On Tue, Apr 16, 2013 at 7:52 PM, Tony Lindgren <tony@xxxxxxxxxxx> wrote:
> * Roger Quadros <rogerq@xxxxxx> [130415 05:44]:
>> On 04/15/2013 03:35 PM, Roger Quadros wrote:
>> > Provide RESET and Power regulators for the USB PHY,
>> > the USB Host port mode and the PHY device.
>> >
>> > Also provide pin multiplexer information for USB host
>> > pins.
>> >
>> > This will not work for Rev Cx boards because of reversed logic
>> > for USB_POWER_Enable.
>> >
>> > CC: Benoît Cousson <b-cousson@xxxxxx>
>> > Signed-off-by: Roger Quadros <rogerq@xxxxxx>
>> > ---
>> > arch/arm/boot/dts/omap3-beagle-xm.dts | 62 +++++++++++++++++++++++++++++++++
>> > 1 files changed, 62 insertions(+), 0 deletions(-)
>> >
>> > diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
>> > index 5a31964..d394c51 100644
>> > --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
>> > +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
>> > @@ -57,6 +57,60 @@
>> > ti,mcbsp = <&mcbsp2>;
>> > ti,codec = <&twl_audio>;
>> > };
>> > +
>> > + /* HS USB Port 2 RESET */
>> > + hsusb2_reset: hsusb2_reset_reg {
>> > + compatible = "regulator-fixed";
>> > + regulator-name = "hsusb2_reset";
>> > + regulator-min-microvolt = <3300000>;
>> > + regulator-max-microvolt = <3300000>;
>> > + gpio = <&gpio5 19 0>; /* gpio_147 */
>> > + startup-delay-us = <70000>;
>> > + enable-active-high;
>> > + };
>> > +
>> > + /* HS USB Port 2 Power */
>> > + hsusb2_power: hsusb2_power_reg {
>> > + compatible = "regulator-fixed";
>> > + regulator-name = "hsusb2_vbus";
>> > + regulator-min-microvolt = <3300000>;
>> > + regulator-max-microvolt = <3300000>;
>> > + gpio = <&twl_gpio 18 0>; /* GPIO LEDA */
>> > + startup-delay-us = <70000>;
>> > + enable-active-high; /* FIXME: active-low for Rev. C */
>>
>> Benoit & Tony,
>>
>> Any ideas how to tackle the reversed logic for Rev. C boards?
>
> Sounds like we need a shared omap3-beage.dtsi, then omap3-beagle-xm.dts
> and omap3-beagle-rev-c.dts. Then xm and rev-c can both include the
Bike-sheding, but we might want to make that "omap3-beagle-xmc.dts" as
there is the "rev c" variant of the original beagle...
It's too bad we can't read the 3 gpio pin states in the device tree
and make a decision.
Regards,
--
Robert Nelson
http://www.rcn-ee.com/
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