diff --git a/bsp/renesas/ra6m3-hmi-board/board/rtduino/arduino_pinout/pins_arduino.c b/bsp/renesas/ra6m3-hmi-board/board/rtduino/arduino_pinout/pins_arduino.c
index 30cd79201a..6982913435 100644
--- a/bsp/renesas/ra6m3-hmi-board/board/rtduino/arduino_pinout/pins_arduino.c
+++ b/bsp/renesas/ra6m3-hmi-board/board/rtduino/arduino_pinout/pins_arduino.c
@@ -47,25 +47,3 @@ const pin_map_t pin_map_table[]=
     {A4, BSP_IO_PORT_05_PIN_08, "adc0", 20},                     /* ADC */
     {A5, BSP_IO_PORT_00_PIN_14, "adc0", 5}                       /* ADC */
 };
-
-static ioport_instance_ctrl_t g_pwm_ioport_ctrl;
-static const ioport_pin_cfg_t g_pwm_pin_cfg_data[] = {
-     {
-          .pin = BSP_IO_PORT_05_PIN_12,
-          .pin_cfg = ((uint32_t) IOPORT_CFG_PERIPHERAL_PIN | (uint32_t) IOPORT_PERIPHERAL_GPT1)
-     },
-};
-
-static const ioport_cfg_t g_pwm_pin_cfg = {
-     .number_of_pins = sizeof(g_pwm_pin_cfg_data)/sizeof(ioport_pin_cfg_t),
-     .p_pin_cfg_data = &g_pwm_pin_cfg_data[0],
-};
-
-void switchToPWM(const char *device_name)
-{
-     if(!rt_strcmp(device_name, "pwm0"))
-     {
-          R_IOPORT_Open(&g_pwm_ioport_ctrl, &g_pwm_pin_cfg);
-          LOG_I("D11 will switch from SPI to PWM");
-     }
-}