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| author | Lee Jones <lee.jones@linaro.org> | 2015-02-18 15:13:59 +0000 |
|---|---|---|
| committer | Jason Cooper <jason@lakedaemon.net> | 2015-03-03 19:50:02 +0000 |
| commit | f1f5bc30f5726ff28fa1b263edcd805cced84a07 (patch) | |
| tree | 9a7e9094e1d0adb52fc1ac07a37282303438a7e3 /Documentation/devicetree | |
| parent | 070884845baaeaa41a11eccc2fc2a4080de64946 (diff) | |
| download | talos-obmc-linux-f1f5bc30f5726ff28fa1b263edcd805cced84a07.tar.gz talos-obmc-linux-f1f5bc30f5726ff28fa1b263edcd805cced84a07.zip | |
irqchip: st: Add documentation for STi based syscfg IRQs
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lkml.kernel.org/r/1424272444-16230-4-git-send-email-lee.jones@linaro.org
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt b/Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt new file mode 100644 index 000000000000..ced6014061a3 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt @@ -0,0 +1,35 @@ +STMicroelectronics STi System Configuration Controlled IRQs +----------------------------------------------------------- + +On STi based systems; External, CTI (Core Sight), PMU (Performance Management), +and PL310 L2 Cache IRQs are controlled using System Configuration registers. +This driver is used to unmask them prior to use. + +Required properties: +- compatible : Should be set to one of: + "st,stih415-irq-syscfg" + "st,stih416-irq-syscfg" + "st,stih407-irq-syscfg" + "st,stid127-irq-syscfg" +- st,syscfg : Phandle to Cortex-A9 IRQ system config registers +- st,irq-device : Array of IRQs to enable - should be 2 in length +- st,fiq-device : Array of FIQs to enable - should be 2 in length + +Optional properties: +- st,invert-ext : External IRQs can be inverted at will. This property inverts + these IRQs using bitwise logic. A number of defines have been + provided for convenience: + ST_IRQ_SYSCFG_EXT_1_INV + ST_IRQ_SYSCFG_EXT_2_INV + ST_IRQ_SYSCFG_EXT_3_INV +Example: + +irq-syscfg { + compatible = "st,stih416-irq-syscfg"; + st,syscfg = <&syscfg_cpu>; + st,irq-device = <ST_IRQ_SYSCFG_PMU_0>, + <ST_IRQ_SYSCFG_PMU_1>; + st,fiq-device = <ST_IRQ_SYSCFG_DISABLED>, + <ST_IRQ_SYSCFG_DISABLED>; + st,invert-ext = <(ST_IRQ_SYSCFG_EXT_1_INV | ST_IRQ_SYSCFG_EXT_3_INV)>; +}; |
