diff mbox series

[v2,1/2] dt-bindings: phy: imx8mq-usb: add phy tuning properties

Message ID 20230516-lustige-usb-phy-dinge-v2-1-3383a0de34ac@pengutronix.de
State New
Headers
Series Add phy tuning support for imx8mq-usb |

Commit Message

Johannes Zink May 16, 2023, 4:20 p.m. UTC 
  Add optional properties for tuning of usb phy.

Signed-off-by: Johannes Zink <j.zink@pengutronix.de>
---
 .../bindings/phy/fsl,imx8mq-usb-phy.yaml           | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)

Comments

Krzysztof Kozlowski May 17, 2023, 8:45 a.m. UTC | #1 
On 16/05/2023 18:20, Johannes Zink wrote:
> Add optional properties for tuning of usb phy.
> 
> Signed-off-by: Johannes Zink <j.zink@pengutronix.de>
> ---
>  .../bindings/phy/fsl,imx8mq-usb-phy.yaml           | 47 ++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
> 

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml
index e6f9f5540cc3..dc3a3f709fea 100644
--- a/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/fsl,imx8mq-usb-phy.yaml
@@ -35,6 +35,53 @@  properties:
     description:
       A phandle to the regulator for USB VBUS.
 
+  fsl,phy-tx-vref-tune-percent:
+    description:
+      Tunes the HS DC level relative to the nominal level
+    minimum: 94
+    maximum: 124
+
+  fsl,phy-tx-rise-tune-percent:
+    description:
+      Adjusts the rise/fall time duration of the HS waveform relative to
+      its nominal value
+    minimum: 97
+    maximum: 103
+
+  fsl,phy-tx-preemp-amp-tune-microamp:
+    description:
+      Adjust amount of current sourced to DPn and DMn after a J-to-K
+      or K-to-J transition. Default is 0 (disabled).
+    minimum: 0
+    maximum: 1800
+
+  fsl,phy-tx-vboost-level-microvolt:
+    description:
+      Adjust the boosted transmit launch pk-pk differential amplitude
+    minimum: 880
+    maximum: 1120
+
+  fsl,phy-comp-dis-tune-percent:
+    description:
+      Adjust the voltage level used to detect a disconnect event at the host
+      relative to the nominal value
+    minimum: 91
+    maximum: 115
+
+  fsl,phy-pcs-tx-deemph-3p5db-attenuation-db:
+    description:
+      Adjust TX de-emphasis attenuation in dB at nominal
+      3.5dB point as per USB specification
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 36
+
+  fsl,phy-pcs-tx-swing-full-percent:
+    description:
+      Scaling of the voltage defined by fsl,phy-tx-vboost-level-microvolt
+    minimum: 0
+    maximum: 100
+
 required:
   - compatible
   - reg