| Jerome Brunet | df48d3b | 2017-09-18 15:46:09 +0200 | [diff] [blame] | 1 | Amlogic meson GPIO interrupt controller |
| 2 | |
| 3 | Meson SoCs contains an interrupt controller which is able to watch the SoC |
| 4 | pads and generate an interrupt on edge or level. The controller is essentially |
| 5 | a 256 pads to 8 GIC interrupt multiplexer, with a filter block to select edge |
| 6 | or level and polarity. It does not expose all 256 mux inputs because the |
| 7 | documentation shows that the upper part is not mapped to any pad. The actual |
| 8 | number of interrupt exposed depends on the SoC. |
| 9 | |
| 10 | Required properties: |
| 11 | |
| Yixun Lan | 0e41635 | 2018-04-08 14:56:58 +0000 | [diff] [blame] | 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) |
| Yixun Lan | 3212dca | 2018-04-08 14:56:59 +0000 | [diff] [blame] | 17 | "amlogic,meson-axg-gpio-intc" for AXG SoCs (A113D, A113X) |
| Xingyu Chen | 5028bd6 | 2019-06-08 21:04:09 +0200 | [diff] [blame] | 18 | "amlogic,meson-g12a-gpio-intc" for G12A SoCs (S905D2, S905X2, S905Y2) |
| Jerome Brunet | abc08aa | 2019-08-29 18:16:34 +0200 | [diff] [blame] | 19 | "amlogic,meson-sm1-gpio-intc" for SM1 SoCs (S905D3, S905X3, S905Y3) |
| Qianggui Song | fd6765b | 2019-12-16 20:36:42 +0800 | [diff] [blame^] | 20 | "amlogic,meson-a1-gpio-intc" for A1 SoCs (A113L) |
| Jerome Brunet | df48d3b | 2017-09-18 15:46:09 +0200 | [diff] [blame] | 21 | - reg : Specifies base physical address and size of the registers. |
| 22 | - interrupt-controller : Identifies the node as an interrupt controller. |
| 23 | - #interrupt-cells : Specifies the number of cells needed to encode an |
| 24 | interrupt source. The value must be 2. |
| 25 | - meson,channel-interrupts: Array with the 8 upstream hwirq numbers. These |
| 26 | are the hwirqs used on the parent interrupt controller. |
| 27 | |
| 28 | Example: |
| 29 | |
| 30 | gpio_interrupt: interrupt-controller@9880 { |
| 31 | compatible = "amlogic,meson-gxbb-gpio-intc", |
| 32 | "amlogic,meson-gpio-intc"; |
| 33 | reg = <0x0 0x9880 0x0 0x10>; |
| 34 | interrupt-controller; |
| 35 | #interrupt-cells = <2>; |
| 36 | meson,channel-interrupts = <64 65 66 67 68 69 70 71>; |
| 37 | }; |