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38 lines
1.7 KiB
38 lines
1.7 KiB
Amlogic meson GPIO interrupt controller |
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Meson SoCs contains an interrupt controller which is able to watch the SoC |
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pads and generate an interrupt on edge or level. The controller is essentially |
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a 256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge |
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or level and polarity. It does not expose all 256 mux inputs because the |
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documentation shows that the upper part is not mapped to any pad. The actual |
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number of interrupt exposed depends on the SoC. |
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Required properties: |
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- compatible : must have "amlogic,meson8-gpio-intc" and either |
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"amlogic,meson8-gpio-intc" for meson8 SoCs (S802) or |
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"amlogic,meson8b-gpio-intc" for meson8b SoCs (S805) or |
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"amlogic,meson-gxbb-gpio-intc" for GXBB SoCs (S905) or |
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"amlogic,meson-gxl-gpio-intc" for GXL SoCs (S905X, S912) |
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"amlogic,meson-axg-gpio-intc" for AXG SoCs (A113D, A113X) |
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"amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2) |
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"amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3) |
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"amlogic,meson-a1-gpio-intc" for A1 SoCs (A113L) |
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"amlogic,meson-s4-gpio-intc" for S4 SoCs (S802X2, S905Y4, S805X2G, S905W2) |
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- reg : Specifies base physical address and size of the registers. |
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- interrupt-controller : Identifies the node as an interrupt controller. |
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- #interrupt-cells : Specifies the number of cells needed to encode an |
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interrupt source. The value must be 2. |
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- meson,channel-interrupts: Array with the 8 upstream hwirq numbers. These |
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are the hwirqs used on the parent interrupt controller. |
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Example: |
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gpio_interrupt: interrupt-controller@9880 { |
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compatible = "amlogic,meson-gxbb-gpio-intc", |
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"amlogic,meson-gpio-intc"; |
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reg = <0x0 0x9880 0x0 0x10>; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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meson,channel-interrupts = <64 65 66 67 68 69 70 71>; |
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};
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