The bulk of this branch is updates for Renesas Shmobile. They are still
doing some enablement for classic boards first, and then come up with DT
bindings when they've had a chance to learn more about the hardware. Not
necessarily a bad way to go about it, and they're looking at moving some
of the temporary board code resulting from it to drivers/staging instead
to avoid the churn here.
As a result of the shmobile clock cleanups, we end up merging quite a
bit of SH code here as well. We ended up merging it here instead of in
the cleanup branch due to the other board changes depending on it.
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Merge tag 'boards-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next
Pull ARM SoC board support updates from Olof Johansson:
"The bulk of this branch is updates for Renesas Shmobile. They are
still doing some enablement for classic boards first, and then come up
with DT bindings when they've had a chance to learn more about the
hardware. Not necessarily a bad way to go about it, and they're
looking at moving some of the temporary board code resulting from it
to drivers/staging instead to avoid the churn here.
As a result of the shmobile clock cleanups, we end up merging quite a
bit of SH code here as well. We ended up merging it here instead of
in the cleanup branch due to the other board changes depending on it"
* tag 'boards-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (130 commits)
ARM: davinci: remove checks for CONFIG_USB_MUSB_PERIPHERAL
ARM: add drivers for Colibri T30 to multi_v7_defconfig
ARM: shmobile: Remove Genmai reference DTS
ARM: shmobile: Let Genmai multiplatform boot with Genmai DTB
ARM: shmobile: Sync Genmai DTS with Genmai reference DTS
ARM: shmobile: genmai-reference: Remove legacy clock support
ARM: shmobile: Remove non-multiplatform Genmai reference support
ARM: configs: enable XHCI mvebu support in multi_v7_defconfig
ARM: OMAP: replace checks for CONFIG_USB_GADGET_OMAP
ARM: OMAP: AM3517EVM: remove check for CONFIG_PANEL_SHARP_LQ043T1DG01
ARM: OMAP: SX1: remove check for CONFIG_SX1_OLD_FLASH
ARM: OMAP: remove some dead code
ARM: OMAP: omap3stalker: remove two Kconfig macros
ARM: tegra: tegra_defconfig updates
ARM: shmobile: r7s72100: use workaround for non DT-clocks
ARM: shmobile: Add forward declaration of struct clk to silence warning
ARM: shmobile: r7s72100: remove SPI DT clocks from legacy clock support
ARM: shmobile: r7s72100: add spi clocks to dtsi
ARM: shmobile: r7s72100: remove I2C DT clocks from legacy clock support
ARM: shmobile: r7s72100: add i2c clocks to dtsi
...
SCIF0 and SCIF1 are used as debug serial ports. Enable them and
configure pinmuxing appropriately. We can now remove the clkdev
registration hack for SCIF devices from the Koelsch reference board
file.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[horms+renesas@verge.net.au: added aliases to avoid device renumbering]
[horms+renesas@verge.net.au: resolved conflicts]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Convert the Koelsch board support to use shmobile_init_delay()
to be able to migrate away from per-SoC delay setup functions.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The CMT (Compare Match Timer) driver implements a new style of platform
data that handles the timer as a single device with multiple channel.
Switch from the old-style platform data to the new-style platform data.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[horms+renesas@verge.net.au resolved conflict: use clk_names]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add SDHI0, SDHI1 and SDHI2 to the clock workaround list for
Koelsch multiplatform. Without these additional lines wakeup
from Suspend-to-RAM never happens.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Due to issues with runtime PM clock management, clocks not explicitly
managed by their drivers may not be enabled at all, or be inadvertently
disabled by the clk_disable_unused() late initcall.
Until this is fixed, add a temporary workaround, calling
shmobile_clk_workaround() with enable == true.
For now this enables the clocks for: ether, i2c2, msiof0, qspi_mod, and
thermal. More clocks can be added if needed.
Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Convert the Koelsch DT reference code to use the newly introduced
function shmobile_clk_workaround().
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Koelsch DT reference is these days built for multiplatform
only which means that CCF comes with the package. Remove
unused legacy code ifdefs to clean up the code.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The DU device has no DT bindings yet, instantiate it as a platform
device for now.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Magnus Damm <damm@opensource.se>
[horms+renesas@verge.net.au: omitted DTS portion]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Make the clock lookup hack more generic to ease the addition of more
devices.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The koelsch_add_standard_devices() function calls clk_get() but then fails
to check that it returns an error pointer instead of NULL on failure.
This was added by f31239ef ("ARM: shmobile: koelsch-reference:
Instantiate clkdevs for SCIF and CMT") in Simon Horman's
renesas-boards2-for-v3.14 tag.
The issue is not serious as it does not cause a crash and seems to not be
actually causing any issues now the other clock bugs have been fixed.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[horms+renesas@verge.net.au: tweaked changelog]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Let the multiplatform Koelsch support boot with the legacy DTS for
Koelsch as well as the Koelsch reference DTS.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Now that the common clock framework is supported, the clock lookup
entries in clock-r8a7791.c are not registered anymore. Devices must
instead reference their clocks in the device tree. However, SCIF and CMT
devices are still instantiated through platform code, and thus need a
clock lookup entry.
Retrieve the SCIF and CMT clock entries by name and register clkdevs for
the corresponding devices. This will be removed when the SCIF and CMT
devices will be instantiated from the device tree.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The common clock framework is initialized in the rcar_gen2_init_timer()
function, remove the of_clk_init() call.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Hook in shmobile_init_late() on Koelsch. This enables some PM
related things like CPUIdle and Suspend-to-RAM.
With this patch applied it is possible to use Suspend-to-RAM:
# echo enabled > /sys/class/tty/ttySC6/power/wakeup
# echo mem > /sys/power/state
(wake by sending a character on the serial console)
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add Koelsch and r8a7791 to CONFIG_SHMOBILE_MULTI. At this
point CCF is not yet supported so you cannot run this code
yet. For CCF support to happen several different components
are needed, and this is one simple portion that moves us
forward. Other patches need to build on top of this one.
Koelsch board support exists in 3 flavors:
1) SHMOBILE_MULTI, MACH_KOELSCH - board-koelsch-reference.c (CCF + DT)
2) SHMOBILE, MACH_KOELSCH_REFERENCE - board-koelsch-reference.c (DT)
3) SHMOBILE, MACH_KOELSCH - board-koelsch.c (legacy C code)
When CCF is done then 2) will be removed. When 1) includes same features
as 3) then 3) will be removed.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Add DT reference support for the r8a7791 Koelsch board.
This board support file will be used together with common
clocks and multiplatform in the future.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Linus Torvalds
Laurent Pinchart
Magnus Damm
Magnus Damm
Simon Horman
Geert Uytterhoeven
Ben Dooks