18737 Commits

Author SHA1 Message Date
Jyri Sarha
c873d14d30 clk: add gpio gated clock
The added gpio-gate-clock is a basic clock that can be enabled and
disabled trough a gpio output. The DT binding document for the clock
is also added. For EPROBE_DEFER handling the registering of the clock
has to be delayed until of_clk_get() call time.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-09-26 16:51:42 -07:00
Mike Turquette
b6b2fe5b6e Tegra clk updates for 3.18
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Merge tag 'tegra-clk-3.18' of git://nv-tegra.nvidia.com/user/pdeschrijver/linux into clk-next

Tegra clk updates for 3.18
2014-09-26 16:09:39 -07:00
Alexei Starovoitov
51580e798c bpf: verifier (add docs)
this patch adds all of eBPF verfier documentation and empty bpf_check()

The end goal for the verifier is to statically check safety of the program.

Verifier will catch:
- loops
- out of range jumps
- unreachable instructions
- invalid instructions
- uninitialized register access
- uninitialized stack access
- misaligned stack access
- out of range stack access
- invalid calling convention

More details in Documentation/networking/filter.txt

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 15:05:14 -04:00
Alexei Starovoitov
99c55f7d47 bpf: introduce BPF syscall and maps
BPF syscall is a multiplexor for a range of different operations on eBPF.
This patch introduces syscall with single command to create a map.
Next patch adds commands to access maps.

'maps' is a generic storage of different types for sharing data between kernel
and userspace.

Userspace example:
/* this syscall wrapper creates a map with given type and attributes
 * and returns map_fd on success.
 * use close(map_fd) to delete the map
 */
int bpf_create_map(enum bpf_map_type map_type, int key_size,
                   int value_size, int max_entries)
{
    union bpf_attr attr = {
        .map_type = map_type,
        .key_size = key_size,
        .value_size = value_size,
        .max_entries = max_entries
    };

    return bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
}

'union bpf_attr' is backwards compatible with future extensions.

More details in Documentation/networking/filter.txt and in manpage

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 15:05:14 -04:00
David Riley
371bb20d69 power: Add simple gpio-restart driver
This driver registers a restart handler to set a GPIO line high/low
to reset a board based on devicetree bindings.

Signed-off-by: David Riley <davidriley@chromium.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26 19:51:15 +02:00
Peter Chen
d22e913118 of: add vendor prefix for Chipidea
Adds chipidea to the list of DT vendor prefixes.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:19:11 -05:00
Thierry Reding
d8498205fa of: Add vendor prefix for Innolux Corporation
According to Wikipedia, Innolux started out in 2003 as InnoLux Display
Corporation and merged with Chi Mei Optoelectronics in 2006. It went by
the name of Chimei Innolux Corporation for a while and changed its name
back to Innolux Corporation in late 2012.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:19:10 -05:00
Geert Uytterhoeven
fbc0806c7a of: Add vendor prefix for Sitronix
The stock ticker for Sitronix is just a number.
"sitronix,st1232" is already in use for the Sitronix st1232 touchscreen
controller on Atmark Techno Armadillo 800 EVA.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:19:10 -05:00
Tim Harvey
3d2bff03cb devicetree: bindings: Document Gateworks vendor prefix
Add Gateworks Corporation to the list of device tree vendor prefixes.

Gateworks designs and manufactures single board computers designed for
embedded wireless and wired network applications.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:19:10 -05:00
Uwe Kleine-König
f7fd786621 of: Add vendor prefix for Energy Micro
The kernel supports devices with the following compatible strings
already:

	energymicro,efm32-i2c
	energymicro,efm32-uart
	energymicro,efm32-spi
	energymicro,efm32-timer

So add "energymicro" to the list of vendors.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:19:09 -05:00
Santosh Shilimkar
0244f8f87e dt/documentation: add specification of dma bus information
Recently we introduced the generic device tree infrastructure for couple of DMA
bus parameter, dma-ranges and dma-coherent. Update the documentation so that
its useful for future users.

The "dma-ranges" property is intended to be used for describing the
configuration of DMA bus RAM addresses and its offset w.r.t CPU addresses.

