The GPIO pins select which sub bus is connected to the master. Initially tested with an sn74cbtlv3253 switch device wired into the MDIO bus. Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds a somewhat generic framework for MDIO bus
multiplexers. It is modeled on the I2C multiplexer.
The multiplexer is needed if there are multiple PHYs with the same
address connected to the same MDIO bus adepter, or if there is
insufficient electrical drive capability for all the connected PHY
devices.
Conceptually it could look something like this:
------------------
| Control Signal |
--------+---------
|
--------------- --------+------
| MDIO MASTER |---| Multiplexer |
--------------- --+-------+----
| |
C C
h h
i i
l l
d d
| |
--------- A B ---------
| | | | | |
| PHY@1 +-------+ +---+ PHY@1 |
| | | | | |
--------- | | ---------
--------- | | ---------
| | | | | |
| PHY@2 +-------+ +---+ PHY@2 |
| | | |
--------- ---------
This framework configures the bus topology from device tree data. The
mechanics of switching the multiplexer is left to device specific
drivers.
The follow-on patch contains a multiplexer driven by GPIO lines.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Anatolij Gustschin <agust@denx.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Frederic Lambert <frdrc66@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
commit 88491d8103498a6166f70d5999902fec70924314 ("drivers/net: Kconfig
& Makefile cleanup") changed the type of these options to bool, but
they select code that could (and still can) be built as modules.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The is does a general cleanup of the drivers/net/ Kconfig and Makefile. This patch create a "core" option and places all the networking core drivers into this option (default is yes for this option). In addition, it alphabitizes the Kconfig driver options. As a side cleanup, found that the arcnet, token ring, and PHY Kconfig options were a tri-state option and should have been a bool option. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This PHY is available integrated into BCM63xx series SOCs only. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> drivers/net/phy/Kconfig | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) Acked-by: Florian Fainelli <ffainelli@freebox.fr> Signed-off-by: David S. Miller <davem@conan.davemloft.net>
Remove unneeded depends on PHYLIB. The config selection is already in an if PHYLIB / endif block. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the IC+ IP1001 (Gigabit Ethernet Transceiver) driver. I've had to add an additional delay (2ns) to adjust RX clock phase at GMII/ RGMII interface (according to the PHY data-sheet). This helps to have the RGMII working on some ST platforms. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The kernel doesn't have a symbol called BCM63XX. There is a symbol BCM63XX_ENET (introduced in 9b1fc55a0500, 6 weeks after 09bb9aa0ed that introduced BCM63XX_PHY), but the driver compiles without that, too. Cc: Maxime Bizon <mbizon@freebox.fr> Cc: Florian Fainelli <florian@openwrt.org> Cc: David S. Miller <davem@davemloft.net> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>