diff --git a/arch/blackfin/mach-bf548/boards/ezkit.c b/arch/blackfin/mach-bf548/boards/ezkit.c
index d22515d..628f218 100644
--- a/arch/blackfin/mach-bf548/boards/ezkit.c
+++ b/arch/blackfin/mach-bf548/boards/ezkit.c
@@ -559,7 +559,7 @@
 {
 	.modalias		= "ad7877",
 	.platform_data		= &bfin_ad7877_ts_info,
-	.irq			= IRQ_PJ11,
+	.irq			= IRQ_PJ11,	/* newer boards (Rev 1.4+) use IRQ_PB4 */
 	.max_speed_hz		= 12500000,     /* max spi clock (SCK) speed in HZ */
 	.bus_num		= 0,
 	.chip_select  		= 2,