linux/drivers/of
Roger Quadros 69226896ad mdio_bus: Issue GPIO RESET to PHYs.
Some boards [1] leave the PHYs at an invalid state
during system power-up or reset thus causing unreliability
issues with the PHY which manifests as PHY not being detected
or link not functional. To fix this, these PHYs need to be RESET
via a GPIO connected to the PHY's RESET pin.

Some boards have a single GPIO controlling the PHY RESET pin of all
PHYs on the bus whereas some others have separate GPIOs controlling
individual PHY RESETs.

In both cases, the RESET de-assertion cannot be done in the PHY driver
as the PHY will not probe till its reset is de-asserted.
So do the RESET de-assertion in the MDIO bus driver.

[1] - am572x-idk, am571x-idk, a437x-idk

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-24 12:40:24 -04:00
..
unittest-data of/unittest: replace 'selftest' with 'unittest' 2015-03-25 00:53:29 -05:00
Kconfig mtd: Kill the OF_MTD Kconfig option 2016-09-23 09:35:16 +02:00
Makefile MTD updates for v4.7: 2016-05-24 11:00:20 -07:00
address.c of: use pr_fmt prefix for all console printing 2016-07-18 16:57:42 -05:00
base.c DeviceTree updates for 4.11: 2017-02-22 19:23:14 -08:00
device.c of: device: Export of_device_{get_modalias, uvent_modalias} to modules 2017-01-20 11:23:56 +08:00
dynamic.c of: use pr_fmt prefix for all console printing 2016-07-18 16:57:42 -05:00
fdt.c DeviceTree updates for 4.11: 2017-02-22 19:23:14 -08:00
fdt_address.c of: use pr_fmt prefix for all console printing 2016-07-18 16:57:42 -05:00
irq.c of/irq: improve error report on irq discovery process failure 2017-01-09 09:52:17 -06:00
of_mdio.c mdio_bus: Issue GPIO RESET to PHYs. 2017-04-24 12:40:24 -04:00
of_net.c of_net: factor out repetitive code from of_get_mac_address() 2015-03-29 08:56:17 +01:00
of_numa.c of, numa: Return NUMA_NO_NODE from disable of_node_to_nid() if nid not possible. 2016-11-15 09:17:12 -06:00
of_pci.c of/pci: Add of_pci_get_max_link_speed() to parse max-link-speed from DT 2016-11-14 15:21:14 -06:00
of_pci_irq.c of/irq: improve error report on irq discovery process failure 2017-01-09 09:52:17 -06:00
of_private.h of: fix memory leak related to safe_name() 2016-06-24 15:16:10 -05:00
of_reserved_mem.c of: reserved_mem: set dma_ops for devices using reserved mem 2017-01-04 14:00:45 -06:00
overlay.c of: remove redundant memset in overlay 2017-01-09 14:21:23 -06:00
pdt.c of: Eliminate of_allnodes list 2014-11-04 13:29:38 +00:00
platform.c of: make of_device_make_bus_id() static 2017-02-09 09:29:37 -06:00
resolver.c of: drop duplicate headers 2017-01-04 14:01:28 -06:00
unittest.c of/unittest: Swap arguments of of_unittest_apply_overlay() 2017-01-23 14:58:03 -06:00