The "dma-coherent" property is intended to be used for identifying devices
supported coherent DMA operations.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2014-09-26 11:18:05 -05:00
Lee Jones
b08fec2262 power: reset: st: Provide DT bindings for ST's Power Reset driver
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2014-09-26 17:37:37 +02:00
Linus Walleij
3f97d5fcf9 gpio: handle also nested irqchips in the chained handler set-up
To unify how we connect cascaded IRQ chips to parent IRQs, if
NULL us passed as handler to the gpiochip_set_chained_irqchip()
function, assume the chips is nested rather than chained, and
we still get the parent set up correctly by way of this function
call.

Alter the drivers for tc3589x and stmpe to use this to set up
their chained handlers as a demonstration of the usage.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-26 14:39:08 +02:00
Liu Hua
b2dd83b377 Documentation: correct parameter error for dma_mapping_error
dma_mapping_error takes two parameters, but some of examples
in Documentation/DMA-API-HOWTO.txt just takes one. So correct
it.

Signed-off-by: Liu Hua <sdu.liu@huawei.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:22:29 +02:00
Oscar Utbult
2d69049ab7 Documentation: change "&" to "and" in Documentation/applying-patches.txt
http://english.stackexchange.com/questions/3127/when-to-use-instead-of-and

Signed-off-by: Oscar Utbult <oscar@oscr.io>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:10:11 +02:00
Peter Foley
e043271b6a Documentation: remove networking/.gitignore
Remove empty networking/.gitignore

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Cc: rdunlap@infradead.org
Cc: linux-doc@vger.kernel.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:03:02 +02:00
Mark Rutland
dd42a0882a Docs: this_cpu_ops: remove redundant add forms
Commit ac490f4dca94 (Documentation: this_cpu_ops.txt: Update description
of this_cpu_ops) added lists of {__,}this_cpu operations, but these have
duplicate, parameter-less entries for {__,}this_cpu_add which don't
correspond to any implementation. No other operations have such
duplicate entries.

Given both are also listed with their full complement of arguments, the
empty forms are redundant and can be removed. This patch performs said
removal.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
Acked-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:03:00 +02:00
Peter Foley
25b91ac204 Documentation: disable vdso_test to avoid breakage with old glibc
glibc versions older than 2.16 don't include sys/auxv.h which this
executable uses.
Since we don't have a good way to test for specific glibc versions in
kbuild, just disable it for now.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:03:00 +02:00
Peter Foley
15565829e7 Documentation: update vDSO makefile to build portable examples
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:03:00 +02:00
Peter Foley
c5e2a7e012 Documentation: update .gitignore files
Add some missing files to .gitignore.
Push Documentation/.gitignore down into subdirectories.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:59 +02:00
Peter Foley
8c2b0dc83d Documentation: support glibc versions without htole macros
glibc 2.9 introduced the htole<16/32/64> macros, add them to
tools/include to support older versions of glibc.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:58 +02:00
Mark Brown
19f94f9700 v4l2-pci-skeleton: Only build if PCI is available
Currently arm64 does not support PCI but it does support v4l2. Since the
PCI skeleton driver is built unconditionally as a module with no dependency
on PCI this causes build failures for arm64 allmodconfig. Fix this by
defining a symbol VIDEO_PCI_SKELETON for the skeleton and conditionalising
the build on that.

Signed-off-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org> [added VIDEO dependencies]
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:58 +02:00
Peter Foley
6ab0e475f1 Documentation: fix misc. warnings
Fix a few warnings that gcc emits during a default build.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:57 +02:00
Peter Foley
0421fc837c Documentation: make functions static to avoid prototype warnings
Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:56 +02:00
Peter Foley
adb19fb66e Documentation: add makefiles for more targets
Add a bunch of previously unbuilt source files to the Documentation build
machinery.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:56 +02:00
Peter Foley
df68a01014 Documentation: use subdir-y to avoid unnecessary built-in.o files
Change the Documentation makefiles from obj-m to subdir-y
to avoid generating unnecessary built-in.o files since nothing
in Documentation/ is ever linked in to vmlinux.

Signed-off-by: Peter Foley <pefoley2@pefoley.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26 11:02:55 +02:00
Mika Westerberg
6ab3430129 mfd: Add ACPI support
If an MFD device is backed by ACPI namespace, we should allow subdevice
drivers to access their corresponding ACPI companion devices through normal
means (e.g using ACPI_COMPANION()).

