aaro Koskinen 6283513b6e ARM: dts: omap3-devkit8000: fix a typo in GMPC node
"gpmc,sync-clki-ps" is not defined/documented, it should be
"gpmc,sync-clk-ps" instead.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:33 +02:00
Javier Martinez Canillas e0efaafbb5 ARM: dts: AM33XX: don't redefine OCP bus and device nodes
The On Chip Peripherals (OCP) device node is a simplified
representation of the AM33XX SoC interconnect. An OCP dev
node is already defined in the am33xx.dtsi Device Tree
source file included by am33xx based boards so there is
no need to redefine this on each board DT file.

Also, the OCP and IP modules directly connected to it are SoC
internal details that is better to keep outside of board files.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:32 +02:00
Javier Martinez Canillas 82d75afcb7 ARM: dts: AM33XX: use pinmux node defined in included file
am33xx boards DTS include the am33xx.dtsi Device Tree
source file that already define a pinmux device node for
the AM33XX SoC Pin Multiplex.

Redefining this for each board makes the Device Tree files
harder to modify and maintain so let's just use what is
already defined in the included .dtsi file.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:32 +02:00
Koen Kooi ec8a75979f ARM: dts: am335x-bone-common: add cpu0 and mmc1 triggers
This matches the vendor 3.8.x configuration that is shipping
with the boards.

The LED layout is now:
 USR0: heartbeat
 USR1: mmc0 (micro-SD slot)
 USR2: cpu0
 USR3: mmc1 (eMMC)

The cpu0 triggers was put in between the mmc triggers to make
is easier to see where the disk activity is.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:31 +02:00
Koen Kooi 757a90e66c ARM: dts: am335x-bone-common: switch mmc1 to 4-bit mode
The micro-SD slot hooks up all four data pins so lets' use them.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:31 +02:00
Koen Kooi 1aac4a9903 ARM: dts: am335x-boneblack: add eMMC DT entry
The pinmux is specified in am335x-bone-common.dtsi to be
reused by the eMMC cape.

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
[bcousson@baylibre.com: Fix traling spaces and useless comments]
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:30 +02:00
Alexander Holler 3045ffffcf ARM: dts: am335x-bone: add CD for mmc1
This enables the use of MMC cards even when no card was inserted at boot.

Signed-off-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reviewed-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:30 +02:00
Matt Porter 55b4452b4b ARM: dts: AM33XX: Add MMC support and documentation
Adds AM33XX MMC support for am335x-bone, am335x-evm and am335x-evmsk boards.

Also added is the DMA binding definitions based on the generic DMA request
binding.

Additional changes made to DTS:
* Interrupt, reg and compatible properties added
* ti,needs-special-hs-handling added

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:29 +02:00
Matt Porter f5e2f807b7 ARM: dts: AM33XX: Add SPI DMA support
Adds DMA resources to the AM33XX SPI nodes.

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:29 +02:00
Matt Porter 505975d380 ARM: dts: AM33XX: Add EDMA support
Adds AM33XX EDMA support to the am33xx.dtsi as documented in
Documentation/devicetree/bindings/dma/ti-edma.txt

[Joel Fernandes <joelf@ti.com>]
Drop DT entries that are non-hardware-description as discussed in [1]

[1] https://patchwork.kernel.org/patch/2226761/

Signed-off-by: Matt Porter <mporter@ti.com>
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-11 21:06:28 +02:00
Felipe Balbi e3a412c9ee ARM: dts: OMAP5: add palmas-usb node
Without this node, there will be no palmas driver to notify
dwc3 that a cable has been connected and, without that, dwc3
will never initialize.

Signed-off-by: Felipe Balbi <balbi@ti.com>
[kishon@ti.com: added dt properties for enabling vbus/id interrupts
and fixed vbus-supply value after SMPS10 is modeled as 2 regulators]
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:42 +02:00
Roger Quadros 36f496ac70 ARM: dts: omap3-beagle: Make USB host pin naming consistent
Use a common naming scheme "mode0name.modename flags" for the
USB host pins to be consistent.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:42 +02:00
Marek Belisko adfe1473bd ARM: dts: Add devicetree for gta04 board.
This adds devicetree for gta04 (Openmoko next generation board) with necessary
support for mmc, usb, leds and button.

