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author | Nishanth Menon <nm@ti.com> | 2014-06-26 12:40:22 +0530 |
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committer | Jason Cooper <jason@lakedaemon.net> | 2014-06-30 19:11:20 +0000 |
commit | a35057d1dcb11ae67c9347ef7987cf65ac743c36 (patch) | |
tree | b338c3dcaf1ffae0d5e59c0f29040150c38a8865 /Documentation/devicetree/bindings/arm/omap | |
parent | 64e0f8ba5cae74471f72e0cb218c67915e365f47 (diff) | |
download | op-kernel-dev-a35057d1dcb11ae67c9347ef7987cf65ac743c36.zip op-kernel-dev-a35057d1dcb11ae67c9347ef7987cf65ac743c36.tar.gz |
irqchip: crossbar: Initialise the crossbar with a safe value
Since crossbar is s/w configurable, the initial settings of the
crossbar cannot be assumed to be sane. This implies that:
a) On initialization all un-reserved crossbars must be initialized to
a known 'safe' value.
b) When unmapping the interrupt, the safe value must be written to
ensure that the crossbar mapping matches with interrupt controller
usage.
So provide a safe value in the dt data to map if
'0' is not safe for the platform and use it during init and unmap
While at this, fix the below checkpatch warning.
Fixes checkpatch warning:
WARNING: Unnecessary space before function pointer arguments
#37: FILE: drivers/irqchip/irq-crossbar.c:37:
+ void (*write) (int, int);
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Sricharan R <r.sricharan@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Link: https://lkml.kernel.org/r/1403766634-18543-5-git-send-email-r.sricharan@ti.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'Documentation/devicetree/bindings/arm/omap')
-rw-r--r-- | Documentation/devicetree/bindings/arm/omap/crossbar.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/omap/crossbar.txt b/Documentation/devicetree/bindings/arm/omap/crossbar.txt index 07957657..5f45c78 100644 --- a/Documentation/devicetree/bindings/arm/omap/crossbar.txt +++ b/Documentation/devicetree/bindings/arm/omap/crossbar.txt @@ -22,6 +22,9 @@ Optional properties: SOC-specific hard-wiring of those irqs which unexpectedly bypasses the crossbar. These irqs have a crossbar register, but still cannot be used. +- ti,irqs-safe-map: integer which maps to a safe configuration to use + when the interrupt controller irq is unused (when not provided, default is 0) + Examples: crossbar_mpu: @4a020000 { compatible = "ti,irq-crossbar"; |