+static int sh_pfc_pinctrl_pin_set(struct udevice *dev, unsigned pin_selector,
+ unsigned func_selector)
+{
+ struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
+ struct sh_pfc_pinctrl *pmx = &priv->pmx;
+ struct sh_pfc *pfc = &priv->pfc;
+ const struct sh_pfc_pin *pin = &priv->pfc.info->pins[pin_selector];
+ int idx = sh_pfc_get_pin_index(pfc, pin->pin);
+ struct sh_pfc_pin_config *cfg = &pmx->configs[idx];
+
+ if (cfg->type != PINMUX_TYPE_NONE)
+ return -EBUSY;
+
+ return sh_pfc_config_mux(pfc, pin->enum_id, PINMUX_TYPE_FUNCTION);
+}
+