[PATCH 2/3] dt-bindings: usb: cdns,usb3: Add cdns,phyrst-a-enable property

Roger Quadros
2020-08-25T12:10:43Z

Controller version 0x0002450D has USB2 PHY RX sensitivity issues
that needs to be worked around by enabling phyrst-a-enable bit
in PHYRST_CFG register.

There is no way to distinguish between the controller version
before the device controller is started so we need to add this
DT property.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
Documentation/devicetree/bindings/usb/cdns,usb3.yaml | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
index 7bc0263accee..e670adc955e1 100644
--- a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
+++ b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml
@@ -58,6 +58,10 @@ properties:
buffers expressed in KB
$ref: /schemas/types.yaml#/definitions/uint32

+ cdns,phyrst-a-enable:
+ description: Enable resetting of PHY if Rx fail is detected
+ type: boolean
+
required:
- compatible
- reg
--
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