drivers: mcpwm: esp32c6: Add support

Add MCPWM support to ESP32C6

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>

drivers/pwm/pwm_mc_esp32.c

@@ -19,11 +19,21 @@
 #include <zephyr/drivers/clock_control.h>
 #include <esp_clk_tree.h>
 #ifdef CONFIG_PWM_CAPTURE
+#if defined(CONFIG_RISCV)
+#include <zephyr/drivers/interrupt_controller/intc_esp32c3.h>
+#else
 #include <zephyr/drivers/interrupt_controller/intc_esp32.h>
+#endif
 #endif /* CONFIG_PWM_CAPTURE */
 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(mcpwm_esp32, CONFIG_PWM_LOG_LEVEL);
 
+#if defined(CONFIG_RISCV)
+#define ISR_HANDLER isr_handler_t
+#else
+#define ISR_HANDLER intr_handler_t
+#endif
+
 #ifdef CONFIG_PWM_CAPTURE
 #define SKIP_IRQ_NUM        4U
 #define CAP_INT_MASK        7U
@@ -544,7 +554,7 @@ static DEVICE_API(pwm, mcpwm_esp32_api) = {
 				ESP_PRIO_TO_FLAGS(DT_INST_IRQ_BY_IDX(idx, 0, priority)) |          \
 				ESP_INT_FLAGS_CHECK(DT_INST_IRQ_BY_IDX(idx, 0, flags)) |          \
 					ESP_INTR_FLAG_IRAM,                                        \
-				(intr_handler_t)mcpwm_esp32_isr, (void *)dev, NULL);               \
+				(ISR_HANDLER)mcpwm_esp32_isr, (void *)dev, NULL);                  \
 		return ret;                                                                \
 	}
 #define CAPTURE_INIT(idx) .irq_config_func = mcpwm_esp32_irq_config_func_##idx

dts/riscv/espressif/esp32c6/esp32c6_common.dtsi

@@ -241,5 +241,15 @@
 			clocks = <&rtc ESP32_LEDC_MODULE>;
 			status = "disabled";
 		};
+
+		mcpwm0: mcpwm@60014000 {
+			compatible = "espressif,esp32-mcpwm";
+			reg = <0x60014000 DT_SIZE_K(4)>;
+			interrupts = <MCPWM0_INTR_SOURCE IRQ_DEFAULT_PRIORITY 0>;
+			interrupt-parent = <&intc>;
+			clocks = <&rtc ESP32_MCPWM0_MODULE>;
+			#pwm-cells = <3>;
+			status = "disabled";
+		};
 	};
 };