drivers: eth: Initial support for Renesas RA Ethernet driver

This commit is to enable Ethernet drivers support on Renesas RA
MCU, first target support is the Renesas RA8 series

Signed-off-by: Duy Nguyen <[email protected]>

Author: duynguyenxa

drivers/ethernet/CMakeLists.txt

@@ -41,6 +41,7 @@ zephyr_library_sources_ifdef(CONFIG_ETH_ADIN2111	eth_adin2111.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_LAN865X	        eth_lan865x.c oa_tc6.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_XMC4XXX		eth_xmc4xxx.c)
 zephyr_library_sources_ifdef(CONFIG_ETH_TEST		eth_test.c)
+zephyr_library_sources_ifdef(CONFIG_ETH_RENESAS_RA     eth_renesas_ra.c)
 
 if(CONFIG_ETH_NXP_S32_NETC)
   zephyr_library_sources(eth_nxp_s32_netc.c)

drivers/ethernet/Kconfig

@@ -82,6 +82,7 @@ source "drivers/ethernet/dwc_xgmac/Kconfig"
 source "drivers/ethernet/phy/Kconfig"
 
 source "drivers/ethernet/nxp_enet/Kconfig"
+source "drivers/ethernet/Kconfig.renesas_ra"
 
 endif # "Ethernet Drivers"
 

drivers/ethernet/Kconfig.renesas_ra

@@ -0,0 +1,36 @@
+# Copyright (c) 2024 Renesas Electronics Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config ETH_RENESAS_RA
+	bool "Renesas RA Ethernet"
+	default y
+	depends on DT_HAS_RENESAS_RA_ETHERNET_ENABLED
+	select USE_RA_FSP_ETHER
+	select MDIO
+	help
+	  Enable Renesas RA Ethernet Driver.
+
+if ETH_RENESAS_RA
+
+config ETH_RA_RX_THREAD_STACK_SIZE
+	int "Stack size for internal incoming packet handler"
+	default 1500
+	help
+	  Size of the stack used for internal thread which is ran for
+	  incoming packet processing.
+
+config ETH_RA_RX_THREAD_PRIORITY
+	int "Renesas RA Ethernet receive thread priority"
+	default 2
+
+config ETH_RENESAS_TX_BUF_NUM
+	int "Number of Transmit buffer"
+	default 4
+	range 1 8
+
+config ETH_RENESAS_RX_BUF_NUM
+	int "Number of Receive buffer"
+	default 4
+	range 1 8
+
+endif