Arria 10 : HPS to FPGA Bridge Enable

Hello,

I am using Arria 10 SoC on custom board and want to design a program for HPS and FPGA communication. In the manuals I read that we need to enable the bridges for HPS and FPGA communication .

I have generated dtb file using sopc2dts tool and used the board info xml files.

The linux dts file includes the bridges address but no bridge enable command is included:

sopc0: sopc@0 {

device_type = "soc";

ranges;

#address-cells = <1>;

#size-cells = <1>;

compatible = "ALTR,avalon", "simple-bus";

bus-frequency = <0>;

a10_hps_bridges: bridge@0xc0000000 {

compatible = "altr,bridge-17.1", "simple-bus";

reg = <0xc0000000 0x20000000>,

<0xff200000 0x00200000>;

reg-names = "axi_h2f", "axi_h2f_lw";

clocks = <&clk_0 &clk_0 &clk_0 &clk_0>;

clock-names = "h2f_axi_clock", "h2f_lw_axi_clock", "f2sdram0_clock", "f2sdram2_clock";

#address-cells = <2>;

#size-cells = <1>;

ranges = <0x00000000 0x00040000 0xc0040000 0x00000004>,

<0x00000000 0x00040004 0xc0040004 0x00000004>,

<0x00000000 0x00000000 0xc0000000 0x00040000>,

<0x00000001 0x00000000 0xff200000 0x00000020>,

<0x00000001 0x00000020 0xff200020 0x00000020>,

<0x00000001 0x00000200 0xff200200 0x00000100>,

<0x00000001 0x00000330 0xff200330 0x00000008>,

<0x00000001 0x00000320 0xff200320 0x00000010>,

<0x00000001 0x00000310 0xff200310 0x00000010>,

<0x00000001 0x00000300 0xff200300 0x00000010>;

On booting , no message of bridge initialisation is printed on console output.

The commnad : dmesg | grep fpga prints following output-

[ 1.117432] socfpga-dwmac ff800000.ethernet: PTP uses main clock

[ 1.123676] socfpga-dwmac ff800000.ethernet: User ID: 0x10, Synopsys ID: 0x37

[ 1.130827] socfpga-dwmac ff800000.ethernet: DWMAC1000

[ 1.136046] socfpga-dwmac ff800000.ethernet: DMA HW capability register suppd

[ 1.143497] socfpga-dwmac ff800000.ethernet: RX Checksum Offload Engine suppd

[ 1.150957] socfpga-dwmac ff800000.ethernet: COE Type 2

[ 1.156170] socfpga-dwmac ff800000.ethernet: TX Checksum insertion supported

[ 1.163187] socfpga-dwmac ff800000.ethernet: Enhanced/Alternate descriptors

[ 1.170127] socfpga-dwmac ff800000.ethernet: Enabled extended descriptors

[ 1.176895] socfpga-dwmac ff800000.ethernet: Ring mode enabled

[ 1.182703] socfpga-dwmac ff800000.ethernet: Enable RX Mitigation via HW Watr

[ 1.371423] fpga_manager fpga0: SoCFPGA Arria10 FPGA Manager registered

[ 2.907781] systemd[1]: Configuration file /lib/systemd/system/fpga-overlay..

[ 6.566431] socfpga-dwmac ff800000.ethernet eth0: No Safety Features supportd

[ 6.574028] socfpga-dwmac ff800000.ethernet eth0: IEEE 1588-2008 Advanced Tid

[ 6.583696] socfpga-dwmac ff800000.ethernet eth0: registered PTP clock

I need to enable the bridges also read and write some data from HPS to FPGA . I also tried to read and write over memory(addresses of bridges) using mw and md commands at uboot level . But there is data abort error and the commands are resetting the CPU .

Could anyone please help with the same.

Thanks ,

Priya