Commit 44d30d62 authored by Alan Douglas's avatar Alan Douglas Committed by Kishon Vijay Abraham I

phy: cadence: Add driver for Sierra PHY

Add a Sierra PHY driver with PCIe and USB support.

The PHY has multiple lanes, which can be configured into
groups, and a generic PHY device is created for each group.

There are two resets controlling the overall PHY block, one
to enable the APB interface for programming registers, and
another to enable the PHY itself.  Additionally there are
resets for each PHY lane.

The PHY can be configured in hardware to read register
settings from ROM, or they can be written by the driver.

The sequence of operation on startup is to enable the APB
bus, write the PHY registers (if required)  for each lane
group, and then enable the PHY.  Each group of lanes
can then be individually controlled using the power_on()/
power_off() function for that generic PHY
Signed-off-by: default avatarAlan Douglas <adouglas@cadence.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent cb96a690
# #
# Phy driver for Cadence MHDP DisplayPort controller # Phy drivers for Cadence PHYs
# #
config PHY_CADENCE_DP config PHY_CADENCE_DP
tristate "Cadence MHDP DisplayPort PHY driver" tristate "Cadence MHDP DisplayPort PHY driver"
...@@ -8,3 +8,10 @@ config PHY_CADENCE_DP ...@@ -8,3 +8,10 @@ config PHY_CADENCE_DP
select GENERIC_PHY select GENERIC_PHY
help help
Support for Cadence MHDP DisplayPort PHY. Support for Cadence MHDP DisplayPort PHY.
config PHY_CADENCE_SIERRA
tristate "Cadence Sierra PHY Driver"
depends on OF && HAS_IOMEM && RESET_CONTROLLER
select GENERIC_PHY
help
Enable this to support the Cadence Sierra PHY driver
\ No newline at end of file
obj-$(CONFIG_PHY_CADENCE_DP) += phy-cadence-dp.o obj-$(CONFIG_PHY_CADENCE_DP) += phy-cadence-dp.o
obj-$(CONFIG_PHY_CADENCE_SIERRA) += phy-cadence-sierra.o
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