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Under heavy system stress mvebu SoC using Cortex A9 sporadically
encountered instability issues.
The "double linefill" feature of L2 cache was identified as causing
dependency between read and write which lead to the deadlock.
Especially, it was the cause of deadlock seen under heavy PCIe traffic,
as this dependency violates PCIE overtaking rule.
Fixes: c8f5a878e554 ("ARM: mvebu: use DT properties to fine-tune the L2 configuration")
Cc: stable@vger.kernel.org
Signed-off-by: Yan Markman <ymarkman@marvell.com>
Signed-off-by: Igal Liberman <igall@marvell.com>
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
[gregory.clement@free-electrons.com: reformulate commit log, add Armada
375 and add Fixes tag]
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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dtc recently added PCI bus checks. Fix these warnings.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The license text has been mangled at some point then copy pasted across
multiple files. Restore it to what it should be.
Note that this is not intended as a license change.
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stefan Roese <sr@denx.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The actual frequency was updated in commit ae142bd99765 ("ARM: mvebu:
Fix the main PLL frequency on Armada 375, 38x and 39x SoCs") but the
comment was not updated. Update it now.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Despite that FS states that rtc is present only in A395 and A398 and not in
A390, the rtc is working with A390.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The whole Armada 39x SoC family of processors has GPIO's which all can be
supported with existing driver.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The whole Armada 39x SoC family of processors has watchdog which can be
supported with existing driver.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Lior Amsalem <alior@marvell.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The whole Armada 39x SoC family of processors has thermal sensor which can
be supported with existing driver.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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This commit enables:
- CA9's Performance Monitor Unit
- CA9 MPcore SoC Controller
- Coherency fabric
on Armada 39x, basing on the Armada 38x (which has the same CA9 CPU).
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Reviewed-by: Lior Amsalem <alior@marvell.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Commit 1140011ee9d9 ("mmc: sdhci-pxav3: Modify clock settings
for the SDR50 and DDR50 modes") has extended the Device Tree
binding used to describe PXAv3 SDHCI controllers in order to be
able to use the SDR50 and DDR50 modes.
This commit updates the Device Tree description of the Armada
39x SDHCI controller in other to take advantage of this
functionality.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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This patch moves all Armada 370/XP/38x/39x SPI controller nodes from the
'internal-regs' node down into the 'soc' node. This is in preparation
to enable the usage of the SPI direct access mode. A follow-up patch
will add the static MBus mappings for the SPI devices into the 'reg'
property of the SPI controller DT node.
By moving these SPI controller nodes, this patch also makes use of
the labels rather than keeping the tree structure.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Mark Brown <broonie@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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In order to optimize the L2 cache performance, this commit adjusts the
configuration of the L2 on the Cortex-A9 based Marvell EBU processors
(Armada 375, 38x and 39x), using the appropriate DT properties.
We enable double linefill, incr double linefill, data prefetch and
disable double linefill on wrap. This matches the configuration that
was fine tuned in the Marvell BSP.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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The Armada 38x and 39x SoC support have an updated XOR hardware block
compared to previous SoCs. These features can be enabled by using the
'armada-380-xor' compatible string, available since commit
6f166312c6ea ("dmaengine: mv_xor: add support for a38x command in
descriptor mode").
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Linux 4.1-rc6
Conflicts:
arch/arm/boot/dts/zynq-7000.dtsi
Resolution summary:
Mainline had an earlier version of the commit, resolve in favor of the
newer patch in next/dt branch.
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Use the new compatible introduced in order to benefit of a wider and
more accurate range of baud rates to be used.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Whereas for Armada 370 and XP the main PLL frequency was 2GHz for the
Armada 375, 38x and 39x, the frequency is 1GHz. When writing support
for these last SoCs, there was no official value for the PLL. Now that
we have it, this patch fixes it in the device tree.
This value is currently only used by the NAND driver for the setting
the NAND timing. Fortunately it is not actually used: all the mainline
board with a NAND flash comes with a NAND device tree node using the
"marvell,nand-keep-config" property. With this property the timings
are not modified in the kernel driver and are kept from the
bootloader.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marcin Wojtas <mw@semihalf.com>
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This commit adds the Device Tree files for the Armada 39x family of
processors, as well as one Armada 398 Development Board.
Like for other Marvell EBU families, a common armada-39x.dtsi contains
the description of the common features of all Armada 39x SoCs, while
armada-390.dtsi and armada-398.dtsi respectively describe the
specificities of those SoCs.
Finally, an armada-398-db.dts file is added to describe the Armada 398
Development Board itself.
So far, the following features are supported:
* SMP: dual Cortex-A9
* Basic ARM IPs: SCU, timer, GIC, L2 cache
* Basic Marvell IPs: pin-muxing, clocks, system controller, MBus
controller, MPIC interrupt controller, timer, CPU reset for SMP,
PMSU.
* I2C
* SPI
* SDHCI
* XOR
* NAND
* UART
* PCIe
Additional features will be supported in the future.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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