linux-kernel - [PATCH v2 2/2] usb: cdns3: gadget: Fix full-speed mode

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Message-ID: <20191016100452.32613-3-rogerq@ti.com>
Date:   Wed, 16 Oct 2019 13:04:52 +0300
From:   Roger Quadros <rogerq@...com>
To:     <felipe.balbi@...ux.intel.com>, <gregkh@...uxfoundation.org>
CC:     <pawell@...ence.com>, <peter.chen@....com>, <nsekhar@...com>,
        <kurahul@...ence.com>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH v2 2/2] usb: cdns3: gadget: Fix full-speed mode

We need to disable USB3 PHY for full-speed mode else
gadget mode is broken.

Signed-off-by: Roger Quadros <rogerq@...com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
Reviewed-by: Peter Chen <peter.chen@....com>
Reviewed-by: Pawel Laszczak <pawell@...ence.com>
---
 drivers/usb/cdns3/gadget.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
index 228cdc4ab886..157536753b8c 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -2571,6 +2571,7 @@ static int cdns3_gadget_start(struct cdns3 *cdns)
 	switch (max_speed) {
 	case USB_SPEED_FULL:
 		writel(USB_CONF_SFORCE_FS, &priv_dev->regs->usb_conf);
+		writel(USB_CONF_USB3DIS, &priv_dev->regs->usb_conf);
 		break;
 	case USB_SPEED_HIGH:
 		writel(USB_CONF_USB3DIS, &priv_dev->regs->usb_conf);
-- 
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