Hi,
I am using ZynqMP with the FPGA. I have designed an AXI Gpio in the FPGA and I
am able to control it through non-root cell Linux. Nevertheless, I want to
assign an IRQ to the Input GPIO. However, I do not know how pin_base and
pin_bitmap works in GIC configuration. The AXI Gpio DTS part is:
axi_gpio_0: gpio@a0000000 {
#gpio-cells = <2>;
#interrupt-cells = <2>;
compatible = "xlnx,xps-gpio-1.00.a";
gpio-controller ;
interrupt-controller ;
interrupt-parent = <&gic>;
interrupts = <0 89 4>;
reg = <0x0 0xa0000000 0x0 0x1000>;
xlnx,all-inputs = <0x0>;
xlnx,all-inputs-2 = <0x0>;
xlnx,all-outputs = <0x0>;
xlnx,all-outputs-2 = <0x0>;
xlnx,dout-default = <0x00000000>;
xlnx,dout-default-2 = <0x00000000>;
xlnx,gpio-width = <0x2>;
xlnx,gpio2-width = <0x20>;
xlnx,interrupt-present = <0x1>;
xlnx,is-dual = <0x0>;
xlnx,tri-default = <0xFFFFFFFF>;
xlnx,tri-default-2 = <0xFFFFFFFF>;
};
How do I need to assign the IRQ in the GIC conf. The default GIC conf is:
.irqchips = {
/* GIC */ {
.address = 0xf9010000,
.pin_base = 32,
.pin_bitmap = {
1 << (54 - 32),
0,
0,
(1 << (140 - 128)) | (1 << (142 - 128))
},
},
},
PD: I do not know why, but in order to put the GPIOs working I had to delete
the ".pci_devices" data from the root cell conf file.
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