arm: omap: irq: use compatible flag to figure out number of IRQ lines

so far, only am33xx has 128 lines, all other devices
have only 96.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 97845df61030..7a4ead3684d9 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -310,6 +310,9 @@ static int __init intc_of_init(struct device_node *node,
                 return -EINVAL;
         }
 
+        if (of_device_is_compatible(node, "ti,am33xx-intc"))
+                nr_irq = 128;
+
         if (of_property_read_u32(node, "ti,intc-size", &nr_irq))
                 pr_warn("unable to get intc-size, default to %d\n", nr_irq);