This patch adds such support to the MFD core. If the MFD parent device
does not specify any ACPI _HID/_CID for the child device, the child
device will share the parent ACPI companion device. Otherwise the child
device will be assigned with the corresponding ACPI companion, if found
in the namespace below the parent.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:24:05 +01:00
Lee Jones
92b8f3abb8 mfd: dt-bindings: atmel-gpbr: Rename doc file to conform to naming convention
Cc: boris.brezillon@free-electrons.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:24:03 +01:00
Lee Jones
937064bd90 mfd: dt-bindings: qcom-pm8xxx: Rename doc file to conform to naming convention
Cc: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:24:02 +01:00
Stanimir Varbanov
ab27c44754 mfd: Document DT bindings for Qualcomm SPMI PMICs
Document DT bindings used to describe the Qualcomm SPMI PMICs.

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:24:00 +01:00
Stanimir Varbanov
a5669e4872 mfd: dt-bindings: pm8xxx: Add new compatible string
The rtc driver now supports PM8941 PMIC device, reflect this
in the binding document.

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:23:59 +01:00
Nishanth Menon
b64c6887f4 mfd: dt-bindings: twl4030-power: Use the standard property to mark power control
ti,system-power-controller is more or less the standard way of
indicating that the PMIC is the system wide power controller and hence
may be used to switch off the system. Almost ALL TI PMIC drivers and
many Maxim PMIC drivers follow the same style.

So support 'ti,system-power-controller' in addition to the usual
'ti,use_poweroff' to indicate that the PMIC instance has control for
switching off the system.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:23:57 +01:00
Boris BREZILLON
c896e68ec1 mfd: syscon: Add Atmel GPBR DT bindings documention
The GPBR block provides a set of battery-backed registers that can be used
to save data which need to be kept when the system is powered down and
VDD-core is maintained by an external battery.

A typical usage is the RTT block (when used as an RTC) which needs one of
those registers to save the current time.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:23:56 +01:00
Sean Cross
0bf1f0cda1 mfd: stmpe: Document DT binding for irq_over_gpio
STMPE now supports using a GPIO as an IRQ source.  Document the device
tree binding for this option.

Signed-off-by: Sean Cross <xobs@kosagi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:23:54 +01:00
Guodong Xu
0709b048ce mfd: dt-bindings: Add Device Tree bindings for HI6421
Add documentation for HiSilicon Hi6421 PMIC DT binding.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:59 +01:00
Chris Zhong
a53b9a97ac mfd: dt-bindings: Add RK808 device tree bindings document
Add device tree bindings documentation and a header file
for rockchip's RK808 pmic.

Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Zhang Qing <zhangqing@rock-chips.com>
Tested-by: Heiko <heiko@sntech.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:55 +01:00
Inha Song
dc5193cc4a mfd: arizona: Update DT binding to support INn_MODE init_data
This patch update DT binding to support INn_MODE init_data. Each
input signal path can be configurated either as a Analogue or
Digital using the INn_MODE registers.

Signed-off-by: Inha Song <ideal.song@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:53 +01:00
Beniamino Galvani
a654f81640 mfd: rn5t618: Document device tree bindings
This adds the device tree bindings documentation for Ricoh RN5T618.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-26 08:15:50 +01:00
Lee Jones
0608bab8c7 Merge branches 'ib-mfd-arm-3.18', 'ib-mfd-hwmon-leds-watchdog-3.18' and 'ib-mfd-power-charger-regulator-3.18' into ibs-for-mfd-merged 2014-09-26 08:14:30 +01:00
Beniamino Galvani
318fd4909d net: stmmac: meson: document device tree bindings
Add the device tree bindings documentation for the Amlogic Meson
variant of the Synopsys DesignWare MAC.

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-09-26 00:12:56 -04:00
Linus Walleij
741c798a02 leds: add device tree bindings for register bit LEDs
This adds the device tree bindings used by register bit LEDs.

