Jack Ren and Eric Miao tracked down the following long standing
problem in the NOHZ code:
scheduler switch to idle task
enable interrupts
Window starts here
----> interrupt happens (does not set NEED_RESCHED)
irq_exit() stops the tick
----> interrupt happens (does set NEED_RESCHED)
return from schedule()
cpu_idle(): preempt_disable();
Window ends here
The interrupts can happen at any point inside the race window. The
first interrupt stops the tick, the second one causes the scheduler to
rerun and switch away from idle again and we end up with the tick
disabled.
The fact that it needs two interrupts where the first one does not set
NEED_RESCHED and the second one does made the bug obscure and extremly
hard to reproduce and analyse. Kudos to Jack and Eric.
Solution: Limit the NOHZ functionality to the idle loop to make sure
that we can not run into such a situation ever again.
cpu_idle()
{
preempt_disable();
while(1) {
tick_nohz_stop_sched_tick(1); <- tell NOHZ code that we
are in the idle loop
while (!need_resched())
halt();
tick_nohz_restart_sched_tick(); <- disables NOHZ mode
preempt_enable_no_resched();
schedule();
preempt_disable();
}
}
In hindsight we should have done this forever, but ...
/me grabs a large brown paperbag.
Debugged-by: Jack Ren <jack.ren@marvell.com>,
Debugged-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Any data being passed to s3c243xx_clock_register() can be
marked as __initdata as it is an array of pointers to
'struct clk' that are to be registered on initialisation.
The s3c243xx_clock_register function uses this array to
register clocks and does not require it to stay around
after exit.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (241 commits)
[ARM] 5171/1: ep93xx: fix compilation of modules using clocks
[ARM] 5133/2: at91sam9g20 defconfig file
[ARM] 5130/4: Support for the at91sam9g20
[ARM] 5160/1: IOP3XX: gpio/gpiolib support
[ARM] at91: Fix NAND FLASH timings for at91sam9x evaluation kits.
[ARM] 5084/1: zylonite: Register AC97 device
[ARM] 5085/2: PXA: Move AC97 over to the new central device declaration model
[ARM] 5120/1: pxa: correct platform driver names for PXA25x and PXA27x UDC drivers
[ARM] 5147/1: pxaficp_ir: drop pxa_gpio_mode calls, as pin setting
[ARM] 5145/1: PXA2xx: provide api to control IrDA pins state
[ARM] 5144/1: pxaficp_ir: cleanup includes
[ARM] pxa: remove pxa_set_cken()
[ARM] pxa: allow clk aliases
[ARM] Feroceon: don't disable BPU on boot
[ARM] Orion: LED support for HP mv2120
[ARM] Orion: add RD88F5181L-FXO support
[ARM] Orion: add RD88F5181L-GE support
[ARM] Orion: add Netgear WNR854T support
[ARM] s3c2410_defconfig: update for current build
[ARM] Acer n30: Minor style and indentation fixes.
...
This includes PXA work up to the SPI changes for the initial merge,
since e172274ccc depends on the SPI
tree being merged.
Conflicts:
arch/arm/configs/em_x270_defconfig
arch/arm/configs/xm_x270_defconfig
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It's not been updated in quite some time and we now have git for
history.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
pdev is used later on by dev_printk() so must be set.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Callers may stop the SSP core requesting the interrupt so it can't be
freed unconditionally. Also use NO_IRQ like we should.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This defconfig enables all currently available features. It also builds one
zImage which runs on all machines.
Signed-off-by: Antonio Ospite <ao2@openezx.org>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Common code for the different EZX GSM phones. Functions to control framebuffer,
backlight power, OHCI and UART init.
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds battery monitoring driver for PalmTX.
It can read voltage from the battery and temperature.
It also monitors charging/discharging status.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds PCMCIA support for PalmTX handheld computer.
There is one chip hard-soldered to slot0, another slot is
not in use and not accessible.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
PalmTX is PXA27x based device with wifi, bluetooth,
touchscreen, sdio slot, irda, keypad, nand flash,
pxa framebuffer, serial and usb gadget interface.
