At least the smc91x driver expects the device to be at 0x300
offset from bus base address. This does not work currently
for GPMC when booted in device tree mode as it attempts to
remap the the allocated GPMC partition to the address
configured by the device tree plus the device offset.

Note that this works just fine when booted with legacy mode.

Let's fix the issue by just ignoring any device specific
offset while remapping. And let's make sure the remap
address confirms to the GPMC 16MB minimum granularity
as listed in the TRM for GPMC_CONFIG7 BASEADDRESS bits.

Otherwise we can get something like this:

omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300

Cc: Pekon Gupta <pekon@ti.com>
Reviewed-by: NJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

If gpmc_cs_remap() fails we will get an error because we are calling
release_resource() on an uninitialized resource. Let's fix that by
checking the resource flags. And while at it, let's also make
gpmc_cs_delete_mem() use the res pointer that we already have to
avoid confusion.

Without this patch we can get the following error:

omap-gpmc 6e000000.gpmc: cannot remap GPMC CS 1 to 0x01000300
Unable to handle kernel NULL pointer dereference at virtual address 00000018
...
(gpmc_cs_free+0x94/0xc8)
(gpmc_probe_generic_child+0x178/0x1ec)
(gpmc_probe_dt+0x1bc/0x2cc)
(gpmc_probe+0x250/0x44c)
(platform_drv_probe+0x3c/0x6c)
(really_probe+0x74/0x208)
(driver_probe_device+0x34/0x50)
(bus_for_each_drv+0x60/0x8c)
(device_attach+0x80/0xa4)
(bus_probe_device+0x88/0xb0)
(device_add+0x320/0x450)
(of_platform_device_create_pdata+0x80/0x9c)
(of_platform_bus_create+0xd0/0x170)
(of_platform_bus_create+0x12c/0x170)
(of_platform_populate+0x60/0x98)
(pdata_quirks_init+0x30/0x48)
(customize_machine+0x20/0x48)
(do_one_initcall+0x2c/0x14c)
(do_basic_setup+0x98/0xd8)
(kernel_init_freeable+0x12c/0x1e0)
(kernel_init+0x8/0xf0)
(ret_from_fork+0x14/0x2c)
Code: e1a04000 e59f0070 eb195136 e5942010 (e5923018)

Cc: Pekon Gupta <pekon@ti.com>
Reviewed-by: NJavier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Ntony Lindgren <tony@atomide.com>

Do not try to initialize display for DT boot, since omapdss
is now initialized via Device Tree. Without this patch the
display subsystem does not properly come up.
Signed-off-by: NSebastian Reichel <sre@kernel.org>
Acked-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Bug was introduced by commit 'f92d9597: ARM: OMAP2+: hwmod:
Extract no-idle and no-reset info from DT'

There were 2 versions of the patch posted which resulted in the above
commit. While v1 [1] had the bug, v2 [2] had it fixed.
However v1 apparently seemed to have been pulled in by mistake
introducing the bug.

Given of_find_property() does return NULL when the node passed is
NULL, it did not introduce any functional issues as such, just the
fact that the second if check was executed unnecessarily.

[1] https://www.mail-archive.com/linux-omap@vger.kernel.org/msg94220.html
[2] http://www.spinics.net/lists/linux-omap/msg98490.html

Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Fixes: f92d9597 ("ARM: OMAP2+: hwmod: Extract no-idle and no-reset info from DT")
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

On AM43xx, if a PLL is in bypass at kernel init, the code in
omap2_get_dpll_rate() will not realize this and will try to calculate
the clock rate using the multiplier and the divider, resulting in
errors.

omap2_init_dpll_parent() has similar issue.

Add the missing soc_is_am43xx() check to make the code work on AM43xx.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: NSathya Prakash M R <sathyap@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

OMAP3 doesn't contain "l3_init_clkdm" clock domain. Use the
proper clock domains for USB Host and USB TLL modules.

Gets rid of the following warnings during boot
 omap_hwmod: usb_host_hs: could not associate to clkdm l3_init_clkdm
 omap_hwmod: usb_tll_hs: could not associate to clkdm l3_init_clkdm
Reported-by: NNishanth Menon <nm@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Fixes: de231388 ("ARM: OMAP: USB: EHCI and OHCI hwmod structures for OMAP3")
Cc: Keshava Munegowda <keshava_mgowda@ti.com>
Cc: Partha Basak <parthab@india.ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

There is a solitary write to this register every wakeup from off-mode,
which isn't doing anything, so remove it.

Also note that modifying this register trashes any attempted
voltage scaling configuration and the change probably should
never have gotten merged in the first place.

Cc: Nishanth Menon <nm@ti.com>
Cc: Kevin Hilman <khilman@linaro.org>
Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: NTero Kristo <t-kristo@ti.com>
[tony@atomide.com: updated comments to describe regression]
Signed-off-by: NTony Lindgren <tony@atomide.com>

Remove pdata quirks for the displays on boards that are now supported
properly with DT.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>

Export the DMA register information from the SoC specific data, such
that we can access the registers directly in omap-dma.c, mapping the
register region ourselves as well.

