linux-kernel - Re: [PATCH v2 1/3] arm/dts: Add twl6030-usb data

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Date:	Tue, 11 Sep 2012 15:09:01 +0530
From:	"ABRAHAM, KISHON VIJAY" <kishon@...com>
To:	Benoit Cousson <b-cousson@...com>
Cc:	balbi@...com, linux@....linux.org.uk, rob.herring@...xeda.com,
	grant.likely@...retlab.ca, tony@...mide.com, rnayak@...com,
	hvaibhav@...com, peter.ujfalusi@...com,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] arm/dts: Add twl6030-usb data

Hi,

On Tue, Sep 11, 2012 at 2:56 PM, Benoit Cousson <b-cousson@...com> wrote:
> On 09/11/2012 08:36 AM, Kishon Vijay Abraham I wrote:
>> Add twl6030-usb data node in twl6030 device tree file
>>
>> Acked-by: Felipe Balbi <balbi@...com>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>> ---
>>  arch/arm/boot/dts/omap4-panda.dts |    4 ++++
>>  arch/arm/boot/dts/omap4-sdp.dts   |    4 ++++
>>  arch/arm/boot/dts/twl6030.dtsi    |    5 +++++
>>  3 files changed, 13 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/omap4-panda.dts b/arch/arm/boot/dts/omap4-panda.dts
>> index 9880c12..2999eba 100644
>> --- a/arch/arm/boot/dts/omap4-panda.dts
>> +++ b/arch/arm/boot/dts/omap4-panda.dts
>> @@ -126,3 +126,7 @@
>>       ti,non-removable;
>>       bus-width = <4>;
>>  };
>> +
>> +&twlusb {
>> +     usb-supply = <&vusb>;
>> +};
>> diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
>> index 72216e9..d8290c0 100644
>> --- a/arch/arm/boot/dts/omap4-sdp.dts
>> +++ b/arch/arm/boot/dts/omap4-sdp.dts
>> @@ -226,3 +226,7 @@
>>       bus-width = <4>;
>>       ti,non-removable;
>>  };
>> +
>> +&twlusb {
>> +     usb-supply = <&vusb>;
>> +};
>> diff --git a/arch/arm/boot/dts/twl6030.dtsi b/arch/arm/boot/dts/twl6030.dtsi
>> index 3b2f351..8e3aac9 100644
>> --- a/arch/arm/boot/dts/twl6030.dtsi
>> +++ b/arch/arm/boot/dts/twl6030.dtsi
>> @@ -83,4 +83,9 @@
>>       clk32kg: regulator@12 {
>>               compatible = "ti,twl6030-clk32kg";
>>       };
>> +
>> +     twlusb: twl6030-usb {
>
> That name should be a generic device class name is possible.
> What is twl6030-usb exactly? an USB PHY?

Of late we are calling it the comparator as it's used only to detect
VBUS/ID events.
Should it be like usb-comparator? What should be the label?
>
>> +             compatible = "ti,twl6030-usb";
>> +             interrupts = < 4 10 >;
>
> If this is for two interrupts, you'd better split them to avoid
> confusion with irq specifiers that requires several attributes like for
> the GIC.

yeah. Thats for 2 interrupts.
>
> +               interrupts = <4>, <10>; /* IRQ1 blabla, IRQ2 blabla*/
>
> The comments are not mandatory assuming the binding is documented.

It's documented *usb: twl6030: Add dt support for twl6030 usb*

Thanks
Kishon
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