Supported by this patch is pxafb, touchscreen, irda,
keypad and sdio slot.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
at91sam9g20 defconfig file
Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Justin Waters <justin.waters@timesys.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Support for the at91sam9g20 : Atmel 400Mhz ARM 926ej-s SOC.
AT91sam9g20 is an evolution of the at91sam9260 with a faster clock
speed.
We created a new board for this device but based the chip support
directly on 9260 files with little updates.
Here is the chip page on Atmel wabsite:
http://atmel.com/dyn/products/product_card.asp?part_id=4337
Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com>
Signed-off-by: Justin Waters <justin.waters@timesys.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch uses the ability of PXA's clocklib to alias clock to resolve the
problem caused by sharing the SA1111 IO controller between PXA and SA1100
architectures, which have differing GPIO numbering.
Signed-off-by: Ian Molton <spyro@f2s.com>
This patch brings support for gpio/gpiolib framework to Intel IOP3xx
platforms.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
New timings are based on application note
"NAND Flash Support on AT91SAM9 Microcontrollers" available at
http://atmel.com/dyn/resources/prod_documents/doc6255.pdf).
Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The initial patch from Lothar, and Lennert make it into a cleaner
one, modified and tested on PXA320 by Eric Miao.
This patch moves the L2 cache operations out of proc-xsc3.S into
dedicated outer cache support code.
CACHE_XSC3L2 can be deselected so no L2 cache specific code will be
linked in, and that L2 enable bit will not be set, this applies to
the following cases:
a. _only_ PXA300/PXA310 support included and no L2 cache wanted
b. PXA320 support included, but want L2 be disabled
So the enabling of L2 depends on two things:
- CACHE_XSC3L2 is selected
- and L2 cache is present
Where the latter is only a safeguard (previous testing shows it works
OK even when this bit is turned on).
IXP series of processors with XScale3 cannot disable L2 cache for the
moment since they depend on the L2 cache for its coherent memory, so
IXP may always select CACHE_XSC3L2.
Other L2 relevant bits are always turned on (i.e. the original code
enclosed by #if L2_CACHE_ENABLED .. #endif), as they showed no side
effects. Specifically, these bits are:
- OC bits in TTBASE register (table walk outer cache attributes)
- LLR Outer Cache Attributes (OC) in Auxiliary Control Register
Signed-off-by: Lothar WaÃ<9f>mann <LW@KARO-electronics.de>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
And also reserve 32 IRQs for the two GPIO expanders.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Sergey Podstavin <spodstavin@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Sergey Podstavin <spodstavin@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
A pxa3xx_set_nand_info() is also introduced to set the PXA3xx NAND
driver specific platform_data structure pointer.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Sergey Podstavin <spodstavin@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
So processor specific clock sources can be defined in pxa300.c
and pxa320.c.
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Some boards want to change low power state of pins on-the-fly, this
function helps to facilitate that operation instead of switching
back-n-forth between two configurations with pxa2xx_mfp_config().
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
pxa320_init_mfp() is simple enough to be embedded into pxa320_init()
to simplify the code a bit.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Setting PKWR bits on those pins will make the resuming from
low power state to fail.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The correct macro name when a driver is built as a module is
CONFIG_*_MODULE instead of CONFIG_*_MODULES. This patch fixes
this in several places.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert CM-X270 pin configuration to use MFP tables.
Make device initialization dependent on respective driver CONFIG_ value (like
in zylonite).
Cleanup includes
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Convert EM-X270 pin configuration to use MFP tables and gpio library
Make device initialization dependent on respective driver CONFIG_ value (like
in zylonite)
Add keypad and gpio_key devices
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
There will always be only one pwm-backlight on this device.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It is only defined inside an "if ARCH_PXA ... endif" block, so the
depends on is not needed.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>?
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
These were only needed for hardcoded flash partition tables, which were
never submitted. It is better to have the bootloader pass the partition
table to the kernel instead.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The pin configuration array is only used during board init.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
pxa_gpio_mode() is deprecated, use the new pxa2xx_mfp_config() function to
configure GPIOs in pcm990 platform code. Convert "array, ARRAY_SIZE(array)"
to "ARRAY_AND_SIZE(array)" while at it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
unnecessary menu level
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a function to dynamically allocate and register pxa2xx-spi platform
devices, to be used by PXA2xx and PXA3xx based systems. Switch pcm027 and
lubbock to use it.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The Zylonite has an AC97 subsystem on it so register the AC97 controller
device.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
As well as moving all the device declarations to a single one in devices.c
this causes all platforms to register the I/O and interrupt resources for
the AC97 controller.
