drivers: firmware: scmi: add CONFIG_ARM_SCMI_CHAN_SEM_TIMEOUT_USEC

Add option CONFIG_ARM_SCMI_CHAN_SEM_TIMEOUT_USEC
for users to change default timeout value.
Different platform has different delay time when
scmi agent get scmi response from scmi platform.

Signed-off-by: Biwen Li <[email protected]>

Author: biwenli

drivers/firmware/scmi/Kconfig

@@ -64,6 +64,13 @@ config ARM_SCMI_TRANSPORT_INIT_PRIORITY
 	help
 	  SCMI transport driver device initialization priority.
 
+config ARM_SCMI_CHAN_SEM_TIMEOUT_USEC
+	int "ARM SCMI channel semaphore timeout"
+	default 500
+	help
+	  Maximum number of microseconds to wait for a reply from the
+	  scmi platform.
+
 source "drivers/firmware/scmi/nxp/Kconfig"
 
 endif # ARM_SCMI

drivers/firmware/scmi/core.c

@@ -13,7 +13,6 @@
 LOG_MODULE_REGISTER(scmi_core);
 
 #define SCMI_CHAN_LOCK_TIMEOUT_USEC 500
-#define SCMI_CHAN_SEM_TIMEOUT_USEC 500
 
 int scmi_status_to_errno(int scmi_status)
 {
@@ -180,7 +179,7 @@ static int scmi_send_message_interrupt(struct scmi_protocol *proto,
 	}
 
 	/* only one protocol instance can wait for a message reply at a time */
-	ret = k_sem_take(&proto->tx->sem, K_USEC(SCMI_CHAN_SEM_TIMEOUT_USEC));
+	ret = k_sem_take(&proto->tx->sem, K_USEC(CONFIG_ARM_SCMI_CHAN_SEM_TIMEOUT_USEC));
 	if (ret < 0) {
 		LOG_ERR("failed to wait for msg reply");
 		goto out_release_mutex;