ASIX AX88796C SPI Fast Ethernet Linux driver (ax88796c-spi.o)

This is the official ASIX AX88796C SPI Fast Ethernet Linux driver source (module name: ax88796c-spi.o), which is suitable for embedded systems, smart home/office devices, Ethernet hubs, switches, routers and home gateway applications.

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ASIX SPI/Non-PCI Fast Ethernet ICs

• AX88796C SPI/Non-PCI Fast Ethernet Chip

The AX88796C is a low‑power SPI/Non-PCI Fast Ethernet controller designed for embedded and industrial networking. It supports multiple host interfaces, including SPI and localbus/SRAM‑like. The local bus allows 8/16‑bit SRAM‑like or multiplexed connections, enabling direct MCU integration without extra logic. For CPUs with SPI, the AX88796C also offers an optional SPI slave interface to simplify hardware design.

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File Description

• README – This file
• ax88796c_main.c / .h – Driver main functions and headers
• ax88796c_ioctl.c / .h – Helper functions and headers
• ax88796c_spi.c / .h – SPI adapter layer and headers
• Makefile – Driver build file
• ax88796c_spi.log – Debug log file
• COPYING – GNU General Public License

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Compiling the Driver

Requirements:

• AX88796C SPI Linux Driver source
• Linux Kernel source code
• Cross‑compiler

Steps:

1. Extract the driver source package:

   tar jxvf SOURCE_PACKAGE.tar.bz2

2. Edit the Makefile to specify the Linux kernel source path:

   KDIR = /usr/src/linux-4.17.6

3. Compile the driver:

   make

4. If successful, ax88796c-spi.o will be generated in the current directory.

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Driver Parameters

[comp]
  setting:
	1 -> Enable SPI compression mode
	0 -> Disable SPI compression mode
  default:
	0

[ps_level]
  setting:
	0 -> Disable power saving
	1 -> Enable power saving level 1
	2 -> Enable power saving level 2
  default:
	0

[msg_enable]
  setting:
	NETIF_MSG_DRV		(0x0001)	(Not used)
	NETIF_MSG_PROBE		(0x0002)	(Probe messages)
	NETIF_MSG_LINK		(0x0004)	(Media change messages)
	NETIF_MSG_TIMER		(0x0008)	(Watchdog messages)
	NETIF_MSG_IFDOWN	(0x0010)	(Not used)
	NETIF_MSG_IFUP		(0x0020)	(Not used)
	NETIF_MSG_RX_ERR	(0x0040)	(RX error messages)
	NETIF_MSG_TX_ERR	(0x0080)	(TX error messages)
	NETIF_MSG_TX_QUEUED	(0x0100)	(TX queue messages)
	NETIF_MSG_INTR		(0x0200)	(Interrupt messages)
	NETIF_MSG_TX_DONE	(0x0400)	(Not used)
	NETIF_MSG_RX_STATUS	(0x0800)	(RX indication messages)
	NETIF_MSG_PKTDATA	(0x1000)	(TX/RX packet data)
	NETIF_MSG_HW		(0x2000)	(MAC/PHY register dump messages)
	NETIF_MSG_WOL		(0x4000)	(Wake-On-Lan messages)
  default:
	NETIF_MSG_PROBE | NETIF_MSG_LINK | \
	NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR | \
	NETIF_MSG_WOL