Signed-off-by: Marek Belisko <marek@goldelico.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:42 +02:00
Afzal Mohammed 7345601273 ARM: dts: AM4372: add few nodes
Populate uarts, timers, rtc, wdt, gpio, i2c, spi, cpsw & pwm nodes.

Reason for adding these nodes early - hwmod code required address
space of peripherals corresponding to these nodes (as address space
details are removed from hwmod database).

uart0, timers - 1 & 2 and synctimer were already present, so here the
remaining uarts & timers are added.

All properties as per the existing binding has been added for uart,
timer, rtc, wdt & gpio. Even though that was not the current scope
of work, felt adding those would reduce or require no effort later
to get these peripherals working.

For i2c, spi, cpsw & pwm - only the properties that were sure to be
correct has been added (main intention is to make hwmod happy and
avoid any later modification to here added properties).

While at it add "ti,hwmod" property to already existing nodes.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:42 +02:00
Afzal Mohammed 738c74090e ARM: dts: AM4372: cpu(s) node per latest binding
Update AM4372 cpu node to the latest cpus/cpu bindings for ARM.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
R Sricharan 6e58b8f1da ARM: dts: DRA7: Add the dts files for dra7 SoC and dra7-evm board
Add minimal device tree source needed for DRA7 based SoCs.
Also add a board dts file for the dra7-evm (based on dra752)
which contains 1.5G of memory with 1G interleaved and 512MB
non-interleaved. Also added in the board file are pin configuration
details for i2c, mcspi and uart devices on board.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Ruslan Bilovol 06a9ea5d76 ARM: dts: twl6030: Move common configuration for OMAP4 boards in a separate dtsi file
The OMAP4 SoC family uses specially-designed PMIC (power management IC)
companion chip for power management needs: TWL6030/TWL6032.
Therefore there is a typical connection of PMIC to OMAP4 so we can
move it into separate .dtsi file and do not duplicate over
board-specific files.

Tested on OMAP4 SDP board and Pandaboard ES2.

Signed-off-by: Ruslan Bilovol <ruslan.bilovol@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Lee Jones 8906d65499 ARM: dts: Remove '0x's from OMAP5 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Lee Jones 75d71d4610 ARM: dts: Remove '0x's from OMAP4 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Lee Jones ee8530b41b ARM: dts: Remove '0x's from OMAP3430 SDP DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Lee Jones b731777710 ARM: dts: Remove '0x's from OMAP3 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:41 +02:00
Lee Jones fa304a88e7 ARM: dts: Remove '0x's from OMAP3 IGEP0030 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:40 +02:00
Lee Jones 8771c9625b ARM: dts: Remove '0x's from OMAP3 IGEP0020 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:40 +02:00
Lee Jones f1d6ed2194 ARM: dts: Remove '0x's from OMAP2420 H4 DTS file
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:40 +02:00
Kishon Vijay Abraham I 9448996c09 ARM: dts: omap5-uevm: Split SMPS10 in two nodes
SMPS10 has two outputs OUT1 and OUT2. Hence SMPS10 is modeled as
two regulators. The DT node is split to reflect it.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:40 +02:00
Lars Poeschel 5eac0eb7af ARM: dts: AM33xx: Correct gpio #interrupt-cells property
Following commit ff5c9059 and therefore other omap platforms using
the gpio-omap driver correct the #interrupt-cells property on am33xx
too. The omap gpio binding documentaion also states that
the #interrupt-cells property should be 2.

Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Reviewed-by: Javier Martinez Canillas <javier@dowhile0.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:40 +02:00
Alexandre Belloni 6797cdbe14 ARM: dts: AM33XX: Add PMU support
ARM Performance Monitor Units are available on the am33xx,
add the support in the dtsi.

