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author | Max Filippov <jcmvbkbc@gmail.com> | 2014-10-07 00:45:13 +0400 |
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committer | Max Filippov <jcmvbkbc@gmail.com> | 2015-04-13 09:02:45 +0300 |
commit | b67c961cb86c2e296742c4e86096effb1f2c6ab8 (patch) | |
tree | 4b90fd27dcc3dbbea5c81b865fdcae664fe27b40 /Documentation/devicetree/bindings/interrupt-controller | |
parent | 24e94454c8cb6a13634f5a2f5a01da53a546a58d (diff) | |
download | op-kernel-dev-b67c961cb86c2e296742c4e86096effb1f2c6ab8.zip op-kernel-dev-b67c961cb86c2e296742c4e86096effb1f2c6ab8.tar.gz |
irqchip: xtensa-pic: xtensa-mx: document DT bindings
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller')
-rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-mx.txt | 18 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-pic.txt | 25 |
2 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-mx.txt b/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-mx.txt new file mode 100644 index 0000000..d4de980 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-mx.txt @@ -0,0 +1,18 @@ +* Xtensa Interrupt Distributor and Programmable Interrupt Controller (MX) + +Required properties: +- compatible: Should be "cdns,xtensa-mx". + +Remaining properties have exact same meaning as in Xtensa PIC +(see cdns,xtensa-pic.txt). + +Examples: + pic: pic { + compatible = "cdns,xtensa-mx"; + /* one cell: internal irq number, + * two cells: second cell == 0: internal irq number + * second cell == 1: external irq number + */ + #interrupt-cells = <2>; + interrupt-controller; + }; diff --git a/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-pic.txt b/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-pic.txt new file mode 100644 index 0000000..026ef4c --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/cdns,xtensa-pic.txt @@ -0,0 +1,25 @@ +* Xtensa built-in Programmable Interrupt Controller (PIC) + +Required properties: +- compatible: Should be "cdns,xtensa-pic". +- interrupt-controller: Identifies the node as an interrupt controller. +- #interrupt-cells: The number of cells to define the interrupts. + It may be either 1 or 2. + When it's 1, the first cell is the internal IRQ number. + When it's 2, the first cell is the IRQ number, and the second cell + specifies whether it's internal (0) or external (1). + Periferals are usually connected to a fixed external IRQ, but for different + core variants it may be mapped to different internal IRQ. + IRQ sensitivity and priority are fixed for each core variant and may not be + changed at runtime. + +Examples: + pic: pic { + compatible = "cdns,xtensa-pic"; + /* one cell: internal irq number, + * two cells: second cell == 0: internal irq number + * second cell == 1: external irq number + */ + #interrupt-cells = <2>; + interrupt-controller; + }; |