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Date: Wed, 2 Sep 2020 16:35:42 +0300
From: Roger Quadros <rogerq@...com>
To: <balbi@...nel.org>
CC: <pawell@...ence.com>, <kurahul@...ence.com>, <nsekhar@...com>,
<vigneshr@...com>, <robh+dt@...nel.org>,
<linux-usb@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<devicetree@...r.kernel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH v2 2/3] dt-bindings: usb: cdns,usb3: Add cdns,phyrst-a-enable property
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 know controller version before device controller
is started and the workaround needs to be applied for both host and
device modes, so we add this DT property.
Signed-off-by: Roger Quadros <rogerq@...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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