Tested with perf and oprofile on a regular beaglebone.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:39 +02:00
Javier Martinez Canillas 78132036da ARM: dts: omap3-igep0030: add mux conf for GPIO LED
The IGEP COM MOdule has a GPIO LED connected to OMAP
pins. Configure this pin as output GPIO.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:39 +02:00
Javier Martinez Canillas bd52e2d274 ARM: dts: omap3-igep0020: add mux conf for GPIO LEDs
The IGEPv2 has a number of GPIO LED connected to OMAP
pins. Configure these pins as output GPIO.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: Enric Balletbo i Serra <eballetbo@iseebcn.com>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:39 +02:00
Javier Martinez Canillas 00964a9072 ARM: dts: omap3-igep: add pinmux node for GPIO LED configuration
IGEP boards have a number of LED connected to OMAP or TWL GPIO
lines. The actual wiring is different on each board so each board
DT has need to configure the mux correctly.

Even though it works with the current DT, the kernel complains with:

[2.305023] leds-gpio leds.18: pins are not configured from the driver

Add an empty pinmux_leds_pins pinctrl child node so boards can
override with the correct mux configuration and not depend on
default values for the GPIO LEDs to work.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:39 +02:00
Pavel Machek a4d4b15363 ARM: dts: N900: Add device tree
This adds device tree with necessary support to boot with functional
video (on both emulator and real N900 device).

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
2013-10-08 17:51:39 +02:00
Linus Torvalds e6e7fb1ffc ARM: SoC fixes for 3.12-rc
We have a fairly large batch of fixes this time around, mostly just due to
 various platforms all having a fix or two more than usual.
 
 Worth pointing out are:
 
 - A fix for EDMA on Davinci/OMAP where channel allocation broke with
   the DT conversion. Due to some miscommunication we didn't
   understand the impact of the breakage, so we were pushing back on it
   for 3.12, but it sounds like it's actually breaking quite a few people
   out there.
 
 - A bunch of fixes for Marvell platforms, some straggling fixes for
   merge window fallout and some fixes for a couple of the platforms
   (Netgear RN102 in particular).
 
 - A fix for a race between multi-cluster power management and cpu hotplug
   on Versatile Express.
 
 And a bunch of other smaller fixes that all add up.
 
 We'll be switching over into stricter regressions-only mode from here
 on out.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "We have a fairly large batch of fixes this time around, mostly just
  due to various platforms all having a fix or two more than usual.

  Worth pointing out are:

   - A fix for EDMA on Davinci/OMAP where channel allocation broke with
     the DT conversion.  Due to some miscommunication we didn't
     understand the impact of the breakage, so we were pushing back on
     it for 3.12, but it sounds like it's actually breaking quite a few
     people out there.

   - A bunch of fixes for Marvell platforms, some straggling fixes for
     merge window fallout and some fixes for a couple of the platforms
     (Netgear RN102 in particular).

   - A fix for a race between multi-cluster power management and cpu
     hotplug on Versatile Express.

  And a bunch of other smaller fixes that all add up.

