OMAP4/5 has been (ab)using the gic_arch_extn to provide
wakeup from suspend, and it makes a lot of sense to convert
this code to use stacked domains instead.

This patch does just this, updating the DT files to actually
reflect what the HW provides.

BIG FAT WARNING: because the DTs were so far lying by not
exposing the WUGEN HW block, kernels with this patch applied
won't have any suspend-resume facility when booted with old DTs,
and old kernels with updated DTs won't even boot.

On a platform with this patch applied, the system looks like
this:

root@bacon-fat:~# cat /proc/interrupts
            CPU0       CPU1
 16:          0          0     WUGEN  37  gp_timer
 19:     233799     155916       GIC  27  arch_timer
 23:          0          0     WUGEN   9  l3-dbg-irq
 24:          1          0     WUGEN  10  l3-app-irq
 27:        282          0     WUGEN  13  omap-dma-engine
 44:          0          0  4ae10000.gpio  13  DMA
294:          0          0     WUGEN  20  gpmc
297:        506          0     WUGEN  56  48070000.i2c
298:          0          0     WUGEN  57  48072000.i2c
299:          0          0     WUGEN  61  48060000.i2c
300:          0          0     WUGEN  62  4807a000.i2c
301:          8          0     WUGEN  60  4807c000.i2c
308:       2439          0     WUGEN  74  OMAP UART2
312:        362          0     WUGEN  83  mmc2
313:        502          0     WUGEN  86  mmc0
314:         13          0     WUGEN  94  mmc1
350:          0          0      PRCM  pinctrl, pinctrl
406:   35155709          0       GIC 109  ehci_hcd:usb1
407:          0          0     WUGEN   7  palmas
409:          0          0     WUGEN 119  twl6040
410:          0          0   twl6040   5  twl6040_irq_ready
411:          0          0   twl6040   0  twl6040_irq_th
IPI0:          0          1  CPU wakeup interrupts
IPI1:          0          0  Timer broadcast interrupts
IPI2:      95334     902334  Rescheduling interrupts
IPI3:          0          0  Function call interrupts
IPI4:        479        648  Single function call interrupts
IPI5:          0          0  CPU stop interrupts
IPI6:          0          0  IRQ work interrupts
IPI7:          0          0  completion interrupts
Err:          0
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1426088629-15377-8-git-send-email-marc.zyngier@arm.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>

Add device tree nodes and pinmux entries for Video Processing
Front End (VPFE) on am437x gp evm.
Signed-off-by: NBenoit Parrot <bparrot@ti.com>
Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add DCAN support for AM437x GP EVM with both DCAN instances.

[Roger Q] Updated output pin to not use pull up.
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NGeorge Cherian <george.cherian@ti.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch adds tscadc DT entries for am437x-gp-evm
and am43x-epos-evm.
Signed-off-by: NVignesh R <vigneshr@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

DCDC3 supplies voltage to DDR. Fix DCDC3 volatge to 1.5V which is the reset
value. Programming to a non-reset value while executing from DDR will result
in random hangs.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

NAND uses wait pin only to indicate device readiness after
a block/page operation. It is not use to extend individual
read/write cycle and so read/write wait pin monitoring must
be disabled for NAND.

This patch also gets rid of the below warning when NAND is
accessed for the first time.

omap_l3_noc 44000000.ocp: L3 application error: target 13 mod:1 (unclearable)
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Reviewed-by: NPekon Gupta <pekon@pek-sem.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

am437x-gp-evm uses a NAND chip with page size 4096 bytes
and spare area of 225 bytes per page.

For such a setup it is preferrable to use BCH16 ECC scheme over
BCH8. This also makes it compatible with ROM code ECC scheme so
we can boot with NAND after flashing from kernel.
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Reviewed-by: NPekon Gupta <pekon@pek-sem.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

On the GP EVM, the ambient light sensor is limited to 100KHz on the
I2C bus.

So use 100kHz for I2C on the GP EVM due to this limitation on the
ambient light sensor.
Reported-by: NAparna Balasubramanian <aparnab@ti.com>
Signed-off-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Update the bindings for touchscreen size.
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Add TPS65218 device tree nodes. i2c clock frequency setting
also added as part of tps65218 nodes addition. As i2c clock
enabling is required.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Fix i2c nodes indentation.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Reviewed-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add DT data for am437x-gp-evm's LCD panel.
Signed-off-by: NSathya Prakash M R <sathyap@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>

Adds pinmux and DT node for Micron (MT29F4G08AB) x8 NAND device present on
am437x-gp-evm board.
(1) As NAND Flash data lines are muxed with eMMC, Thus at a given time either
    eMMC or NAND can be enabled. Selection between eMMC and NAND is controlled:
    (a) By dynamically driving following GPIO pin from software
        SPI2_CS0(GPIO) == 0 NAND is selected (default)
        SPI2_CS0(GPIO) == 1 eMMC is selected
    (b) By statically using Jumper (J89) on the board

(2) As NAND device connnected to this board has page-size=4K and oob-size=224,
    So ROM code expects boot-loaders to be flashed in BCH16 ECC scheme for
    NAND boot.
Signed-off-by: NPekon Gupta <pekon@ti.com>
Reviewed-by: NJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add CPSW ethernet support for AM437x GP EVM which has one slave pinned out
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The VTT regulator for DDR3 termination on the am437x-gp-evm is
controlled by a gpio. It is configured by the bootloader so here we
define an always-on, fixed voltage regulator to hold the gpio.
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add touchscreen support for AM437x GP EVM using pixcir
touchscreen controller.

CC: Benoit Cousson <bcousson@baylibre.com>
CC: Tony Lindgren <tony@atomide.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Acked-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Enable
	- USB PHY
	- USB
for am437x-gp-evm
Signed-off-by: NGeorge Cherian <george.cherian@ti.com>
Acked-by: NRoger Quadros <rogerq@ti.com>
Acked-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Do not reset GPIO5 at boot-up because GPIO5_7 is used
on AM437x GP-EVM to control VTT regulators on DDR3.
Without this some GP-EVM boards will fail to boot because
of DDR3 corruption.
Reported-by: NNishanth Menon <nm@ti.com>
Tested-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NDave Gerlach <d-gerlach@ti.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

enable sd card slot on am437x-gp-evm
Signed-off-by: NBalaji T K <balajitk@ti.com>
Signed-off-by: NMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add gpio keys node for am43x gp evm.
Signed-off-by: NSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>

Enable gpio3, gpio4, it will be used by gpio matrix keys. Also,
can be used by othe peripherals.
Signed-off-by: NSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>

Add pwm backlight support for gp evm.
Signed-off-by: NSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>

AM437x GP EVM DTS with pinmux information to make I2C on
EVM usable.
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NSourav Poddar <sourav.poddar@ti.com>
Signed-off-by: NAfzal Mohammed <afzal@ti.com>
Signed-off-by: NBenoit Cousson <bcousson@baylibre.com>