linux-kernel - [PATCH v2 1/2] dt-bindings: phy: qcom,snps-eusb2-repeater: Add more tuning overrides

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Message-ID: <20250416120201.244133-2-mitltlatltl@gmail.com>
Date: Wed, 16 Apr 2025 20:02:00 +0800
From: Pengyu Luo <mitltlatltl@...il.com>
To: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Pengyu Luo <mitltlatltl@...il.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Abel Vesa <abel.vesa@...aro.org>
Cc: linux-arm-msm@...r.kernel.org,
	linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: phy: qcom,snps-eusb2-repeater: Add more tuning overrides

In downstream tree, many registers need to be overridden, it varies
from devices and platforms, not only HS trasmit amplitude(0x51),
HS disconnect threshold(0x53), Tx pre-emphasis tuning(0x57). And
some devices require different overrides for different dr_mode. So
add property entries for host mode, original entries will be used
for device mode.

Signed-off-by: Pengyu Luo <mitltlatltl@...il.com>
---
 .../phy/qcom,snps-eusb2-repeater.yaml         | 41 +++++++++++++++++--
 1 file changed, 38 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml
index d16a543a7..d0f5e770d 100644
--- a/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,snps-eusb2-repeater.yaml
@@ -36,25 +36,60 @@ properties:
 
   qcom,tune-usb2-disc-thres:
     $ref: /schemas/types.yaml#/definitions/uint8
-    description: High-Speed disconnect threshold
+    description: High-Speed disconnect threshold for device mode
     minimum: 0
     maximum: 7
     default: 0
 
   qcom,tune-usb2-amplitude:
     $ref: /schemas/types.yaml#/definitions/uint8
-    description: High-Speed transmit amplitude
+    description: High-Speed transmit amplitude for device mode
     minimum: 0
     maximum: 15
     default: 8
 
   qcom,tune-usb2-preem:
     $ref: /schemas/types.yaml#/definitions/uint8
-    description: High-Speed TX pre-emphasis tuning
+    description: High-Speed TX pre-emphasis tuning for device mode
     minimum: 0
     maximum: 7
     default: 5
 
+  qcom,tune-usb2-squelch:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description: Squelch detection threshold tuning for device mode
+    minimum: 0
+    maximum: 7
+    default: 3
+
+  qcom,tune-usb2-disc-thres-host:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description: High-Speed disconnect threshold for host mode
+    minimum: 0
+    maximum: 7
+    default: 0
+
+  qcom,tune-usb2-amplitude-host:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description: High-Speed transmit amplitude for host mode
+    minimum: 0
+    maximum: 15
+    default: 8
+
+  qcom,tune-usb2-preem-host:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description: High-Speed TX pre-emphasis tuning for host mode
+    minimum: 0
+    maximum: 7
+    default: 5
+
+  qcom,tune-usb2-squelch-host:
+    $ref: /schemas/types.yaml#/definitions/uint8
+    description: Squelch detection threshold tuning for host mode
+    minimum: 0
+    maximum: 7
+    default: 3
+
 required:
   - compatible
   - reg
-- 
2.49.0