Cc: devicetree@vger.kernel.org
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-26 00:27:19 +02:00
Arnd Bergmann
6d50424a39 Second SoC batch for 3.18:
- introduction of the new SAMA5D4 SoC and associated Evaluation Kit
 - low level soc detection and early printk code
 - taking advantage of this, documentation of all AT91 SoC DT strings
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Merge tag 'at91-soc2' of git://github.com/at91linux/linux-at91 into next/soc

Pull "Second SoC batch for 3.18" from Nicolas Ferre:

- introduction of the new SAMA5D4 SoC and associated Evaluation Kit
- low level soc detection and early printk code
- taking advantage of this, documentation of all AT91 SoC DT strings

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'at91-soc2' of git://github.com/at91linux/linux-at91:
  ARM: at91: document Atmel SMART compatibles
  ARM: at91: add sama5d4 support to sama5_defconfig
  ARM: at91: dt: add device tree file for SAMA5D4ek board
  ARM: at91: dt: add device tree file for SAMA5D4 SoC
  ARM: at91: SAMA5D4 SoC detection code and low level routines
  ARM: at91: introduce basic SAMA5D4 support
  clk: at91: add a driver for the h32mx clock
2014-09-26 00:15:09 +02:00
Arnd Bergmann
cd95427481 Few hwmod changes to support upcoming 8250 driver with DMA,
start using the SRAM driver for some omaps, and update the
 defconfig.
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Merge tag 'soc-part2-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Pull "part 2 of omap SoC changes" from Tony Lindgren:

Few hwmod changes to support upcoming 8250 driver with DMA,
start using the SRAM driver for some omaps, and update the
defconfig.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'soc-part2-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4+: Remove static iotable mappings for SRAM
  ARM: OMAP4+: Move SRAM data to DT
  ARM: AM335x: Get rid of unused sram init function
  ARM: omap2plus_defconfig: Enable some display features
  ARM: omap2plus_defconfig: Enable battery and reset drivers
  ARM: omap2plus_defconfig: Add support for distros with systemd
  ARM: omap2plus_defconfig: Add cpufreq to defconfig
  ARM: omap2plus_defconfig: Shrink with savedefconfig
  ARM: OMAP3: Use manual idle for UARTs because of DMA errata
  ARM: OMAP2+: Add hwmod flag for HWMOD_RECONFIG_IO_CHAIN
2014-09-26 00:00:02 +02:00
Arnd Bergmann
e1e85e76ef Merge tag 'bcm63138-v4' of http://github.com/brcm/linux into next/soc
Merge "ARM: BCM: Broadcom BCM63138 support" from Florian Fainelli:

This patchset adds very minimal support for the BCM63138 SoC which is
a xDSL SoC using a dual Cortex A9 CPU complex.

* tag 'bcm63138-v4' of http://github.com/brcm/linux:
  MAINTAINERS: add entry for the Broadcom BCM63xx ARM SoCs
  ARM: BCM63XX: add BCM963138DVT Reference platform DTS
  ARM: BCM63XX: add BCM63138 minimal Device Tree
  ARM: BCM63XX: add low-level UART debug support
  ARM: BCM63XX: add basic support for the Broadcom BCM63138 DSL SoC

Conflicts:
	arch/arm/Kconfig.debug

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-09-25 23:50:02 +02:00
Rafael J. Wysocki
7961bb7226 PM / AVS changes for v3.18
- Add new driver for Rockchip IO voltage domains
 - update MAINTAINERS to reflect maintenance of drivers/power/avs/*
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Merge tag 'avs-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux into pm-avs

Pull AVS changes for v3.18 from Kevin Hilman:

- Add new driver for Rockchip IO voltage domains
- update MAINTAINERS to reflect maintenance of drivers/power/avs/*

* tag 'avs-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux:
  MAINTAINERS: update entry for drivers/power/avs
  PM / AVS: rockchip-io: add driver handling Rockchip io domains
2014-09-25 22:16:09 +02:00
Heiko Stübner
662a958638 PM / AVS: rockchip-io: add driver handling Rockchip io domains
IO domain voltages on some Rockchip SoCs are variable but need to be
kept in sync between the regulators and the SoC using a special
register.

A specific example using rk3288:
- If the regulator hooked up to a pin like SDMMC0_VDD is 3.3V then
  bit 7 of GRF_IO_VSEL needs to be 0.  If the regulator hooked up to
  that same pin is 1.8V then bit 7 of GRF_IO_VSEL needs to be 1.