  We'll be switching over into stricter regressions-only mode from here
  on out"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (31 commits)
  ARM: multi_v7_defconfig: add SDHCI for i.MX
  bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
  ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102
  ARM: at91: sam9g45: shutdown ddr1 too when rebooting
  MAINTAINERS: ARM: SIRF: use kernel.org mail box
  MAINTAINERS: ARM: SIRF: add missed drivers into maintain list
  ARM: edma: Fix clearing of unused list for DT DMA resources
  ARM: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down
  ARM: dts: sirf: fix interrupt and dma prop of VIP for prima2 and atlas6
  ARM: dts: sirf: fix the ranges of peri-iobrg of prima2
  ARM: dts: makefile: build atlas6-evb.dtb for ARCH_ATLAS6
  ARM: dts: sirf: fix fifosize, clks, dma channels for UART
  ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver
  ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high
  ARM: mach-integrator: Add stub for pci_v3_early_init() for !CONFIG_PCI
  ARM: shmobile: Remove #gpio-ranges-cells DT property
  gpio: rcar: Remove #gpio-range-cells DT property usage
  ARM: shmobile: armadillo: fixup ether pinctrl naming
  ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup
  ARM: shmobile: update SDHI DT compatibility string to the <unit>-<soc> format
  ...
2013-10-02 21:48:32 -07:00
Olof Johansson 6a98b2ffc7 mvebu fixes for v3.12 (round 2)
- mvebu
     - fix ReadyNAS 102 power button (needs to be active high)
     - fix ReadyNAS 102 automated rebooting (prevent hang) by add gpio-poweroff
       node
     - fix booting ReadyNAS 102 by adding MBus ranges and PCIe DT nodes
     - mvebu-mbus: prevent PCIe driver from continuing with corrupted resource
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Merge tag 'fixes-3.12-2' of git://git.infradead.org/linux-mvebu into fixes

From Jason Cooper:
mvebu fixes for v3.12 (round 2)

 - mvebu
    - fix ReadyNAS 102 power button (needs to be active high)
    - fix ReadyNAS 102 automated rebooting (prevent hang) by add gpio-poweroff
      node
    - fix booting ReadyNAS 102 by adding MBus ranges and PCIe DT nodes
    - mvebu-mbus: prevent PCIe driver from continuing with corrupted resource

* tag 'fixes-3.12-2' of git://git.infradead.org/linux-mvebu:
  bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties
  ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102
  ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver
  ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-10-02 20:55:05 -07:00
Olof Johansson 4f76d37cdb ARM: multi_v7_defconfig: add SDHCI for i.MX
Turn on SDHCI for i.MX support so machines can boot with local rootfs
on SD. Tested on a Wandboard Quad.

Signed-off-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
2013-10-02 20:54:36 -07:00
Linus Torvalds 77c4ad8e23 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull two KVM fixes from Gleb Natapov.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: do not check bit 12 of EPT violation exit qualification when undefined
  ARM: kvm: rename cpu_reset to avoid name clash
2013-10-01 10:25:10 -07:00
Arnaud Ebalard b643f85814 ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102
When 5e12a613 and 0cd3754a were introduced, Netgear ReadyNAS 102 .dts
file was queued for inclusion and missed the update to have Mbus (and
then BootROM) ranges properties declared. It also missed the relocation
of Armada 370/XP PCIe DT nodes introduced by 14fd8ed0 after de1af8d4.
This patch fixes that which makes 3.12-rc3 bootable on the NAS.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-10-01 00:46:30 +00:00
Jean-Christophe PLAGNIOL-VILLARD bd737fea4e ARM: at91: sam9g45: shutdown ddr1 too when rebooting
Like we are doing on DDR0 we need to cleanly shutdown DDR1 if it is
used before rebooting.
If DDR1 is not initialized, we check it and avoid dereferencing its address.
Even by adding two more instructions, we are able to complete the procedure
within a single cache line.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:58:44 -07:00
Joel Fernandes 6cdaca481f ARM: edma: Fix clearing of unused list for DT DMA resources
HWMOD removal for MMC is breaking edma_start as the events are being manually
triggered due to unused channel list not being clear.

The above issue is fixed by reading the "dmas" property from the DT node if it
exists and clearing the bits in the unused channel list if the dma controller
used by any device is EDMA. For this purpose we use the of_* helpers to parse
the arguments in the dmas phandle list.

Also introduced is a minor clean up of a checkpatch error in old code.

Reviewed-by: Sekhar Nori <nsekhar@ti.com>
Reported-by: Balaji T K <balajitk@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Nishanth Menon <nm@ti.com>
Cc: Pantel Antoniou <panto@antoniou-consulting.com>
Cc: Jason Kridner <jkridner@beagleboard.org>
Cc: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:30:13 -07:00
Lorenzo Pieralisi 64270d82d4 ARM: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down
On the TC2 testchip, when all CPUs in a cluster enter standbywfi
and commit a power down request, the power controller will wait
for standbywfil2 coming from L2 cache controller to shut the
cluster down.
By the time all CPUs in a cluster commit a power down request
and enter wfi, the power controller cannot backtrack, or put it
another way, a CPU must not be allowed to complete execution
independently of the power controller, the only way for it to
resume properly must be upon wake-up IRQ pending and subsequent
reset triggered from the power controller.

