1Amlogic meson GPIO interrupt controller 2 3Meson SoCs contains an interrupt controller which is able to watch the SoC 4pads and generate an interrupt on edge or level. The controller is essentially 5a 256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge 6or level and polarity. It does not expose all 256 mux inputs because the 7documentation shows that the upper part is not mapped to any pad. The actual 8number of interrupt exposed depends on the SoC. 9 10Required properties: 11 12- compatible : must have "amlogic,meson8-gpio-intc" and either 13 "amlogic,meson8-gpio-intc" for meson8 SoCs (S802) or 14 "amlogic,meson8b-gpio-intc" for meson8b SoCs (S805) or 15 "amlogic,meson-gxbb-gpio-intc" for GXBB SoCs (S905) or 16 "amlogic,meson-gxl-gpio-intc" for GXL SoCs (S905X, S912) 17 "amlogic,meson-axg-gpio-intc" for AXG SoCs (A113D, A113X) 18 "amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2) 19 "amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3) 20 "amlogic,meson-a1-gpio-intc" for A1 SoCs (A113L) 21 "amlogic,meson-s4-gpio-intc" for S4 SoCs (S802X2, S905Y4, S805X2G, S905W2) 22- reg : Specifies base physical address and size of the registers. 23- interrupt-controller : Identifies the node as an interrupt controller. 24- #interrupt-cells : Specifies the number of cells needed to encode an 25 interrupt source. The value must be 2. 26- meson,channel-interrupts: Array with the 8 upstream hwirq numbers. These 27 are the hwirqs used on the parent interrupt controller. 28 29Example: 30 31gpio_interrupt: interrupt-controller@9880 { 32 compatible = "amlogic,meson-gxbb-gpio-intc", 33 "amlogic,meson-gpio-intc"; 34 reg = <0x0 0x9880 0x0 0x10>; 35 interrupt-controller; 36 #interrupt-cells = <2>; 37 meson,channel-interrupts = <64 65 66 67 68 69 70 71>; 38}; 39