linux-kernel - Re: [PATCH v2 2/3] arm/dts: Add twl4030-usb data

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Date:	Tue, 11 Sep 2012 16:37:39 +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 2/3] arm/dts: Add twl4030-usb data

Hi,

On Tue, Sep 11, 2012 at 3:39 PM, Benoit Cousson <b-cousson@...com> wrote:
> On 09/11/2012 08:36 AM, Kishon Vijay Abraham I wrote:
>> Add twl4030-usb data node in twl4030 device tree file.
>
> IIRC, the usb part on twl4030 was doing more than it does on twl6030.

Indeed. twl4030 is the usb phy as well (unlike twl6030 which is only a
comparator). But there is not much difference in dt data.
>
> Could you describe what part of the USB is really done by the TWL in
> that case?
>
>> Acked-by: Felipe Balbi <balbi@...com>
>> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
>> ---
>>  arch/arm/boot/dts/twl4030.dtsi |   21 +++++++++++++++++++++
>>  1 file changed, 21 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/twl4030.dtsi b/arch/arm/boot/dts/twl4030.dtsi
>> index 22f4d13..761a5a5 100644
>> --- a/arch/arm/boot/dts/twl4030.dtsi
>> +++ b/arch/arm/boot/dts/twl4030.dtsi
>> @@ -37,6 +37,18 @@
>>               regulator-max-microvolt = <3150000>;
>>       };
>>
>> +     vusb1v5: regulator-vusb1v5 {
>> +             compatible = "ti,twl4030-vusb1v5";
>> +     };
>> +
>> +     vusb1v8: regulator-vusb1v8 {
>> +             compatible = "ti,twl4030-vusb1v8";
>> +     };
>> +
>> +     vusb3v1: regulator-vusb3v1 {
>> +             compatible = "ti,twl4030-vusb3v1";
>> +     };
>> +
>>       twl_gpio: gpio {
>>               compatible = "ti,twl4030-gpio";
>>               gpio-controller;
>> @@ -44,4 +56,13 @@
>>               interrupt-controller;
>>               #interrupt-cells = <1>;
>>       };
>> +
>> +     twl4030-usb {
>
> Same comment than before about the name. Is it the usb-comparator as well?
No. Here it's the phy as well.
>
>> +             compatible = "ti,twl4030-usb";
>> +             interrupts = < 10 4 >;
>> +             usb1v5-supply = <&vusb1v5>;
>> +             usb1v8-supply = <&vusb1v8>;
>> +             usb3v1-supply = <&vusb3v1>;
>> +             usb_mode = <1>;
>
> Is this a TI only attribute or something generic?

It's describes the way twl4030 is connected is connected to omap. So I
think it should be prefixed with "ti".

Thanks
Kishon
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