Re: [RFC] usb-phy-generic: Add support to SMSC USB3315

[Sergei Shtylyov]

On 04/19/2017 01:24 PM, Peter Senna Tschudin wrote:

> > > We need the SMSC USB3315 clock and regulator to always be initialized.
> > > We also need the PHY driver to take the PHY out of reset. This patch
> > > extends the existing USB generic nop phy driver to include a new
> > > initialization path.
> > >
> > > A new compatible string "smsc,usb3315" is used to decide which
> > > initialization path to use.
> > >
> > > CC: Peter Chen <peter.chen@xxxxxxx>
> > > CC: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
> > > CC: Fabien Lahoudere <fabien.lahoudere@xxxxxxxxxxxxxxx>
> > > Signed-off-by: Peter Senna Tschudin <peter.senna@xxxxxxxxxxxxx>
> > > ---
> > >
> > > This is a follow-up of previous discussion:
> > >   https://www.spinics.net/lists/linux-usb/msg146680.html
> > >
> > >  drivers/usb/phy/phy-generic.c | 33 +++++++++++++++++++++++++++++----
> > >  drivers/usb/phy/phy-generic.h |  1 +
> > >  2 files changed, 30 insertions(+), 4 deletions(-)
> > >
> > > diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
> > > index 89d6e7a..6ea9ce4 100644
> > > --- a/drivers/usb/phy/phy-generic.c
> > > +++ b/drivers/usb/phy/phy-generic.c
> > [...]
> > > @@ -216,18 +221,29 @@ static int nop_set_host(struct usb_otg *otg, struct usb_bus *host)
> > >  	otg->host = host;
> > >  	return 0;
> > >  }
> >
> >    Need empty line here.
> >
> > > +int smsc_usb3315_init(struct usb_phy_generic *nop)
> > > +{
> > > +	/*
> > > +	 * If the gpio for controlling reset state is not available, try again
> > > +	 * later
> > > +	 */
> > > +	if(!nop->gpiod_reset)
> >
> >    You hadn't run the patch thru scripts/checkpatch.pl before posting --
> > need space between *if* and (.
> >
> > [...]
> > > @@ -304,6 +320,12 @@ int usb_phy_gen_create_phy(struct device *dev, struct usb_phy_generic *nop,
> > >  	nop->phy.otg->set_host		= nop_set_host;
> > >  	nop->phy.otg->set_peripheral	= nop_set_peripheral;
> > >
> > > +	if(node && of_device_is_compatible(node, "smsc,usb3315")) {
> >
> >    Same here.
> >
> > [...]
> >
> > MBR, Sergei
>
> Thank you for the review Sergei! Should I send V2 of this RFC fixing
> these issues or wait for comments on the validity of this approach?

   Wait, of course, if this is RFC...

WBR, Sergei