Enable FPGA's IRQ controller. It is in charge of dispatching interrupts
generated by IPs in the FPGA. The SoC is notified that an interrupt
occurred through a GPIO.

Signed-off-by: Damien Riegel <[email protected]>
---
Changes in v2:
 - Remove new lines
 - Use hyphen rather than underscore in node name
 - Get rid of "0," in unit-address
 - Move node to keep them sorted by unit-address

 arch/arm/boot/dts/imx51-ts4800.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/boot/dts/imx51-ts4800.dts 
b/arch/arm/boot/dts/imx51-ts4800.dts
index 0ff76a1..0e80fb7 100644
--- a/arch/arm/boot/dts/imx51-ts4800.dts
+++ b/arch/arm/boot/dts/imx51-ts4800.dts
@@ -165,6 +165,17 @@
                        reg = <0x12000 0x1000>;
                        syscon = <&syscon 0x10 6>;
                };
+
+               fpga_irqc: fpga-irqc@15000 {
+                       compatible = "technologic,ts4800-irqc";
+                       reg = <0x15000 0x1000>;
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&pinctrl_interrupt_fpga>;
+                       interrupt-parent = <&gpio2>;
+                       interrupts= <9 IRQ_TYPE_LEVEL_HIGH>;
+                       interrupt-controller;
+                       #interrupt-cells = <1>;
+               };
        };
 };
 
@@ -228,6 +239,12 @@
                >;
        };
 
+       pinctrl_interrupt_fpga: fpgaicgrp {
+               fsl,pins = <
+                       MX51_PAD_EIM_D27__GPIO2_9               0xe5
+               >;
+       };
+
        pinctrl_lcd: lcdgrp {
                fsl,pins = <
                        MX51_PAD_DISP1_DAT0__DISP1_DAT0         0x5
-- 
2.5.0

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