From: Sandeep Maheswaram <sanm@codeaurora.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Felipe Balbi <balbi@kernel.org>,
Stephen Boyd <swboyd@chromium.org>,
Doug Anderson <dianders@chromium.org>,
Matthias Kaehlcke <mka@chromium.org>,
Mathias Nyman <mathias.nyman@intel.com>,
linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, ppratap@codeaurora.org,
pkondeti@codeaurora.org
Subject: Re: [PATCH] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT
Date: Thu, 14 Oct 2021 11:10:58 +0530 [thread overview]
Message-ID: <09477c8a-f242-202c-8ead-eebc4f1cdd7d@codeaurora.org> (raw)
In-Reply-To: <YWU6IZwm2T24ONW2@kroah.com>
Hi,
On 10/12/2021 1:02 PM, Greg Kroah-Hartman wrote:
> On Mon, Oct 11, 2021 at 03:31:57PM +0530, Sandeep Maheswaram wrote:
>> dwc3 manages PHY by own DRD driver, so skip the management by
>> HCD core.
>> During runtime suspend phy was not getting suspend because
>> runtime_usage value is 2.
>>
>> Signed-off-by: Sandeep Maheswaram <sanm@codeaurora.org>
>> ---
>> drivers/usb/dwc3/host.c | 12 ++++++++++++
>> 1 file changed, 12 insertions(+)
>>
>> diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
>> index f29a264..0921f05 100644
>> --- a/drivers/usb/dwc3/host.c
>> +++ b/drivers/usb/dwc3/host.c
>> @@ -11,6 +11,11 @@
>> #include <linux/platform_device.h>
>>
>> #include "core.h"
>> +#include "../host/xhci-plat.h"
> Why are you tying the dwc3 driver to the xhci driver?
>
Can we add a property usb-skip-phy-init in drivers/usb/dwc3/host.c
props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb-skip-phy-init");
and set the quirk like this in xhci-plat.c
if (device_property_read_bool(tmpdev, "usb-skip-phy-init"))
xhci->quirks |= XHCI_SKIP_PHY_INIT;
as below
if (device_property_read_bool(tmpdev, "usb2-lpm-disable"))
xhci->quirks |= XHCI_HW_LPM_DISABLE;
if (device_property_read_bool(tmpdev, "usb3-lpm-capable"))
xhci->quirks |= XHCI_LPM_SUPPORT;
>> +
>> +static const struct xhci_plat_priv xhci_plat_dwc3_xhci = {
>> + .quirks = XHCI_SKIP_PHY_INIT,
> If these quirks are now "global", they should go into a
> include/linux/usb/ .h file, right?
>
> thanks,
>
> greg k-h
prev parent reply other threads:[~2021-10-14 5:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 10:01 [PATCH] usb: dwc: host: add xhci_plat_priv quirk XHCI_SKIP_PHY_INIT Sandeep Maheswaram
2021-10-12 7:32 ` Greg Kroah-Hartman
2021-10-14 5:40 ` Sandeep Maheswaram [this message]
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