Rather than calculating the DMA channel register in its entirety for
each access, we pre-calculate an offset base address for the allocated
DMA channel and then just use the appropriate register offset.
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The omap_system_dma_plat_info structure is only seven words, it's not
worth the expense of kmalloc()'ing backing store for this only to
release it later.  Note that platform_device_add_data() copies the
data anyway.  Clean up the initialisation of this structure - we don't
even need code to initialise most of this structure.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This really needs to be there, because otherwise the plat-omap code can
kfree() this data structure, and then re-use the pointer later.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

There's no need for this to be a global variable; move it into the
errata configuration function instead.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

We can do much better with this by using a structure to describe each
register, rather than code.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

dma_stride and dma_common_ch_start are only ever initialised to one
known value at initialisation, and are private to each of these files.
There's no point these being variables at all.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The disable_irq_lch method is never actually used, so there's not much
point it existing; remove it.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

CONFIG_PROC_DEVICETREE has been removed from the tree. This commit
removes a dangling select of the config symbol.
Signed-off-by: NGrant Likely <grant.likely@linaro.org>
Cc: Paul Bolle <pebolle@tiscali.nl>
Cc: Rob Herring <rob.herring@linaro.org>

As there is no common panel framework in the kernel, we have OMAP
specific panel drivers. However, the DT data should be generic. This
brings the issue that some other platform could use the same panels, and
would need to create a driver with the same 'compatible' string as the
OMAP driver.

In the long run, we have to get a common panel framework. For the time
being, this patch solves the issue:

At early boot time, we go through the DT nodes looking for the panels
the kernel supports for OMAP. For each found node, the 'compatible'
string is prepended with "omapdss,", i.e. "sony,acx565akm" becomes
"omapdss,sony,acx565akm". The OMAP display drivers all have "omapdss,"
at the beginning of their compatible field.

This allows us to have generic DT data, but OMAP specific display
drivers.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>

The OMAP display architecture requires a bunch of platform devices which
are not created via .dts (for now). We also need to pass a few function
pointers and the DSS hardware version from the arch code to omapdss
driver.

This patch adds omapdss_init_of() function, called from board-generic at
init time, which handles those tasks.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>

Use the proper clock name 'usbhost_120m_fck' instead of the
alias 'ehci_logic_fck'

Get rid of the 'ehci_logic_fck' alias from the OMAP3 hwmod data
as well.
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Not all revisions have all the clocks so get the necessary clocks
based on hardware revision.

This should avoid un-necessary clk_get failure messages that were
observed earlier.

Also remove the dummy USB host clocks from the OMAP3 clock data.
These are no longer expected by the driver.

Acked-by: Mike Turquette <mturquette@linaro.org> [OMAP3 CLK data]
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The spinlock module's SYSCONFIG register does not support
smart wakeup, so remove this flag from the idle modes in
the spinlock hwmod definition.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Acked-by: NBenoit Cousson <bcousson@baylibre.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Just like IS_PM34XX_ERRATUM, IS_PM44XX_ERRATUM is valid only if
CONFIG_PM is enabled, else, disabling CONFIG_PM results in build
failure complaining about the following:
arch/arm/mach-omap2/built-in.o: In function `omap4_boot_secondary':
:(.text+0x8a70): undefined reference to `pm44xx_errata'

Fixes: c9621844 (ARM: OMAP4: PM: add errata support)
Reported-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NNishanth Menon <nm@ti.com>
Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.ocm>
Acked-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>

When an interrupt has become active on the INTC it will stay active
until it is acked, even if masked or de-asserted. The
INTC_PENDING_IRQn registers are however updated and since these are
used by omap_intc_handle_irq to determine which interrupt to handle,
it will never see the active interrupt. This will result in a storm of
useless interrupts that is only stopped when another higher priority
interrupt is asserted.

Fix by sending the INTC an acknowledge if we find no interrupts to
handle.

Cc: stable@vger.kernel.org
Signed-off-by: NStefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

OMAP5 has the same iommus as OMAP4, so extend the OMAP4
iommu pdata quirks for OMAP5 as well.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

A new MMU hwmod class and data structures are created
to represent the MMUs within the IPU and DSP processor
subsystems in OMAP5. The MMUs in OMAP5 are identical to
those in OMAP4.

Cc: Benoit Cousson <bcousson@baylibre.com>
Signed-off-by: NSuman Anna <s-anna@ti.com>
Acked-by: NPaul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The OMAP iommu driver performs the reset management for the
iommu instances in processor sub-systems using the omap_device
API which are currently supplied as platform data ops. Use pdata
quirks to maintain the functionality as the OMAP iommu driver
gets converted to use DT nodes, until the reset portions are
decoupled from omap_hwmod/omap_device into a separate reset
driver.

