linux-kernel - [RFC][PATCH v2 1/5] dt-bindings: usb: dwc3: Add a property to do a CGTL soft reset on mode switching

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Date:   Mon,  7 Oct 2019 17:55:49 +0000
From:   John Stultz <john.stultz@...aro.org>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     John Stultz <john.stultz@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Yu Chen <chenyu56@...wei.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org
Subject: [RFC][PATCH v2 1/5] dt-bindings: usb: dwc3: Add a property to do a CGTL soft reset on mode switching

Provide a dt-binding for quirk needed to do a GCTL soft reset on mode
switching

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Felipe Balbi <balbi@...nel.org>
Cc: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Yu Chen <chenyu56@...wei.com>
Cc: Matthias Brugger <matthias.bgg@...il.com>
Cc: Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc: linux-usb@...r.kernel.org
Cc: devicetree@...r.kernel.org
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 66780a47ad85..cf4ef6c22fb3 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -77,6 +77,8 @@ Optional properties:
 			during HS transmit.
  - snps,dis_metastability_quirk: when set, disable metastability workaround.
 			CAUTION: use only if you are absolutely sure of it.
+ - snps,gctl-reset-quirk: when set, GCTL soft reset will be executed on mode
+			switch.
  - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
 			utmi_l1_suspend_n, false when asserts utmi_sleep_n
  - snps,hird-threshold: HIRD threshold
-- 
2.17.1