1 files changed, 20 insertions, 0 deletions

diff --git a/arch/arm/mach-shmobile/board-bockw-reference.c b/arch/arm/mach-shmobile/board-bockw-reference.c
index 1a7c893e1a52..ae88fdad4b3a 100644
--- a/arch/arm/mach-shmobile/board-bockw-reference.c
+++ b/arch/arm/mach-shmobile/board-bockw-reference.c
@@ -36,15 +36,35 @@ static const struct pinctrl_map bockw_pinctrl_map[] = {
                                   "scif0_ctrl", "scif0"),
 };
 
+#define FPGA    0x18200000
+#define IRQ0MR  0x30
+#define COMCTLR 0x101c
 static void __init bockw_init(void)
 {
+        static void __iomem *fpga;
+
         r8a7778_clock_init();
+        r8a7778_init_irq_extpin_dt(1);
 
         pinctrl_register_mappings(bockw_pinctrl_map,
                                   ARRAY_SIZE(bockw_pinctrl_map));
         r8a7778_pinmux_init();
         r8a7778_add_dt_devices();
 
+        fpga = ioremap_nocache(FPGA, SZ_1M);
+        if (fpga) {
+                /*
+                 * CAUTION
+                 *
+                 * IRQ0/1 is cascaded interrupt from FPGA.
+                 * it should be cared in the future
+                 * Now, it is assuming IRQ0 was used only from SMSC.
+                 */
+                u16 val = ioread16(fpga + IRQ0MR);
+                val &= ~(1 << 4); /* enable SMSC911x */
+                iowrite16(val, fpga + IRQ0MR);
+        }
+
         of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
 }