Cc: eric miao <eric.miao@marvell.com>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Jürgen Schindele <linux@schindele.name>
Cc: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The pxa2xx_udc.c driver is renamed to pxa25x_udc.c (the platform
driver name changes from pxa2xx-udc to pxa25x-udc) and the
platform driver name of pxa27x_udc.c is fixed to pxa27x-udc.
pxa_device_udc in devices.c is split into pxa25x and pxa27x flavors
and the pxa27x_device_udc is enabled in pxa27x.c.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Including from Ian Molton:
Fixes for mistakes left over from the PXA2{5,7}X UDC split.
Signed-off-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Provide a set of functions to control state of pins dedicated to IrDA.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
We need to support more than one name+device for a struct clk for a
small number of peripherals. We do this by re-using struct clk alias
to another struct clk - IOW, if we find that the entry we're using is
an alias, we return the aliased entry not the one we found.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On Feroceon platforms that have a branch prediction unit, bit 11 of the
cp15 control register controls the BPU. This patch keeps the old value
of this bit instead of always clearing it.
Signed-off-by: Saeed Bishara <saeed@marvell.com>
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
The HP mv2120 has several LEDs that are controlled through gpio.
Export the health LED, the red SATA LEDs as well as two gpios
that control the brightness of _all_ LEDs to userland. The
Ethernet and power LEDs can't be controlled through gpio and the
blue SATA LEDs are handled via the SATA driver.
Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This patch adds support for the Marvell Orion-VoIP RD-88F5181L-FXO
Reference Design, and enables use of the ethernet, USB, Cardbus and
mini-PCIe ports.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
This patch adds support for the Marvell Orion-VoIP RD2-88F5181L-GE
Reference Design, and enables use of the ethernet, USB, Cardbus and
mini-PCIe ports.
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Initialise the hardware register settings on boot, to allow the
device to function correctly.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This patch adds the configuration needed for the LCD display on the n30.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add support for the Acer N35 and related devices.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add support for the GPIO buttons on the Acer N30.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add support for the USB D+ pull up on the Acer N30. This is needed
for the USB gadget to work properly.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Clean up some junk from the official kernel.
The compile-command is something that's only useful for me personally
and doesn't belong in the mainstream kernel.
Signed-off-by: Christer Weinigel <christer@weinigel.se>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Update the S3C2443 clock support to add the prediv clock
that is sourced via a divider from msysclk. Also fix the
setting of p and h clocks from this prediv clock.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
s3c2443_clkcon_enable_p() was reading from the correct register
S3C2443_PCLKCON, but then writing the value back to the wrong
register S3C2443_HCLKCON.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add basic support for AT2440EVB board based on Samsung S3C2440 SoC.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Ramax Lo <ramaxlo@gmail.com>
Both i2c-pxa.c and irq.c still include pxa2xx-gpio.h although is is not
needed anymore.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The patch applies to the linux-next tree.
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The driver is pretty much generic and will be later shared with
a few other devices, like hx4700 ipaq.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add support for ac-in via pda_power device.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add definitions for Toshiba TC6393XB companion chip and register
the tc6393xb device.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
On tosa the tranciver LED isn't powered down if
the GPIO47 (STUART_TX) isn't configured as low-level.
Power it down if IrDA is off to save a bit of power.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This changes SD-related GPIO names to be more informative,
and allocates two more SD-related GPIOs.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Use new reset_gpio to reset tosa and spitz PDAs.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The RCSR definition was moved into pxa2xx-regs.h.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds support for resetting via assertion of GPIO pin.
This e.g. is used on Sharp Zaurus SL-6000.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds basic mach support for the mx2 processor family, based
on the original freescale code and adapted to mainline kernel coding
style.
