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Altera_Forum
Honored Contributor I
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Device Tree - Registering IRQ in Linux GIC

Hello everyone. 

 

I've done some design using Qsys and I'm trying to get my Device Tree to work. I took the *.dtb from GHRD and changed to a *.dts (so I would be able to modify it as I wish). 

 

Also, I generated the device tree through sopc2dts (I guess this is the command) and the *.dtb file it generates doesn't boot my board, so something is getting messed up. What I did in order to solve the problem is the following: I took the IPs that are are inside the hps_0_bridges: bridge@c0000000 and I put the IPs that I use in my qsys design. 

 

msgdma@0x100000000 { compatible = "altr,msgdma-15.0", "altr,msgdma-1.0"; reg = <0x00000001 0x00000000 0x00000020>, <0x00000001 0x00000020 0x00000010>; reg-names = "CSR", "Descriptor_Slave"; interrupt-parent = <&hps_0_arm_gic_0>; interrupts = <0 43 4>; clocks = <&clk_0>; }; hps_0_arm_gic_0: intc@fffed000 { compatible = "arm,cortex-a9-gic-15.0", "arm,cortex-a9-gic"; # interrupt-cells = <3>; interrupt-controller; reg = <0xfffed000 0x1000 0xfffec100 0x100>; reg-names = "axi_slave0", "axi_slave1"; linux,phandle = <0x2>; phandle = <0x2>; };  

 

The thing is I can't register the interrupt 43 onto GIC... (I only checked the proc/interrupts file) 

 

https://alteraforum.com/forum/attachment.php?attachmentid=13492&stc=1  

 

Anyone knows what might be causing the problem? Currently I can use all my peripherals from lw and my fpga2sdram bus. This mSGDMA writes to the ARM SDRAM, and the design works well, but I can't get this IRQ thing to work. 

 

Thanks in advance!
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1 Reply
Altera_Forum
Honored Contributor I
114 Views

 

--- Quote Start ---  

Hello everyone. 

 

I've done some design using Qsys and I'm trying to get my Device Tree to work. I took the *.dtb from GHRD and changed to a *.dts (so I would be able to modify it as I wish). 

 

Also, I generated the device tree through sopc2dts (I guess this is the command) and the *.dtb file it generates doesn't boot my board, so something is getting messed up. What I did in order to solve the problem is the following: I took the IPs that are are inside the hps_0_bridges: bridge@c0000000 and I put the IPs that I use in my qsys design. 

 

msgdma@0x100000000 { compatible = "altr,msgdma-15.0", "altr,msgdma-1.0"; reg = <0x00000001 0x00000000 0x00000020>, <0x00000001 0x00000020 0x00000010>; reg-names = "CSR", "Descriptor_Slave"; interrupt-parent = <&hps_0_arm_gic_0>; interrupts = <0 43 4>; clocks = <&clk_0>; }; hps_0_arm_gic_0: intc@fffed000 { compatible = "arm,cortex-a9-gic-15.0", "arm,cortex-a9-gic"; # interrupt-cells = <3>; interrupt-controller; reg = <0xfffed000 0x1000 0xfffec100 0x100>; reg-names = "axi_slave0", "axi_slave1"; linux,phandle = <0x2>; phandle = <0x2>; };  

 

The thing is I can't register the interrupt 43 onto GIC... (I only checked the proc/interrupts file) 

 

https://alteraforum.com/forum/attachment.php?attachmentid=13492&stc=1  

 

Anyone knows what might be causing the problem? Currently I can use all my peripherals from lw and my fpga2sdram bus. This mSGDMA writes to the ARM SDRAM, and the design works well, but I can't get this IRQ thing to work. 

 

Thanks in advance! 

--- Quote End ---  

 

 

For those who might be struggling with the same stuff... I have developed a device driver which runs some come in the kernel that deals with the hardware from FPGA.
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