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USB2.0 PHY hangs in Rx Compliance test when the incoming packet
amplitude is varied below and above the Squelch Level of
Receiver during the active packet multiple times.
Version 1 of the controller allows PHY to be reset when RX fail condition
is detected to work around the above issue. This feature is
disabled by default and needs to be enabled using a bit from
the newly added PHYRST_CFG register. This patch enables the workaround.
There is no way to know controller version before device controller
is started and the workaround needs to be applied for both host and
device modes, so we rely on a DT property do decide when to
apply the workaround.
Signed-off-by: Pawel Laszczak <[email protected]>
Signed-off-by: Roger Quadros <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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Patch split function cdns3_drd_switch_gadget and
cdns3_drd_switch_host into:
- cdns3_drd_host_on
- cdns3_drd_host_off
- cdns3_drd_gadget_on
- cdns3_drd_gadgett_off
These functions don't have any shared code so it's better to
have smaller, faster and easier functions.
Signed-off-by: Pawel Laszczak <[email protected]>
Reviewed-by: Peter Chen <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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Patch adds 2 definitions that make it easier to understand the code.
Reviewed-by: Peter Chen <[email protected]>
Signed-off-by: Pawel Laszczak <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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Patch changes return type from int to bool for
cdns3_is_host and cdns3_is_device functions.
Reviewed-by: Peter Chen <[email protected]>
Signed-off-by: Pawel Laszczak <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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This patch introduce new Cadence USBSS DRD driver to Linux kernel.
The Cadence USBSS DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role Device (DRD), Peripheral Only and
Host Only (XHCI)configurations.
The current driver has been validated with FPGA platform. We have
support for PCIe bus, which is used on FPGA prototyping.
The host side of USBSS-DRD controller is compliant with XHCI
specification, so it works with standard XHCI Linux driver.
Signed-off-by: Pawel Laszczak <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
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