Current MCPM back-end for TC2 disables the GIC CPU IF only when
power down is committed through the tc2_pm_suspend() method, that
makes sense since a suspended CPU is still online and can receive
interrupts whereas a hotplugged CPU, since it is offline,
migrated all IRQs and shutdown the per-CPU peripherals, hence
their PPIs.

The flaw with this reasoning is the following. If all CPUs in
a clusters are entering a power down state either through CPU
idle or CPU hotplug, when the last man successfully completes
the MCPM power down sequence (and executes wfi), power controller
waits for L2 wfi signal to quiesce the cluster and shut it down.
If, when all CPUs are sitting in wfi, an online CPU hotplugs back
in one of the CPUs in the cluster being shutdown, that CPU
receives an IPI that causes wfi to complete (since tc2_pm_down()
method does not disable the GIC CPU IF in that case - CPU being
hotplugged out, not idle) and the power controller will never see
the stanbywfil2 signal coming from L2 that is required for
shutdown to happen and the system deadlocks.

Further to this issue, kexec hotplugs secondary CPUs out during
kernel reload/restart.
Because kexec may (deliberately) trash the old kernel text, it is
not OK for CPUs to follow the MCPM soft reboot path, since
instructions after the WFI may have been replaced by kexec.

If tc2_pm_down() does not disable the GIC cpu interface, there is a
race between CPU powerdown in the old kernel and the IPI from the
new kernel that triggers secondary boot, particularly if the
powerdown is slow (due to L2 cache cleaning for example).  If the
new kernel wins the race, the affected CPU(s) will not really be
reset and may execute garbage after the WFI.

The only solution to this problem consists in disabling the GIC
CPU IF on a CPU committed to power down regardless of the power
down entry method (CPU hotplug or CPU idle). This way, CPU wake-up
is under power controller control, which prevents unexpected wfi
exit caused by a pending IRQ.

This patch moves the GIC CPU IF disable call in the TC2 MCPM
implementation from the tc2_pm_suspend() method to the
tc2_pm_down() method to fix the mentioned race condition(s).

Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Tested-by: Dave Martin <Dave.Martin@arm.com> (for kexec)
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:27:36 -07:00
Olof Johansson f1bb7cd5a1 Fourth Round of Renesas ARM based SoC fixes for v3.12
* Remove unused #gpio-ranges-cells DT property
 
 * Remove usage of deprecated #gpio-range-cells DT property
   from GPIO R-Car
 
   Property was deprecated in v3.11-rc2
 
 * Correct ether pinctl naming for armadillo800eva board
 
   Regression introduced in v3.10-rc5
 
 * Add Micrel KSZ8041 PHY fixup to lager board
 
   This resolves a problem that has been present since 3.11-rc2
 
 * Update SDHI DT compatibility string to the <unit>-<soc> format
 
   This makes compatibility strings consistent across all renesas
   hardware which currently supports DT.
 
   The bindings which are being updated where intorodiced on
   a per-SoC basis starting in v3.8-rc7. They may have
   been internally consistent when originally added.
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Merge tag 'renesas-fixes4-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

From Simon Horman:
Fourth Round of Renesas ARM based SoC fixes for v3.12

* Remove unused #gpio-ranges-cells DT property

* Remove usage of deprecated #gpio-range-cells DT property
  from GPIO R-Car

  Property was deprecated in v3.11-rc2

* Correct ether pinctl naming for armadillo800eva board

  Regression introduced in v3.10-rc5

* Add Micrel KSZ8041 PHY fixup to lager board

  This resolves a problem that has been present since 3.11-rc2

* Update SDHI DT compatibility string to the <unit>-<soc> format

  This makes compatibility strings consistent across all renesas
  hardware which currently supports DT.

