1 files changed, 3 insertions, 0 deletions

diff --git a/arch/mips/include/asm/mach-rc32434/gpio.h b/arch/mips/include/asm/mach-rc32434/gpio.h
index 3cb50d17b62d..12ee8d510160 100644
--- a/arch/mips/include/asm/mach-rc32434/gpio.h
+++ b/arch/mips/include/asm/mach-rc32434/gpio.h
@@ -80,6 +80,9 @@ struct rb532_gpio_reg {
 /* Compact Flash GPIO pin */
 #define CF_GPIO_NUM             13
 
+/* S1 button GPIO (shared with UART0_SIN) */
+#define GPIO_BTN_S1             1
+
 extern void rb532_gpio_set_ilevel(int bit, unsigned gpio);
 extern void rb532_gpio_set_istat(int bit, unsigned gpio);
 extern void rb532_gpio_set_func(unsigned gpio);