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| author | Marcin Wojtas <mw@semihalf.com> | 2016-04-29 09:49:07 +0200 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2016-05-03 08:57:47 +0200 |
| commit | ac5f0f3f863e9e6703a3038aa72814d2d0e8a056 (patch) | |
| tree | bc9da076d8ea0de1f1a2da61ef329d48e620b150 /Documentation/devicetree | |
| parent | dmaengine: mv_xor: use SoC type instead of directly the operation mode (diff) | |
| download | linux-ac5f0f3f863e9e6703a3038aa72814d2d0e8a056.tar.xz linux-ac5f0f3f863e9e6703a3038aa72814d2d0e8a056.zip | |
dmaengine: mv_xor: add support for Armada 3700 SoC
Armada 3700 SoC comprise a single XOR engine compliant with the ones used
in older Marvell SoC's like Armada XP or 38x. The only thing that needs
modification is the Mbus configuration, which has to be done on two
levels: global and in device. The first one is inherited from the
bootloader. The latter can be opened in a default way, leaving
arbitration to the bus controller. Hence filled mbus_dram_target_info
structure is not needed.
Patch "dmaengine: mv_xor: optimize performance by using a subset
of the XOR channels" introduced limitation for using XOR engines and
channels vs number of available CPU's. Those constraints do not however
fit Armada 3700 architecture with two possible CPU's and single,
dual-channel engine. Hence in this commit an adjustment for setting
maximum available channels is added.
This patch enables XOR access to DRAM by opening default window to 4GB
space with specific attribute.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/dma/mv-xor.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/dma/mv-xor.txt b/Documentation/devicetree/bindings/dma/mv-xor.txt index 276ef815ef32..c075f5988135 100644 --- a/Documentation/devicetree/bindings/dma/mv-xor.txt +++ b/Documentation/devicetree/bindings/dma/mv-xor.txt @@ -1,7 +1,10 @@ * Marvell XOR engines Required properties: -- compatible: Should be "marvell,orion-xor" or "marvell,armada-380-xor" +- compatible: Should be one of the following: + - "marvell,orion-xor" + - "marvell,armada-380-xor" + - "marvell,armada-3700-xor". - reg: Should contain registers location and length (two sets) the first set is the low registers, the second set the high registers for the XOR engine. |