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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt')
-rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt b/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt new file mode 100644 index 000000000..0bfb3ba55 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc3220-mic.txt @@ -0,0 +1,58 @@ +* NXP LPC32xx MIC, SIC1 and SIC2 Interrupt Controllers + +Required properties: +- compatible: "nxp,lpc3220-mic" or "nxp,lpc3220-sic". +- reg: should contain IC registers location and length. +- interrupt-controller: identifies the node as an interrupt controller. +- #interrupt-cells: the number of cells to define an interrupt, should be 2. + The first cell is the IRQ number, the second cell is used to specify + one of the supported IRQ types: + IRQ_TYPE_EDGE_RISING = low-to-high edge triggered, + IRQ_TYPE_EDGE_FALLING = high-to-low edge triggered, + IRQ_TYPE_LEVEL_HIGH = active high level-sensitive, + IRQ_TYPE_LEVEL_LOW = active low level-sensitive. + Reset value is IRQ_TYPE_LEVEL_LOW. + +Optional properties: +- interrupts: empty for MIC interrupt controller, cascaded MIC + hardware interrupts for SIC1 and SIC2 + +Examples: + + /* LPC32xx MIC, SIC1 and SIC2 interrupt controllers */ + mic: interrupt-controller@40008000 { + compatible = "nxp,lpc3220-mic"; + reg = <0x40008000 0x4000>; + interrupt-controller; + #interrupt-cells = <2>; + }; + + sic1: interrupt-controller@4000c000 { + compatible = "nxp,lpc3220-sic"; + reg = <0x4000c000 0x4000>; + interrupt-controller; + #interrupt-cells = <2>; + + interrupt-parent = <&mic>; + interrupts = <0 IRQ_TYPE_LEVEL_LOW>, + <30 IRQ_TYPE_LEVEL_LOW>; + }; + + sic2: interrupt-controller@40010000 { + compatible = "nxp,lpc3220-sic"; + reg = <0x40010000 0x4000>; + interrupt-controller; + #interrupt-cells = <2>; + + interrupt-parent = <&mic>; + interrupts = <1 IRQ_TYPE_LEVEL_LOW>, + <31 IRQ_TYPE_LEVEL_LOW>; + }; + + /* ADC */ + adc@40048000 { + compatible = "nxp,lpc3220-adc"; + reg = <0x40048000 0x1000>; + interrupt-parent = <&sic1>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + }; |