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authorKyle Moffett <Kyle.D.Moffett@boeing.com>2011-12-22 11:19:13 +0100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-02-23 00:50:00 +0100
commitc1b8d45db4dbc64cc6015f97922f767fdf782f64 (patch)
treec23f986f6601b2f67645eca5b8744c8d753bc094 /arch/powerpc/boot
parentpowerpc/mpic: Remove MPIC_BROKEN_FRR_NIRQS and duplicate irq_count (diff)
downloadlinux-c1b8d45db4dbc64cc6015f97922f767fdf782f64.tar.xz
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powerpc/mpic: Add "last-interrupt-source" property to override hardware
The FreeScale PowerQUICC-III-compatible (mpc85xx/mpc86xx) MPICs do not correctly report the number of hardware interrupt sources, so software needs to override the detected value with "256". To avoid needing to write custom board-specific code to detect that scenario, allow it to be easily overridden in the device-tree. Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/boot')
-rw-r--r--arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi b/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi
index 658bd81982cb..fdedf7b1fe0f 100644
--- a/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi
+++ b/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi
@@ -41,6 +41,7 @@ mpic: pic@40000 {
device_type = "open-pic";
big-endian;
single-cpu-affinity;
+ last-interrupt-source = <255>;
};
timer@41100 {