Re: [PATCH] phy: omap: Adapt phy-omap-usb2 for AM437x

[George Cherian]

Hi Mark,

Fixed all your comments and already sent a V2.


On 10/14/2013 8:03 PM, Mark Rutland wrote:
> On Mon, Oct 14, 2013 at 01:43:23PM +0100, George Cherian wrote:
> > This patch adds a compatible for AM437x "ti,am43xx-usb2" to
> > reuse the same phy-omap-usb2 driver.
> >
> > Also updated the documentation to add the new compatible.
> >
> > Signed-off-by: George Cherian <george.cherian@xxxxxx>
> > ---
> >   Documentation/devicetree/bindings/usb/usb-phy.txt |  2 +-
> >   drivers/phy/phy-omap-usb2.c                       | 13 ++++++++++---
> >   2 files changed, 11 insertions(+), 4 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/usb/usb-phy.txt b/Documentation/devicetree/bindings/usb/usb-phy.txt
> > index c0245c8..d5a7f21 100644
> > --- a/Documentation/devicetree/bindings/usb/usb-phy.txt
> > +++ b/Documentation/devicetree/bindings/usb/usb-phy.txt
> > @@ -3,7 +3,7 @@ USB PHY
> >   OMAP USB2 PHY
> >   
> >   Required properties:
> > - - compatible: Should be "ti,omap-usb2"
> > + - compatible: Should be "ti,omap-usb2" or "ti,am437x-usb2"
> In case this needs to be modified in future, it might be best to split
> this up one per line, with a brief description of when it applies:
>
> - compatible: Should contain one of:
>    * "ti,omap-usb2" for ____ systems
>    * "ti,am437x-usb2" for ____ systems
>
> >    - reg : Address and length of the register set for the device.
> >    - #phy-cells: determine the number of cells that should be given in the
> >      phandle while referencing this phy.
> > diff --git a/drivers/phy/phy-omap-usb2.c b/drivers/phy/phy-omap-usb2.c
> > index bfc5c33..0529c83 100644
> > --- a/drivers/phy/phy-omap-usb2.c
> > +++ b/drivers/phy/phy-omap-usb2.c
> > @@ -29,6 +29,7 @@
> >   #include <linux/delay.h>
> >   #include <linux/usb/omap_control_usb.h>
> >   #include <linux/phy/phy.h>
> > +#include <linux/of.h>
> >   #include <linux/of_platform.h>
> >   
> >   /**
> > @@ -172,7 +173,10 @@ static int omap_usb2_probe(struct platform_device *pdev)
> >   	phy->dev		= &pdev->dev;
> >   
> >   	phy->phy.dev		= phy->dev;
> > -	phy->phy.label		= "omap-usb2";
> > +	if (of_device_is_compatible(node, "ti,am437x-usb2"))
> > +		phy->phy.label		= "am437x-usb2";
> > +	else
> > +		phy->phy.label		= "omap-usb2";
> Instead of having this check here, you could put together a struct
> containing the data applying to a particular compatible string, and
> associate it with the compatible string using of_device_id::data.
>
> That means we don't need to duplicate the compatible strings, and it's
> easier to extend in future.
>
> >   	phy->phy.set_suspend	= omap_usb2_suspend;
> >   	phy->phy.otg		= otg;
> >   	phy->phy.type		= USB_PHY_TYPE_USB2;
> > @@ -201,8 +205,10 @@ static int omap_usb2_probe(struct platform_device *pdev)
> >   
> >   	otg->set_host		= omap_usb_set_host;
> >   	otg->set_peripheral	= omap_usb_set_peripheral;
> > -	otg->set_vbus		= omap_usb_set_vbus;
> > -	otg->start_srp		= omap_usb_start_srp;
> > +	if (of_device_is_compatible(node, "ti,omap-usb2")) {
> > +		otg->set_vbus		= omap_usb_set_vbus;
> > +		otg->start_srp		= omap_usb_start_srp;
> > +	}
> Similarly here.
>
> Cheers,
> Mark.


--
-George

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