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

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Message-ID: <BYAPR07MB470974072BDED3F032E35F80DD920@BYAPR07MB4709.namprd07.prod.outlook.com>
Date:   Wed, 16 Oct 2019 04:35:39 +0000
From:   Pawel Laszczak <pawell@...ence.com>
To:     Peter Chen <peter.chen@....com>, Roger Quadros <rogerq@...com>
CC:     "felipe.balbi@...ux.intel.com" <felipe.balbi@...ux.intel.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "nsekhar@...com" <nsekhar@...com>,
        Rahul Kumar <kurahul@...ence.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/2] usb: cdns3: gadget: Fix full-speed mode

>On 19-10-07 15:16:01, Roger Quadros wrote:
>> 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>
>> ---
>>  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);
>
>Reviewed-by: Peter Chen <peter.chen@....com>

Reviewed-by: Pawel Laszczak <pawell@...ence.com>
>
>--
>
>Thanks,
>Peter Chen

Regards,
Pawell