--- zzzz-none-000/linux-4.1.38/arch/mips/include/asm/mach-generic/irq.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/arch/mips/include/asm/mach-generic/irq.h	2020-11-25 10:06:48.000000000 +0000
@@ -8,6 +8,11 @@
 #ifndef __ASM_MACH_GENERIC_IRQ_H
 #define __ASM_MACH_GENERIC_IRQ_H
 
+#if defined(CONFIG_BCM_KF_MIPS_BCM963XX) && (defined(CONFIG_BCM96838) || defined(CONFIG_BCM96848))
+#ifndef NR_IRQS
+#define NR_IRQS	256
+#endif
+#endif
 #ifndef NR_IRQS
 #define NR_IRQS 128
 #endif