etm: added etm channel allocator

components/soc/esp32c6/include/soc/Kconfig.soc_caps.in

@@ -23,6 +23,10 @@ config SOC_TWAI_SUPPORTED
     bool
     default y
 
+config SOC_ETM_SUPPORTED
+    bool
+    default y
+
 config SOC_BT_SUPPORTED
     bool
     default y
@@ -243,6 +247,14 @@ config SOC_GDMA_PAIRS_PER_GROUP
     int
     default 3
 
+config SOC_ETM_GROUPS
+    int
+    default 1
+
+config SOC_ETM_CHANNELS_PER_GROUP
+    int
+    default 50
+
 config SOC_GPIO_PORT
     int
     default 1

components/soc/esp32c6/include/soc/periph_defs.h

@@ -40,6 +40,7 @@ typedef enum {
     PERIPH_DS_MODULE,
     PERIPH_GDMA_MODULE,
     PERIPH_MCPWM0_MODULE,
+    PERIPH_ETM_MODULE,
     PERIPH_SYSTIMER_MODULE,
     PERIPH_SARADC_MODULE,
     PERIPH_TEMPSENSOR_MODULE,

components/soc/esp32c6/include/soc/soc_caps.h

@@ -31,6 +31,7 @@
 #define SOC_PCNT_SUPPORTED              1
 #define SOC_MCPWM_SUPPORTED             1
 #define SOC_TWAI_SUPPORTED              1
+#define SOC_ETM_SUPPORTED               1
 #define SOC_BT_SUPPORTED                1
 #define SOC_ASYNC_MEMCPY_SUPPORTED      1
 #define SOC_USB_SERIAL_JTAG_SUPPORTED   1
@@ -141,6 +142,10 @@
 #define SOC_GDMA_GROUPS                 (1U) // Number of GDMA groups
 #define SOC_GDMA_PAIRS_PER_GROUP        (3)  // Number of GDMA pairs in each group
 
+/*-------------------------- ETM CAPS --------------------------------------*/
+#define SOC_ETM_GROUPS                  1U  // Number of ETM groups
+#define SOC_ETM_CHANNELS_PER_GROUP      50  // Number of ETM channels in the group
+
 /*-------------------------- GPIO CAPS ---------------------------------------*/
 // ESP32-C6 has 1 GPIO peripheral
 #define SOC_GPIO_PORT               (1U)
@@ -249,7 +254,7 @@
 #define SOC_MCPWM_GPIO_SYNCHROS_PER_GROUP    (3)    ///< The number of GPIO synchros that each group has
 #define SOC_MCPWM_SWSYNC_CAN_PROPAGATE       (1)    ///< Software sync event can be routed to its output
 #define SOC_MCPWM_SUPPORT_ETM                (1)    ///< Support ETM (Event Task Matrix)
-#define SOC_MCPWM_CAPTURE_CLK_FROM_GROUP  (1)    ///< Capture timer shares clock with other PWM timers
+#define SOC_MCPWM_CAPTURE_CLK_FROM_GROUP     (1)    ///< Capture timer shares clock with other PWM timers
 #define SOC_MCPWM_CLK_SUPPORT_PLL160M        (1)    ///< Support PLL160M as clock source
 #define SOC_MCPWM_CLK_SUPPORT_XTAL           (1)    ///< Support XTAL as clock source