| d2e5c871ed8a250f7ee1fe34dd52ed5757363fba |
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24-Jun-2014 |
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> |
drivers: cpuidle: initialize big.LITTLE driver through DT
With the introduction of DT based idle states, CPUidle drivers for ARM
can now initialize idle states data through properties in the device tree.
This patch adds code to the big.LITTLE CPUidle driver to dynamically
initialize idle states data through the updated device tree source file.
Cc: Chander Kashyap <k.chander@samsung.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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| 3b9334ac835bb431e2186645230c9f1eb94b5d49 |
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30-Apr-2014 |
Pawel Moll <pawel.moll@arm.com> |
mfd: vexpress: Convert custom func API to regmap
Components of the Versatile Express platform (configuration
microcontrollers on motherboard and daughterboards in particular)
talk to each other over a custom configuration bus. They
provide miscellaneous functions (from clock generator control
to energy sensors) which are represented as platform devices
(and Device Tree nodes). The transactions on the bus can
be generated by different "bridges" in the system, some
of which are universal for the whole platform (for the price
of high transfer latencies), others restricted to a subsystem
(but much faster).
Until now drivers for such functions were using custom "func"
API, which is being replaced in this patch by regmap calls.
This required:
* a rework (and move to drivers/bus directory, as suggested
by Samuel and Arnd) of the config bus core, which is much
simpler now and uses device model infrastructure (class)
to keep track of the bridges; non-DT case (soon to be
retired anyway) is simply covered by a special device
registration function
* the new config-bus driver also takes over device population,
so there is no need for special matching table for
of_platform_populate nor "simple-bus" hack in the arm64
model dtsi file (relevant bindings documentation has
been updated); this allows all the vexpress devices
fit into normal device model, making it possible
to remove plenty of early inits and other hacks in
the near future
* adaptation of the syscfg bridge implementation in the
sysreg driver, again making it much simpler; there is
a special case of the "energy" function spanning two
registers, where they should be both defined in the tree
now, but backward compatibility is maintained in the code
* modification of the relevant drivers:
* hwmon - just a straight-forward API change
* power/reset driver - API change
* regulator - API change plus error handling
simplification
* osc clock driver - this one required larger rework
in order to turn in into a standard platform driver
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mike Turquette <mturquette@linaro.org>
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| a2bdc32a527e817fdfa6c56eaa6c70f217da6c6c |
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30-Aug-2013 |
Jon Medhurst (Tixy) <tixy@linaro.org> |
ARM: dts: vexpress: Add CCI node to TC2 device-tree
The Versatile Express V2P-CA15_A7 (aka TC2) has a CCI-400 which is
needed to get Multi-Cluster Power Management (MCPM) working.
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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| ceca0e1c3930c942cb849620ebe8fdafb55b5cda |
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07-Aug-2013 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Add SCC to V2P-CA15_A7's device tree
SCC (Serial Configuration Controller) is used to set initial
conditions for the test chip (TC2). Its registers are also mapped
in normal address space and used to obtain runtime information
and for power management.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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| 7e16063bb8f4c4f2e2b055659b40a319092e62da |
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09-Apr-2013 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Remove A9 PMU compatible values for non-A9 platforms
The ARM perf core code used to rely on the pmu node being
compatible with "arm,cortex-a9-pmu", even when the PMUs
of the different Cortex-A processors are not really
compatible... This is no longer required and actually
became harmful, so remove all the offending values
from Versatile Express DTS files.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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| aab7da708649388afc041b173e7d2cf0c4b27e50 |
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17-Dec-2012 |
Mark Rutland <Mark.Rutland@arm.com> |
ARM: vexpress: Fix wdt interrupt in ca15{-tc1,_a7} dts
As the wdt nodes have the gic as their interrupt-parent, their
interrupts property should be 3 cells in format described in the gic
devicetree binding document.
This patch fixes the interrupts property in the wdt nodes to be in the
correct format.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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| ab838bc9c2b9b3afc64d92928dfae9e09fa5b467 |
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24-Jan-2013 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Enable A7 cores in V2P-CA15_A7's Device Tree
As the kernel is able to cope with multiple clusters,
uncomment the A7 cores in the Device Tree for V2P-CA15_A7
tile, making all 5 cores available to the user.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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| 433683a66401adb0150792e725cc4f631c94de46 |
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16-Oct-2012 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Remove motherboard dependencies in the DTS files
The way the VE motherboard Device Trees were constructed
enforced naming and structure of daughterboard files. This
patch makes it possible to simply include the motherboard
description anywhere in the main Device Tree and retires
the "arm,v2m-timer" alias - any of the motherboard SP804
timers will be used instead.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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| 842839a37a9a9ac12d88930b6605c620fc09bc1d |
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17-Sep-2012 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Add config bus components and clocks to DTs
Add description of all functions provided by Versatile Express
motherboard and daughterboards configuration controllers and
clock dependencies between devices.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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| 375faa93cbd8062317d17ddfa6d8fea75f3bbf9b |
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10-Jul-2012 |
Pawel Moll <pawel.moll@arm.com> |
ARM: vexpress: Add Device Tree for V2P-CA15_CA7 core tile
This patch adds Device Tree file for the CoreTile Express
A15x2 A7x3 (V2P-CA15_CA7).
Note that the A7 cpu nodes are commented out, as the
big.LITTLE-relevant patches are not upstreamed yet. Till
this time one can use the board with two A15 cores only,
keeping the A7s in reset by adding the following setting
to the board.txt file in Versatile Express configuration
tree:
SCC: 0x018 0x00001FFF
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
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