ARM: mvebu: Hardware coherency support for Armada 375 and 38x
Get series with b4
b4 am 20140324160620.607c77cd@skateVersions newest first
- v1 Latest0 of 10 patches 0 repliesNew
Patches in v1 No applies recorded yet
None of the 10 patches the cover letter announces are in this archive.
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v1 yet.
Cover letter [PATCH 00/10] ARM: mvebu: Hardware coherency support for Armada 375 and 38x
Jason, Gregory, Andrew, Sebastian,
Any news about this patch set? It is not aimed at 3.15 as was discussed already with Jason, but since I'd still like to have some early comments about this patch series for 3.16, since we would also like to land the Armada 375/38x SMP support in 3.16, which will sit on top of this series.
So far, Jason made one comment about runtime detecting the need for the Armada 375 coherency workaround, to which I already replied. No other comments have been made, unless I missed them, of course.
Thanks a lot!
Thomas
Quoted 60 lines · Thomas Petazzoni
Jason, Gregory, Andrew, Sebastian,
This set of patches add hardware coherency support for the new Armada 375 and Armada 38x SoCs. The patch set can be divided in three sections:
* Patches 1, 2, 3 and 4 prepare the introduction of the support for new SoC in the existing coherency code.
The main change is that the mvebu-mbus driver no longer pokes into the Device Tree to find whether hardware I/O coherency is available or not: this information is passed as argument to the mvebu-mbus initialization function. This avoids changing the mvebu-mbus driver to add the compatible strings of all possible coherency fabrics, and also avoids encoding specific conditions in the mvebu-mbus
driver: on Armada 375 and 38x, the hardware I/O coherency can only be enabled in SMP mode.These preparation patches had already been sent in the past
(http://permalink.gmane.org/gmane.linux.ports.arm.kernel/290780). This round has taken into account the comments I had received on this early version.* Patches 5, 6, 7 and 8 add the coherency support itself. Patch 4 enables the SCU, patch 5 adds I/O coherency support for 375, patch 6 adds a major workaround to make coherency support actually work on early 375 SOCs and patch 7 adds I/O coherency support for 38x.
* Patches 9 and 10 add the necessary Device Tree informations to enable the coherency.
Best regards,
Thomas
Thomas Petazzoni (10):
ARM: mvebu: prepare coherency code to support more SOCs
ARM: mvebu: add acoherency_available()call
bus: mvebu: pass the coherency availability information at init time
ARM: mvebu: ARM: mvebu: useof_find_matching_node_and_match()in
coherency.c
ARM: mvebu: enable the ARM SCU on Armada 375 and Armada 38x
ARM: mvebu: add Armada 375 support to the coherency code
ARM: mvebu: implement Armada 375 coherency workaround
ARM: mvebu: add Armada 38x support to the coherency code
ARM: mvebu: enable the coherency fabric on Armada 375
ARM: mvebu: enable the coherency fabric on Armada 38x.../devicetree/bindings/arm/coherency-fabric.txt | 32 ++- arch/arm/boot/dts/armada-375.dtsi | 10 + arch/arm/boot/dts/armada-38x.dtsi | 10 + arch/arm/mach-kirkwood/board-dt.c | 2 +- arch/arm/mach-mvebu/Kconfig | 2 + arch/arm/mach-mvebu/board-v7.c | 21 +- arch/arm/mach-mvebu/coherency.c | 251 +++++++++++++++++++-- arch/arm/mach-mvebu/coherency.h | 1 + drivers/bus/mvebu-mbus.c | 11 +- include/linux/mbus.h | 2 +- 10 files changed, 305 insertions(+), 37 deletions(-)
Signature · 3 lines
Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com