drivers/ethernet/Kconfig.nxp_s32_gmac

# Copyright 2022-2023 NXP
# SPDX-License-Identifier: Apache-2.0

menuconfig ETH_NXP_S32_GMAC
	bool "NXP S32 GMAC driver"
	default y
	depends on DT_HAS_NXP_S32_GMAC_ENABLED
	select NOCACHE_MEMORY if ARCH_HAS_NOCACHE_MEMORY_SUPPORT
	select PINCTRL
	imply MDIO
	help
	  Enable GMAC/EMAC Ethernet driver for NXP S32 SoCs.

if ETH_NXP_S32_GMAC

config ETH_NXP_S32_TX_RING_LEN
	int "TX ring length"
	default 4
	range 4 128
	help
	  Length of the TX ring. ETH_NXP_S32_TX_RING_BUF_SIZE * ETH_NXP_S32_TX_RING_LEN
	  must be a multiple of TX FIFO block size.

config ETH_NXP_S32_TX_RING_BUF_SIZE
	int "TX ring data buffer size"
	default 1536
	range 64 1536
	help
	  Size, in bytes, of the TX data buffer. The size must be big enough to
	  store one complete Ethernet frame, and be a multiple of the data bus
	  width.

config ETH_NXP_S32_RX_RING_LEN
	int "RX ring length"
	default 4
	range 4 128
	help
	  Length of the RX ring. ETH_NXP_S32_RX_RING_BUF_SIZE * ETH_NXP_S32_RX_RING_LEN
	  must be a multiple of RX FIFO block size.

config ETH_NXP_S32_RX_RING_BUF_SIZE
	int "RX ring data buffer size"
	default 1536
	range 64 1536
	help
	  Size, in bytes, of the RX data buffer. The size must be big enough to
	  store one complete Ethernet frame, and be a multiple of the data bus
	  width.

config ETH_NXP_S32_CLOCK_CONFIG_IDX
	int
	default 1
	help
	  This option specifies the zero-based index of the clock configuration
	  used to initialize the GMAC/EMAC clocks.

config ETH_NXP_S32_RX_THREAD_PRIO
	int "RX thread priority"
	default 2
	help
	  RX thread priority. RX thread is a cooperative thread.

config ETH_NXP_S32_RX_THREAD_STACK_SIZE
	int "RX thread stack size"
	default 1500
	help
	  RX thread stack size.

config ETH_NXP_S32_RX_BUDGET
	int "RX thread budget"
	default 128
	range 1 1024
	help
	  The budget parameter places a limit on the amount of work the driver
	  may do in the RX thread before yielding the processor, in case there
	  is more work to do. This is to prevent the RX thread to starve other
	  threads. Each received frame counts as one unit of work.

config ETH_NXP_S32_LOOPBACK
	bool "MAC loopback"
	help
	  MAC operates in loopback mode. The data is looped back through
	  internal FIFO on to the internal MII/GMII interface, passing through
	  the corresponding transmit PHY interface block.
	  This mode requires the MII/GMII Rx clock input signal to function
	  properly because the transmit clock is not internally looped back.

config ETH_NXP_S32_MULTICAST_FILTER
	bool "Multicast destination address filtering"
	help
	  Enable support for multicast destination address filtering in the MAC.
	  MAC performs imperfect filtering using a 64-bit hash table. The upper
	  6-bits CRC of the received multicast address is used as index to the
	  content of the hash table. Only multicast with the computed hash set
	  in the multicast table will be received and all other multicast is
	  dropped by the MAC. If disabled, all multicast is received by the MAC.

endif # ETH_NXP_S32_GMAC