Received-SPF: pass (google.com: domain of linux-kernel+bounces-70759-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Date: Mon, 19 Feb 2024 14:10:06 +0800
In-Reply-To: <20240219061008.1761102-1-pumahsu@google.com>
Precedence: bulk
Mime-Version: 1.0
References: <20240219061008.1761102-1-pumahsu@google.com>
Message-ID: <20240219061008.1761102-2-pumahsu@google.com>
Subject: [PATCH 1/3] dt-bindings: usb: Add xhci glue driver support
From: Puma Hsu <pumahsu@google.com>
To: mathias.nyman@intel.com, gregkh@linuxfoundation.org, 
	Thinh.Nguyen@synopsys.com
Cc: badhri@google.com, royluo@google.com, howardyen@google.com, 
	albertccwang@google.com, raychi@google.com, linux-kernel@vger.kernel.org, 
	linux-usb@vger.kernel.org, Puma Hsu <pumahsu@google.com>
Content-Type: text/plain; charset="UTF-8"

Currently the dwc3 driver always probes xhci-plat driver
by hardcode in driver. Introduce a property to make this
flexible that a user can probe a xhci glue driver by the
generic dwc3 driver.

Signed-off-by: Puma Hsu <pumahsu@google.com>
---
 Documentation/devicetree/bindings/usb/usb-drd.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/usb-drd.yaml b/Documentation/devicetree/bindings/usb/usb-drd.yaml
index 114fb5dc0498..215fb7f70054 100644
--- a/Documentation/devicetree/bindings/usb/usb-drd.yaml
+++ b/Documentation/devicetree/bindings/usb/usb-drd.yaml
@@ -62,6 +62,12 @@ properties:
     enum: [host, peripheral]
     default: peripheral
 
+  xhci-glue:
+    description:
+      Tell dwc3 core driver what xhci specific platform driver we want to probe.
+      The string should match to the name of device_driver of platform_driver
+      in the xhci specific platform driver.
+
 additionalProperties: true
 
 examples:
@@ -76,4 +82,5 @@ examples:
         phy_type = "utmi_wide";
         otg-rev = <0x0200>;
         adp-disable;
+        xhci-glue = "xhci-hcd-plat";
     };
-- 
2.44.0.rc0.258.g7320e95886-goog