Said another way, this driver simply handles keeping bits in the SoC's
general register file (GRF) in sync with the actual value of a voltage
hooked up to the pins.

Note that this driver specifically doesn't include:
- any logic for deciding what voltage we should set regulators to
- any logic for deciding whether regulators (or internal SoC blocks)
  should have power or not have power

If there were some other software that had the smarts of making
decisions about regulators, it would work in conjunction with this
driver.  When that other software adjusted a regulator's voltage then
this driver would handle telling the SoC about it.  A good example is
vqmmc for SD.  In that case the dw_mmc driver simply is told about a
regulator.  It changes the regulator between 3.3V and 1.8V at the
right time.  This driver notices the change and makes sure that the
SoC is on the same page.

Signed-off-by: Heiko Stübner <heiko@sntech.de>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[khilman: fix compiler warnings]
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-09-25 09:57:23 -07:00
Arnd Bergmann
8a87f1a6c8 Allwinner drivers additions for 3.18
Nothing major, just handling the RTC driver changes needed for the A31/A23.
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Merge tag 'sunxi-drivers-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/drivers

Pull "Allwinner drivers additions for 3.18" from Maxime Ripard:

Nothing major, just handling the RTC driver changes needed for the A31/A23.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'sunxi-drivers-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
  rtc: sun6i: Add sun6i RTC driver
2014-09-25 18:15:34 +02:00
Arnd Bergmann
45c636b46e Fifth Round of Renesas ARM Based SoC DT Updates for v3.18
* Document manufacturer for KZM boards
 * Use SoC-specific irqc compatible property
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Merge tag 'renesas-dt5-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt

Pull "Fifth Round of Renesas ARM Based SoC DT Updates for v3.18" from Simon Horman:

* Document manufacturer for KZM boards
* Use SoC-specific irqc compatible property

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'renesas-dt5-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: Add manufacturer for KZM boards
  ARM: shmobile: r8a73a4 dtsi: Add SoC-specific irqc compatible property
2014-09-25 18:08:56 +02:00
Arnd Bergmann
14b62fb015 ARM: tegra: core SoC code changes for 3.18
the primary change here gets its address information from DT rather than
 iomap.h. This removes one more user of iomap.h, and will help allow the
 code to move to a location that can be shared between arch/arm and
 arch/arm64.
 
 An unused header file was also removed.
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Merge tag 'tegra-for-3.18-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/soc

Pull "ARM: tegra: core SoC code changes for 3.18" from Stephen Warren:

the primary change here gets its address information from DT rather than
iomap.h. This removes one more user of iomap.h, and will help allow the
code to move to a location that can be shared between arch/arm and
arch/arm64.

An unused header file was also removed.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'tegra-for-3.18-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
  ARM: tegra: remove unused tegra_emc.h
  ARM: tegra: Initialize flow controller from DT
  of: Add NVIDIA Tegra flow controller bindings
2014-09-25 17:53:39 +02:00
Arnd Bergmann
e36087998a arm: Xilinx Zynq cleanup patches for v3.18
- PM support
 - Fix L2 useless setting
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Merge tag 'zynq-cleanup-for-3.18' of git://git.xilinx.com/linux-xlnx into next/soc

Pull "arm: Xilinx Zynq cleanup patches for v3.18" from Michal Simek:

- PM support
- Fix L2 useless setting

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'zynq-cleanup-for-3.18' of git://git.xilinx.com/linux-xlnx:
  ARM: zynq: Remove useless L2C AUX setting
  ARM: zynq: Rename 'zynq_platform_cpu_die'
  ARM: zynq: Remove hotplug.c
  ARM: zynq: Synchronise zynq_cpu_die/kill
  ARM: zynq: cpuidle: Remove pointless code
  ARM: zynq: Remove invalidate cache for cpu die
  ARM: zynq: PM: Enable DDR clock stop
  ARM: zynq: DT: Add DDRC node
  Documentation: devicetree: Add binding for Synopsys DDR controller
  ARM: zynq: PM: Enable A9 internal clock gating feature
2014-09-25 17:42:57 +02:00