mpfs/ethernet: Move txtimeout from HPWORK to LPWORK

- Use LPWORK by default if CONFIG_MPFS_ETHMAC_HPWORK is not defined
- Always use LPWORK for timeouts; this makes very lengthy operations such as re-initializing PHY.

Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>

arch/risc-v/src/mpfs/Kconfig

@@ -767,6 +767,13 @@ endchoice # GMAC speed
 
 endif # !MPFS_MAC_AUTONEG
 
+config MPFS_ETHMAC_HPWORK
+	bool "Use HP workqueue"
+	default n
+	depends on MPFS_ETHMAC
+	---help---
+		Select HPWORK workqueue for eth ISR work
+
 config MPFS_ETHMAC_MDC_CLOCK_SOURCE_HZ
 	int "MDC Clock Source (Hz)"
 	default 125000000

arch/risc-v/src/mpfs/mpfs_ethernet.c

@@ -100,8 +100,6 @@
 
 #  if defined(CONFIG_MPFS_ETHMAC_HPWORK)
 #    define ETHWORK HPWORK
-#  elif defined(CONFIG_MPFS_ETHMAC_LPWORK)
-#    define ETHWORK LPWORK
 #  else
 #    define ETHWORK LPWORK
 #  endif
@@ -272,6 +270,7 @@ struct mpfs_ethmac_s
   struct wdog_s txtimeout;                       /* TX timeout timer */
   struct work_s irqwork;                         /* For deferring interrupt work to the work queue */
   struct work_s pollwork;                        /* For deferring poll work to the work queue */
+  struct work_s timeoutwork;                     /* For managing timeouts */
 
   /* This holds the information visible to the NuttX network */
 
@@ -2888,7 +2887,7 @@ static void mpfs_txtimeout_expiry(wdparm_t arg)
 
   /* Schedule to perform the TX timeout processing on the worker thread. */
 
-  work_queue(ETHWORK, &priv->irqwork, mpfs_txtimeout_work, priv, 0);
+  work_queue(LPWORK, &priv->timeoutwork, mpfs_txtimeout_work, priv, 0);
 }
 
 /****************************************************************************