xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fsl/mpic: Create and document the "single-cpu-affinity" device-tree flag

Browse Source 
The Freescale MPIC (and perhaps others in the future) is incapable of
routing non-IPI interrupts to more than once CPU at a time.  Currently
all of the Freescale boards msut pass the MPIC_SINGLE_DEST_CPU flag to
mpic_alloc(), but that information should really be present in the
device-tree.

Older board code can't rely on the device-tree having the property set,
but newer platforms won't need it manually specified in the code.

[BenH: Remove unrelated changes, folded in a different patch]

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kyle Moffett
2011-12-22 10:19:11 +00:00
committed by Benjamin Herrenschmidt
parent 98cca250ae
commit 9ca163c860
3 changed files with 9 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/sysdev/mpic.c
View File

@@ -1187,6 +1187,8 @@ struct mpic * __init mpic_alloc(struct device_node *node,
flags |= MPIC_BIG_ENDIAN;
if (of_get_property(node, "pic-no-reset", NULL))
flags |= MPIC_NO_RESET;
if (of_get_property(node, "single-cpu-affinity", NULL))
flags |= MPIC_SINGLE_DEST_CPU;
if (of_device_is_compatible(node, "fsl,mpic"))
flags |= MPIC_FSL;