Messages in this thread Patch in this message | | | From | Ray Jui <> | Subject | [PATCH 1/2] dt-bindings: arm,gic: Indtroduce optional property 'arm,msi-offset-spi' for gicv2m | Date | Tue, 3 May 2016 16:47:24 -0700 |
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Update the GICv2m binding document by adding an optional property 'arm,msi-offset-spi'.
Some implementations of gicv2m have an erratum where the MSI data is the SPI number subtracted by an offset. This is required for the correct MSI interrupt to be triggered.
Signed-off-by: Ray Jui <ray.jui@broadcom.com> --- Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt index 793c20f..550960f 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt @@ -140,6 +140,12 @@ Optional properties: value, this property should contain the number of SPIs assigned to the frame, overriding the HW value. +- arm,msi-offset-spi: Some implementations of gicv2m have an erratum where + the MSI data is the SPI number subtracted by an offset. + This is required for the correct MSI interrupt to be + triggered. This property should contain the required + offset. + Example: interrupt-controller@e1101000 { -- 2.1.4
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