Original author of this patch's code is:

    Matt Ranostay <mranostay@gmail.com>

This optional binding extension allows specification of a hwmod
and associate hardware reset line which should be deasserted for
the device to be functional.

The implementation works but is suboptimal. The problem is that this
deassertion occurs before clocks are enabled and we are warned that the
hard reset failed. Ideally the list of reset lines requested to be
deasserted would be cached and used within the hwmod enable sequencing
(instead of it just returning if any hardware reset line is asserted).

This reset line deassertion step is required to use the PRU-ICSS on
AM335x boards.

When booting with CONFIG_ARM_APPENDED_DTB (either because of using an old
U-Boot, not wanting the hassle of 2 files or when using Falcon fast boot
mode in U-Boot), nothing updates the ethernet hwaddr specified for the
CPSW slaves, causing the driver to use a random hwaddr, which is some times
troublesome.

The am33xx has unique ethernet hwaddrs programmed in the efuse, so it makes
more sense to default to these rather than random ones. Add a fixup step
which adds mac-address dt properties using the efuse addresses if the DTB
didn't contain valid ones.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

Turns out that we really need those panel settings.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Fix the crash by not making pm_runtime calls while in the irq.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

In certain senarios drm will initialize before i2c this means that i2c
slave devices like the nxp tda998x will fail to be probed.  This patch
detects this condition then defers the probe of the slave device and
the tilcdc main driver.

Signed-off-by: Darren Etheridge <detheridge@ti.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

The preferred_bpp value in currently hard-coded to 16.
This causes color corruption on the am335x-evm lcd panel which
requires 32 bpp instead. This changes attempts to use the configured
bpp value from the DT or built-in panel-info struct.

Signed-off-by: Benoit Parrot <bparrot@ti.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Makefile changes to support the DT cape definitions.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

This driver implements a reset controller device that toggle a gpio
connected to a reset pin of a peripheral IC. The delay between assertion
and de-assertion of the reset signal can be configured via device tree.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>

Add analogous option to disable_partno; this one doesn't require the presence of
a base dts override.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Now each cape can declare an exclusive-use property which is
a string list of every resource it requires.
Attempting to load a cape that uses the same resource will fail.

Allow capes to define priorities, this is important when you need
to load built-in capes last, only after all the add-on capes have
loaded.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Allow capes to be disabled on the kernel command line.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Added a simple MODULE_PARM_DESC for the extra_override option

Signed-off-by: Matt Ranostay <mranostay@gmail.com>

Use this option to force a slot override to load unconditionally.
Useful for testing.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Wrong test for not-found case lead to crash. Fix.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Cape removal wasn't working properly before; fix it.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

__devinit/__devexit and the like has been purged. Remove them.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

A cape loader based on DT overlays and DT objects.

Beaglebone cape manager implementation.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Introduce a cape loader using DT overlays and dynamic
DT objects.

Makefile and Kconfig fragments.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

When using pinctrl-single to handle i2c initialization, it has
to be done early. Whether this is the best way to do so, is an
exercise left to the reader.

Simple solenoid handling using grove i2c.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

In kernel users need to access the EEPROM using the i2c_client
interface. Extend at24 to use it via the command interface.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>

If the resolve config option has been enabled compile
the device tree sources with the appropriate flag to generate
the required for resolution __symbols__ node.

Note that both arch/arm/Makefile & arch/arm/boot/Makefile need
the DTC_FLAGS definition, because when issuing make dtbs the
boot Makefile doesn't seem to pick it.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Add the capemanager in the bone/beaglebone DTS.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Add the I2C definitions for the EEPROM devices on the baseboard
and on the possibly connected capes.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

Add a gpio property for controlling reset of the mmc device.
eMMC on the beaglebone black requires it.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

of_find_node_by_name expect to have the parent node reference taken.

omap hwmod is really sensitive to hwmod misconfiguration.
Getting a minor clock wrong always ended up in a crash.
Attempt to be more resilient by not assigning variables with
error codes and then attempting to use them.

Without this patch, missing a clock ends up with something like this:
omap_hwmod: ehrpwm0: cannot clk_get opt_clk ehrpwm0_tbclk!
Unable to handle kernel NULL pointer dereference at virtual address 0000002a!
pgd = c0004000!
[0000002a] *pgd=00000000!
Internal error: Oops: 5 [#1] SMP ARM!
Modules linked in:!
CPU: 0    Not tainted  (3.8.0-rc2-12157-g76c7825-dirty #291)!
PC is at __clk_prepare+0x10/0x70!
LR is at clk_prepare+0x1c/0x34!
pc : [<c03e37f0>]    lr : [<c03e386c>]    psr: a0000113!
sp : cf04fef8  ip : 22222222  fp : 00000000!
r10: ffffffea  r9 : 00000000  r8 : 00000000!
r7 : fffffffe  r6 : 00000001  r5 : fffffffe  r4 : fffffffe!
r3 : cf041ac0  r2 : cf04ff00  r1 : 22222222  r0 : fffffffe!
Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel!
Control: 10c5387d  Table: 80004019  DAC: 00000015!
Process swapper/0 (pid: 1, stack limit = 0xcf04e240)!
Stack: (0xcf04fef8 to 0xcf050000)!
fee0:                                                       cf041ac0 c07749f4!
ff00: fffffffe c03e386c c07499cc c073c070 c073d2fc c06d4e4c c073c070 c071cc18!
ff20: c06d4c4c 00000000 00000000 c0708284 c06c91bc c0025e28 c073a030 00000001!
ff40: c06f5f60 c06f5f40 c06d5324 c06d533c cf04e000 c0008870 c06d5324 c060abe8!
ff60: c07082e8 00000002 00000001 c06f5f60 c06f5f40 c077d700 00000099 c04a43d4!
ff80: 00000001 00000001 c06c91bc 00000000 00000000 c04a42dc 00000000 00000000!
ffa0: 00000000 00000000 00000000 c000d678 00000000 00000000 00000000 00000000!
ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000!
ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 9e7befee f7bbaaab!
[<c03e37f0>] (__clk_prepare+0x10/0x70) from [<c03e386c>] (clk_prepare+0x1c/0x34)!
[<c03e386c>] (clk_prepare+0x1c/0x34) from [<c06d4e4c>] (_init+0x200/0x288)!
[<c06d4e4c>] (_init+0x200/0x288) from [<c0025e28>] (omap_hwmod_for_each+0x28/0x58)!
[<c0025e28>] (omap_hwmod_for_each+0x28/0x58) from [<c06d533c>] (omap_hwmod_setup_all+0x18/0x34)!
[<c06d533c>] (omap_hwmod_setup_all+0x18/0x34) from [<c0008870>] (do_one_initcall+0x90/0x160)!
[<c0008870>] (do_one_initcall+0x90/0x160) from [<c04a43d4>] (kernel_init+0xf8/0x290)!
[<c04a43d4>] (kernel_init+0xf8/0x290) from [<c000d678>] (ret_from_fork+0x14/0x3c)!
Code: e92d4038 e2504000 01a05004 0a000015 (e594302c) !
---[ end trace 1b75b31a2719ed1c ]---!
Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b!

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>