This part adds the global build only.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
The Phytec phyCORE-i.MX27 CPU module is delivered with the PCM970
baseboard by default. This patch adds support for the hardware.
This code is only an empty stub; it is filled up with functionality
in a later patch series.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds support for the phyCORE-i.MX27 cpu module (aka pcm038).
It is as generic as possible in order to support any kind of baseboard.
Note: This CPU module implementation can't work without a baseboard
support. Baseboard support can be added by the PCM-970 (included in
this patch stack) or any custom variant.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds basic support for the Freescale MX27ADS reference board.
Currently only a serial console can be used.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Internal clock path handling for the i.MX27 CPU.
Changed against the original Freescale code (and against clocklib for example):
- clock rate is always calculated whenever one ask for the current rate.
(means no "rate" member in the clock structure).
So switching the PLL base frequency will propagate immediately to all
other clocks that are depending on this frequency.
TODO:
- Check if the i.MX21 CPU can share the same code.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds basic mach support for the mx2 processor family, based
on the original freescale code and adapted to mainline kernel coding
style.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds basic mach support for the mx2 processor family, based
on the original freescale code and adapted to mainline kernel coding
style.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch converts the external "add_mx31lite-basic_defconfig.diff" to our
MXC implementation.
Note: This patch fixes a board reference only.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds basic support for i.MX31 LiteKit by LogicPD.
With printascii() in kernel/printk.c, it boots right into the
rootfs-panic.
Note: This is a modified version of Daniel's patch to fit into this patch
stack.
> On 09.06.2008, at 17:26, Russell King - ARM Linux wrote:
>
> > I would much prefer it if board specific includes were included by the
> > code which needs them rather than in asm/arch/hardware.h. With the
> > device model, drivers shouldn't need to include any board specific
> > includes - only the board specific C file should need it.
>
> The new version of this patch (#5102) has been uploaded to the patch
> tracker this morning.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
--
arch/arm/configs/mx31litekit_defconfig | 1100 ++++++++++++++++++++++++++++++
arch/arm/mach-mx3/Kconfig | 7
arch/arm/mach-mx3/Makefile | 1
arch/arm/mach-mx3/mx31lite.c | 96 ++
include/asm-arm/arch-mxc/board-mx31lite.h | 38 +
include/asm-arm/arch-mxc/debug-macro.S | 3
6 files changed, 1245 insertions(+)
Currently there is a mx31ads BSP file in the kernel, but no default
config file.
This patch adds a basic default config for the imx31ads but it is for test
purposes only to ensure the i.MX2 patch stack doesn't break the i.MX3.
Note: For reference only. This configuration is untested as I have
no access to an mx31ads.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch adds timer support for the i.MX machine family. This code can
be used on the following machs:
- i.MX1 (tested)
- i.MX2 (i.MX21 (to be tested), i.MX27 (tested))
- i.MX3 (i.MX31 (tested))
TODO: It seems impossible to build a kernel for more than one CPU because the
timer do not follow the platform device rules. So it does only work if
timer 1 can be accessed on all CPUs at the same address.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch bases on the one from Daniel Mack. The most important change to
Daniel's patch is to be more generic. This gpio routine supports at least
the i.MX27 and i.MX31 processors.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Acked-by: Daniel Mack <daniel@caiaq.de>
Internal clock path handling for the mxc CPUs.
Changed against the original Freescale code (and against clocklib for example):
- clock rate is always calculated whenever one ask for the current rate
(means struct clk has no more a member called "rate"). So switching the PLL
base frequency will propagate immediately to all other clocks that are
depending on this frequency.
Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
This patch removes the statically initialized tables from the i.MX serial
driver and makes the driver fully dependent on the information provided by
the platform_device.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The S3C2410 serial driver in drivers/serial/s3c2410.c has been
growing bigger with the addition of more variants of this hardware
with the growing Samsung SoCs range. As such, it would be
easier to split this code up into a core and per-cpu drivers to
make driver addition easier, and the core smaller.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
For s3c2412, set parent for clk_erefclk and clk_urefclk.
This allow for example to use xtal or extclk for i2s clock.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Matthieu Castet <matthieu.castet@parrot.com>
