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