This patch adds the pdata quirks for the reset management of
iommus within the DSP (OMAP3 & OMAP4) and IPU subsystems (OMAP4).
Signed-off-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The IOMMU DT adaptation support uses the device name instead
of an iommu object name. Fixup the ISP device archdata MMU
name at runtime if using DT-boot. This allows the OMAP3 camera
to be functional in both legacy and DT boots. The iommu object
names should eventually vanish when all the IOMMU users have
been converted to DT nodes.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The IVA MMU is not functional when used through the hwmod and
omap_device layers. Add fixes to clockdomain and hwmod data
to have it functional. The hwmod changes are needed to enable
the clock, and the SWSUP change is needed to wakeup the domain
because the power domain is programmed to be in RET, and there
is no automatic power domain switching to ON.
Signed-off-by: NSuman Anna <s-anna@ti.com>
Acked-by: NPaul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

CONFIG_OMAP_IOMMU_IVA2 was defined originally to avoid conflicting
usage by tidspbridge and other iommu users. The same can be achieved
by marking the DT node disabled, so remove this obsolete flag and
the corresponding hwmod data can be enabled.

Cc: Paul Walmsley <paul@pwsan.com>
Signed-off-by: NFlorian Vaussard <florian.vaussard@epfl.ch>
[s-anna@ti.com: revise commit log]
Signed-off-by: NSuman Anna <s-anna@ti.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NPaul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Enable the WiLink6 connected to mmc2.

Signed-off-by: Imre Kaloz <kaloz@openwrt.org
Signed-off-by: NTony Lindgren <tony@atomide.com>

The necessary clock phandle for the EHCI clock is now provided
via device tree so we no longer need this legacy method.

Update the omap4-panda and omap5-uevm board DTS to provide the
necessary EHCI PHY clock information.
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

As OMAP2+ is moving to a full DT boot for all SoC families, commit
7ce93f31 "ARM: OMAP2+: Fix more missing data for omap3.dtsi file"
adds basic DT bits for OMAP3. But the driver is not yet converted,
so this will not work and driver will not be probed. Convert it!

The legacy boot mode is still supported until OMAP3 is converted
to DT-boot only.
Signed-off-by: NFlorian Vaussard <florian.vaussard@epfl.ch>
[s-anna@ti.com: dev_name adaptation and improved error checking]
Signed-off-by: NSuman Anna <s-anna@ti.com>
[tony@atomide.com: Ack for arch/arm/*omap* parts]
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NJoerg Roedel <joro@8bytes.org>

This patch
 - refactors gpmc_hwecc_bch_capable()
 - add checks for new platforms like dra7xx, am43xx
 - add checks for OMAP3 SoC, w.r.t. new ECC schemes spawned in following commit:
    commit ac65caf5
    ARM: OMAP2+: cleaned-up DT support of various ECC schemes
Signed-off-by: NPekon Gupta <pekon@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The Kconfig symbols OMAP_PACKAGE_ZAC and OMAP_PACKAGE_ZAF were added in
v2.6.36. They have never been used. Setting them has no effect. These
symbols can safely be removed.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
[tony@atomide.com: updated to remove also the related mux.h entries]
Signed-off-by: NTony Lindgren <tony@atomide.com>

The SyncTimer in AM43x is clocked using the following two sources:
1) An inaccuarte 32k clock (CLK_32KHZ) derived from PER DPLL, causing system
   time to go slowly (~10% deviation).
2) external 32KHz RTC clock, which may not always be available on board like
   in the case of ePOS EVM

Use gptimer as clocksource instead, as is done in the case of AM335x
(which does not have a SyncTimer). With this, system time keeping works
accurately.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Determine AM43x device features by reusing AM335x helper as feature
register layout is similar.
And also exporting AM43xx family name.
Signed-off-by: NAfzal Mohammed <afzal@ti.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Adding ID for AM437x ES1.1 silicon.
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

sbc-t3x boards features two external USB ports on SB-T35 baseboard.
The baseboardi USB hub reset signal should be de-asserted to make
those ports functional.

sbc-t3517 features additional (assembled on CoM) USB hub which also
requires reset signal handling.

Add quirks code to handle proper reset pulse signal.
Signed-off-by: NDmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add support for CM-T3517 CoM and SBC-T3517 board.

reused common support for sbc-t3x boards
(omap3-cm-t3x.dtsi, omap3-sb-t35.dtsi):

* SB-T35 baseboard eth
* MMC1, UART3
* HS USB Port 1/2
* I2C1/3
* Heartbit led

Added basic support for:

* MMC1 wp/cd signals
* CM-T3517 Usb Hub
* WL12xx WiFi chip
* Davinci EMAC
* AM35X OTG
Signed-off-by: NDmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add support for CM-T3530 CoM and SBC-T3530 board.
Signed-off-by: NDmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: NTony Lindgren <tony@atomide.com>