  The bindings which are being updated where intorodiced on
  a per-SoC basis starting in v3.8-rc7. They may have
  been internally consistent when originally added.

* tag 'renesas-fixes4-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Remove #gpio-ranges-cells DT property
  gpio: rcar: Remove #gpio-range-cells DT property usage
  ARM: shmobile: armadillo: fixup ether pinctrl naming
  ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup
  ARM: shmobile: update SDHI DT compatibility string to the <unit>-<soc> format

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:24:20 -07:00
Renwei Wu 262bcc1d6f ARM: dts: sirf: fix interrupt and dma prop of VIP for prima2 and atlas6
the current dts is lacking interrupt and dma prop for video input
processor of prima2 and atlas6, this patch fixes it.

Signed-off-by: Renwei Wu <Renwei.Wu@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:17:49 -07:00
Barry Song 9e85b9d100 ARM: dts: sirf: fix the ranges of peri-iobrg of prima2
we lost an address range <0x56000000 0x56000000 0x1b00000> for peri-iobg
of prima2.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:17:49 -07:00
Barry Song 3349a4b901 ARM: dts: makefile: build atlas6-evb.dtb for ARCH_ATLAS6
Makefile missed to include atlas6-evb.dtb for ARCH_ATLAS6.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:17:48 -07:00
Qipan Li a136997841 ARM: dts: sirf: fix fifosize, clks, dma channels for UART
sirf uart and usp-based uart driver with full dma support has
hit 3.12, here we fix the fifosize, dma channels for some HW
prop.

Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-09-30 09:17:48 -07:00
Arnaud Ebalard 2832cf2558 ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver
Without that fix, at the end of the shutdown process, the board is
still powered (led glowing, fan running, ...).

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-09-30 14:09:45 +00:00
Arnaud Ebalard aa06a5adb9 ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high
NETGEAR ReadyNAS 102 Power button definition in .dts file flags
associated GPIO active low instead of active high. This results
in reversed events reported by input subsystem (0 returned when
the button is pressed, 1 when released). This patch makes
associated GPIO active high to recover correct behaviour.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2013-09-30 14:03:40 +00:00
Linus Torvalds 669fc2f0c7 Merge branches 'sched-urgent-for-linus', 'timers-urgent-for-linus' and 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler, timer and x86 fixes from Ingo Molnar:
 - A context tracking ARM build and functional fix
 - A handful of ARM clocksource/clockevent driver fixes
 - An AMD microcode patch level sysfs reporting fixlet

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arm: Fix build error with context tracking calls

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: em_sti: Set cpu_possible_mask to fix SMP broadcast
  clocksource: of: Respect device tree node status
  clocksource: exynos_mct: Set IRQ affinity when the CPU goes online
  arm: clocksource: mvebu: Use the main timer as clock source from DT

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Fix patch level reporting for family 15h
2013-09-28 14:22:17 -07:00
Linus Torvalds 874db4d800 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Just a few relatively small ARM fixes found since the last merge
  window, nothing too exciting"

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7837/3: fix Thumb-2 bug in AES assembler code
  ARM: only allow kernel mode neon with AEABI
  ARM: 7839/1: entry: fix tracing of ARM-private syscalls
  ARM: 7836/1: add __get_user_unaligned/__put_user_unaligned
2013-09-28 11:56:34 -07:00
Frederic Weisbecker 0c06a5d4b1 arm: Fix build error with context tracking calls
ad65782fba (context_tracking: Optimize main APIs off case
with static key) converted context tracking main APIs to inline
function and left ARM asm callers behind.

This can be easily fixed by making ARM calling the post static
keys context tracking function. We just need to replicate the
static key checks there. We'll remove these later when ARM will
support the context tracking static keys.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Anil Kumar <anilk4.v@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kevin Hilman <khilman@linaro.org>
2013-09-27 17:59:47 +02:00