linux-kernel - [RFC PATCH 2/3] usb: chipidea: add usb2 phy interface for Zynq platform

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Date:   Fri, 29 Sep 2023 12:18:51 +0530
From:   Piyush Mehta <piyush.mehta@....com>
To:     <gregkh@...uxfoundation.org>, <michal.simek@....com>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <peter.chen@...nel.org>,
        <linus.walleij@...aro.org>, <paul@...pouillou.net>, <arnd@...db.de>
CC:     <piyush.mehta@....com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <git@....com>
Subject: [RFC PATCH 2/3] usb: chipidea: add usb2 phy interface for Zynq platform

USB2 phy has been added to the Zynq platform data. This defines the ULPI
phy interface for accessing the ULPI register.

Signed-off-by: Piyush Mehta <piyush.mehta@....com>
---
 drivers/usb/chipidea/ci_hdrc_usb2.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
index 1321ee67f3b8..a115383fa1ee 100644
--- a/drivers/usb/chipidea/ci_hdrc_usb2.c
+++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
@@ -65,6 +65,14 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
 	if (match && match->data) {
 		/* struct copy */
 		*ci_pdata = *(struct ci_hdrc_platform_data *)match->data;
+		if (of_device_is_compatible(pdev->dev.of_node,
+					    "xlnx,zynq-usb-2.20a")) {
+			ci_pdata->usb_phy = devm_usb_get_phy_by_phandle(dev,
+									"usb-phy",
+									0);
+			if (IS_ERR(ci_pdata->usb_phy))
+				return PTR_ERR(ci_pdata->usb_phy);
+		}
 	}
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
-- 
2.17.1