Hi Vladimir,
CC Shimoda-san
On Fri, Oct 6, 2017 at 4:38 AM, Vladimir Barinov
<vladimir.barinov@xxxxxxxxxxxxxxxxxx> wrote:
> On 20.09.2017 15:59, Geert Uytterhoeven wrote:
>> On Thu, Sep 7, 2017 at 12:36 AM, Vladimir Barinov
>> <vladimir.barinov@xxxxxxxxxxxxxxxxxx> wrote:
>>> This supports USB2 PHY channel #0 on ULCB Kingfisher board
>>>
>>> Signed-off-by: Vladimir Barinov <vladimir.barinov@xxxxxxxxxxxxxxxxxx>
>>
>> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
>>
>>> index ca8de1a..0854600 100644
>>> --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
>>> +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
>>> @@ -60,6 +60,11 @@
>>> groups = "scif1_data_b";
>>> function = "scif1";
>>> };
>>> +
>>> + usb0_pins: usb0 {
>>> + groups = "usb0";
>>> + function = "usb0";
>>> + };
>>> };
>>>
>>> &scif1 {
>>> @@ -68,3 +73,10 @@
>>>
>>> status = "okay";
>>> };
>>> +
>>> +&usb2_phy0 {
>>> + pinctrl-0 = <&usb0_pins>;
>>> + pinctrl-names = "default";
>>> +
>>
>> Don't you need
>>
>> vbus-supply = <&vbus0_usb2>;
>>
>> with vbus0_usb2 a fixed regulator controlled by GPIO P11 (OTG_EXTLPn) from
>> GPIO expander U11 (TCA9539)?
>> May be optional, though. salvator-common.dtsi has it.
>
> Yes, I need this gpio.
> I need both OTG_EXTLPn and OTG_OFFVBUSn from the same gpio expander.
>
> I've been considering to use either vbus-supply + gpio hog or use gpio hog
> for both of them for consistency.
> What do you think about this?
For OTG_EXTLPn you don't really need a hog, as it will be controlled by the
USB driver/subsystem, like on Salvator-X(S), right?
For OTG_OFFVBUSn, which is (optionally) driven from USB0_PWEN on
Salvator-X(S) I don't know if you need a GPIO hog or not. I have to defer your
question to Shimoda-san.
> I plan to add these gpios control as a separate patch.
OK.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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