From d85f6b93a76e74f1cbd0c14fb685cc1bc8df9044 Mon Sep 17 00:00:00 2001 From: Mischa Jonker Date: Wed, 24 Jul 2019 14:04:36 +0200 Subject: dt-bindings: IDU-intc: Add support for edge-triggered interrupts This updates the documentation for supporting an optional extra interrupt cell to specify edge vs level triggered. Signed-off-by: Mischa Jonker Reviewed-by: Rob Herring Signed-off-by: Vineet Gupta --- .../interrupt-controller/snps,archs-idu-intc.txt | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) (limited to 'Documentation/devicetree/bindings/interrupt-controller') diff --git a/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt index c5a1c7b4fc3f..a5c1db95b3ec 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt @@ -8,11 +8,20 @@ Properties: - compatible: "snps,archs-idu-intc" - interrupt-controller: This is an interrupt controller. -- #interrupt-cells: Must be <1>. - - Value of the cell specifies the "common" IRQ from peripheral to IDU. Number N - of the particular interrupt line of IDU corresponds to the line N+24 of the - core interrupt controller. +- #interrupt-cells: Must be <1> or <2>. + + Value of the first cell specifies the "common" IRQ from peripheral to IDU. + Number N of the particular interrupt line of IDU corresponds to the line N+24 + of the core interrupt controller. + + The (optional) second cell specifies any of the following flags: + - bits[3:0] trigger type and level flags + 1 = low-to-high edge triggered + 2 = NOT SUPPORTED (high-to-low edge triggered) + 4 = active high level-sensitive <<< DEFAULT + 8 = NOT SUPPORTED (active low level-sensitive) + When no second cell is specified, the interrupt is assumed to be level + sensitive. The interrupt controller is accessed via the special ARC AUX register interface, hence "reg" property is not specified. -- cgit v1.2.3