drivers: net: driver for MDIO muxes controlled over I2C

This driver is used for MDIO muxes driven over I2C.  This is currently
used on Freescale LS1028A QDS board, on which the physical MDIO MUX is
controlled by an on-board FPGA which in turn is configured through I2C.

Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 4d85fb1..883b849 100644 (file)
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -595,4 +595,12 @@ config FSL_ENETC
          This driver supports the NXP ENETC Ethernet controller found on some
          of the NXP SoCs.
 
+config MDIO_MUX_I2CREG
+       bool "MDIO MUX accessed as a register over I2C"
+       depends on DM_MDIO_MUX && DM_I2C
+       help
+         This driver is used for MDIO muxes driven by writing to a register of
+         an I2C chip.  The board it was developed for uses a mux controlled by
+         on-board FPGA which in turn is accessed as a chip over I2C.
+
 endif # NETDEVICES

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index b6e40df..71c0889 100644 (file)
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_LAN91C96) += lan91c96.o
 obj-$(CONFIG_LPC32XX_ETH) += lpc32xx_eth.o
 obj-$(CONFIG_MACB) += macb.o
 obj-$(CONFIG_MCFFEC) += mcffec.o mcfmii.o
+obj-$(CONFIG_MDIO_MUX_I2CREG) += mdio_mux_i2creg.o
 obj-$(CONFIG_MDIO_MUX_SANDBOX) += mdio_mux_sandbox.o
 obj-$(CONFIG_MPC8XX_FEC) += mpc8xx_fec.o
 obj-$(CONFIG_MT7628_ETH) += mt7628-eth.o