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    SubjectRe: [PATCH v5] arm: pxa: support ICP DAS LP-8x4x FPGA irq
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    On Fri, 2015-12-18 at 21:58 -0600, Rob Herring wrote:
    > On Tue, Dec 15, 2015 at 10:26:21PM +0300, Sergei Ianovich wrote:
    > > +Example:
    > > +
    > > + fpga: fpga@17000006 {
    >
    > Nothing else in the fpga? In any case, this node should be named
    > interrupt-controller@17000006.
    >
    > > + compatible = "icpdas,irq-lp8x4x";
    >
    > As pointed out in the uart binding, don't use wildcards here.
    >
    > > + reg = <0x17000006 0x16>;
    > > + interrupt-parent = <&gpio>;
    > > + interrupts = <3 IRQ_TYPE_EDGE_RISING>;
    > > + #interrupt-cells = <1>;
    > > + interrupt-controller;
    > > + status = "okay";
    > > + };
    > > +
    > > + uart@17009050 {
    > > + compatible = "icpdas,uart-lp8x4x";
    > > + reg = <0x17009050 0x10
    > > +        0x17009030 0x02>;
    > > + interrupt-parent = <&fpga>;
    > > + interrupts = <13>;
    > > + status = "okay";
    > > + };

    That was just an example. The actual binding in LP-8x4x is bigger:
                    fpga@5 {
                            compatible = "simple-bus";
                            #address-cells = <1>;
                            #size-cells = <1>;
                            ranges = <0 5 0x3000000 0x10000>;
                            interrupt-parent = <&fpgairq>;

                            rtc@901c {
                                    compatible = "dallas,rtc-ds1302";
                                    reg = <0x901c 0x1>;
                                    status = "okay";
                            };

                            sram@a000 {
                                    compatible = "icpdas,sram-lp8x4x";
                                    reg = <0xa000 0x1000
                                           0x901e 0x1>;

                                    partitions {
                                            #address-cells = <1>;
                                            #size-cells = <1>;
                                    };
                            };

                            fpgairq: irq@9006 {
                                    compatible = "icpdas,irq-lp8x4x";
                                    reg = <0x9006 0x16>;
                                    interrupt-parent = <&gpio>;
                                    interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
                                    #interrupt-cells = <1>;
                                    interrupt-controller;
                                    status = "okay";
                            };

                            uart@9050 {
                                    compatible = "icpdas,uart-lp8x4x";
                                    reg = <0x9050 0x10
                                           0x9030 0x02>;
                                    interrupts = <13>;
                                    status = "okay";
                            };

                            uart@9060 {
                                    compatible = "icpdas,uart-lp8x4x";
                                    reg = <0x9060 0x10
                                           0x9032 0x02>;
                                    interrupts = <14>;
                                    status = "okay";
                            };

                            uart@9070 {
                                    compatible = "icpdas,uart-lp8x4x";
                                    reg = <0x9070 0x10
                                           0x9034 0x02>;
                                    interrupts = <15>;
                                    status = "okay";
                            };

                            backplane {
                                    compatible = "icpdas,backplane-lp8x4x";
                                    reg = <0x0 0x2
                                           0x1000 0x10
                                           0x2000 0x10
                                           0x3000 0x10
                                           0x4000 0x10
                                           0x5000 0x10
                                           0x6000 0x10
                                           0x7000 0x10
                                           0x8000 0x10
                                           0x9002 0x2
                                           0x9004 0x2
                                           0x9046 0x2>;
                                    eeprom-gpios = <&gpio 4 0>;
                            };
                    };


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