On Thu, 11 Dec 2014, Steffen Trumtrar wrote: CC Matthew Gerlach > Hi! > > This series adds support for the SoCFPGA bridges. > > From the datasheet: > > The HPS-FPGA bridges allow masters in the FPGA fabric to > communicate with slaves in the HPS logic and vice versa. > For example, you can instantiate additional memories or > peripherals in the FPGA fabric, and master interfaces > belonging to components in the HPS logic can access them. > You can also instantiate components such as a NiosII > processor in the FPGA fabric and their master interfaces > can access memories or peripherals in the HPS logic > > This does only work with the driver from my other series > > SoCFPGA: L3 NIC driver > > As the binding, although simple, is still in debate and the > outcome may have impact on this series, this is a just an RFC > for now. > > Also, the drivers beg for the DT overlay series which is floating > around, but this shouldn't have any effect on the current binding. > The driver part can be changed later. > > Lastly, the bridges have an optional dependency on the fpgamgr > series from Alan Tull. I have added this to the binding, the drivers > don't do anything with this yet. > My idea here would be: > 1. probe bridge > 2. check if fpgamgr phandle is given > 2a. if yes: defer till fpgamgr is done > 2b. if no: continue > 3. probe subnodes with the help of DT overlays > > I have only tested the HPS and LWHPS drivers, as I don't have any > bitstreams that use the FPGA2HPS bridge; here be dragons. > > Regards, > Steffen > > Steffen Trumtrar (3): > devicetree: bindings: Add SoCFpga HPS bridges > ARM: socfpga: Add drivers for the SoC-to-FPGA bridges > ARM: dts: socfpga: Add AXI bridges > > .../soc/socfpga/altr,fpga2hps-axi-bridge.txt | 32 +++ > .../soc/socfpga/altr,hps2fpga-axi-bridge.txt | 54 +++++ > .../soc/socfpga/altr,lwhps2fpga-axi-bridge.txt | 31 +++ > arch/arm/boot/dts/socfpga.dtsi | 48 ++++ > drivers/soc/socfpga/Kconfig | 43 ++++ > drivers/soc/socfpga/Makefile | 4 + > drivers/soc/socfpga/bridges-common.c | 84 +++++++ > drivers/soc/socfpga/bridges-common.h | 28 +++ > drivers/soc/socfpga/fpga2hps-bridge.c | 97 ++++++++ > drivers/soc/socfpga/hps2fpga-bridge.c | 258 +++++++++++++++++++++ > drivers/soc/socfpga/lwhps2fpga-bridge.c | 141 +++++++++++ > drivers/soc/socfpga/lwhps2fpga.h | 31 +++ > include/soc/socfpga/bridge.h | 65 ++++++ > 13 files changed, 916 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/socfpga/altr,fpga2hps-axi-bridge.txt > create mode 100644 Documentation/devicetree/bindings/soc/socfpga/altr,hps2fpga-axi-bridge.txt > create mode 100644 Documentation/devicetree/bindings/soc/socfpga/altr,lwhps2fpga-axi-bridge.txt > create mode 100644 drivers/soc/socfpga/Kconfig > create mode 100644 drivers/soc/socfpga/Makefile > create mode 100644 drivers/soc/socfpga/bridges-common.c > create mode 100644 drivers/soc/socfpga/bridges-common.h > create mode 100644 drivers/soc/socfpga/fpga2hps-bridge.c > create mode 100644 drivers/soc/socfpga/hps2fpga-bridge.c > create mode 100644 drivers/soc/socfpga/lwhps2fpga-bridge.c > create mode 100644 drivers/soc/socfpga/lwhps2fpga.h > create mode 100644 include/soc/socfpga/bridge.h > > -- > 2.1.3 > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
