[mipi_rgb] Make h- and v-sync pins optional (#14870)

esphome/components/mipi_rgb/display.py

@@ -194,8 +194,12 @@ def model_schema(config):
                 CONF_DE_PIN, cv.UNDEFINED
             ): pins.internal_gpio_output_pin_schema,
             model.option(CONF_PCLK_PIN): pins.internal_gpio_output_pin_schema,
-            model.option(CONF_HSYNC_PIN): pins.internal_gpio_output_pin_schema,
-            model.option(CONF_VSYNC_PIN): pins.internal_gpio_output_pin_schema,
+            model.option(
+                CONF_HSYNC_PIN, cv.UNDEFINED
+            ): pins.internal_gpio_output_pin_schema,
+            model.option(
+                CONF_VSYNC_PIN, cv.UNDEFINED
+            ): pins.internal_gpio_output_pin_schema,
             model.option(CONF_RESET_PIN, cv.UNDEFINED): pins.gpio_output_pin_schema,
         }
     )
@@ -307,10 +311,12 @@ async def to_code(config):
         cg.add(var.set_de_pin(pin))
     pin = await cg.gpio_pin_expression(config[CONF_PCLK_PIN])
     cg.add(var.set_pclk_pin(pin))
-    pin = await cg.gpio_pin_expression(config[CONF_HSYNC_PIN])
-    cg.add(var.set_hsync_pin(pin))
-    pin = await cg.gpio_pin_expression(config[CONF_VSYNC_PIN])
-    cg.add(var.set_vsync_pin(pin))
+    if hsync_pin := config.get(CONF_HSYNC_PIN):
+        pin = await cg.gpio_pin_expression(hsync_pin)
+        cg.add(var.set_hsync_pin(pin))
+    if vsync_pin := config.get(CONF_VSYNC_PIN):
+        pin = await cg.gpio_pin_expression(vsync_pin)
+        cg.add(var.set_vsync_pin(pin))
 
     await display.register_display(var, config)
     if lamb := config.get(CONF_LAMBDA):

esphome/components/mipi_rgb/mipi_rgb.cpp

@@ -158,8 +158,16 @@ void MipiRgb::common_setup_() {
   }
   config.data_width = data_pin_count;
   config.disp_gpio_num = GPIO_NUM_NC;
-  config.hsync_gpio_num = static_cast<gpio_num_t>(this->hsync_pin_->get_pin());
-  config.vsync_gpio_num = static_cast<gpio_num_t>(this->vsync_pin_->get_pin());
+  if (this->hsync_pin_) {
+    config.hsync_gpio_num = static_cast<gpio_num_t>(this->hsync_pin_->get_pin());
+  } else {
+    config.hsync_gpio_num = GPIO_NUM_NC;
+  }
+  if (this->vsync_pin_) {
+    config.vsync_gpio_num = static_cast<gpio_num_t>(this->vsync_pin_->get_pin());
+  } else {
+    config.vsync_gpio_num = GPIO_NUM_NC;
+  }
   if (this->de_pin_) {
     config.de_gpio_num = static_cast<gpio_num_t>(this->de_pin_->get_pin());
   } else {