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authorSerge Semin <Sergey.Semin@baikalelectronics.ru>2020-05-26 14:59:26 +0200
committerArnd Bergmann <arnd@arndb.de>2020-05-28 14:11:53 +0200
commit63cb77136e04ff24ca520e46f5ff57d351dadbdb (patch)
tree7e3869a698b602baa44013a4cc3fc52844e5c2e9 /drivers/fpga
parentdt-bindings: bus: Add Baikal-T1 APB-bus binding (diff)
downloadlinux-63cb77136e04ff24ca520e46f5ff57d351dadbdb.tar.xz
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bus: Add Baikal-T1 AXI-bus driver
AXI3-bus is the main communication bus connecting all high-speed peripheral IP-cores with RAM controller and MIPS P5600 cores on Baikal-T1 SoC. Bus traffic arbitration is done by means of DW AMBA 3 AXI Interconnect (so called AXI Main Interconnect) routing IO requests from one SoC block to another. This driver provides a way to detect any bus protocol errors and device not responding situations by means of an embedded on top of the interconnect errors handler block (EHB). AXI Interconnect QoS arbitration tuning is currently unsupported. The bus doesn't provide a way to detect the interconnected devices, so they are supposed to be statically defined like by means of the simple-bus sub-nodes. [arnd: fix build warnings for missing includes and wrong return types] Link: https://lore.kernel.org/r/20200526125928.17096-5-Sergey.Semin@baikalelectronics.ru Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Paul Burton <paulburton@kernel.org> Cc: Olof Johansson <olof@lixom.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-mips@vger.kernel.org Cc: soc@kernel.org Cc: devicetree@vger.kernel.org Reported-by: kbuild test robot <lkp@intel.com> Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/fpga')
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