linux-kernel - Re: [PATCH 3/3] arm: koelsch: make USB0 perform Host/Function switching

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Date:	Mon, 22 Jun 2015 20:49:15 +0300
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Phil Edworthy <phil.edworthy@...esas.com>,
	Kishon Vijay Abraham I <kishon@...com>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
	Simon Horman <horms@...ge.net.au>
CC:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	linux-sh@...r.kernel.org
Subject: Re: [PATCH 3/3] arm: koelsch: make USB0 perform Host/Function switching

Hello.

On 06/22/2015 08:43 PM, Sergei Shtylyov wrote:

>> Both USB Host (pci0) and Function (USBHS) drivers are enabled.
>> The USB PHY driver determines which IP block should be connected
>> based on vbus and id signals read via gpios.

>> Signed-off-by: Phil Edworthy <phil.edworthy@...esas.com>
>> ---
>>   arch/arm/boot/dts/r8a7791-koelsch.dts | 7 ++++---
>>   1 file changed, 4 insertions(+), 3 deletions(-)

>> diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts
>> b/arch/arm/boot/dts/r8a7791-koelsch.dts
>> index cffe33f..8f394be 100644
>> --- a/arch/arm/boot/dts/r8a7791-koelsch.dts
>> +++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
> [...]
>> @@ -627,13 +626,15 @@
>>
>>   &hsusb {
>>       status = "okay";
>> -    pinctrl-0 = <&usb0_pins>;
>>       pinctrl-names = "default";
>> -    renesas,enable-gpio = <&gpio5 31 GPIO_ACTIVE_HIGH>;
>>   };
>>
>>   &usbphy {
>>       status = "okay";
>> +    renesas,pwr = <&gpio2 4 GPIO_ACTIVE_HIGH>;
>> +    renesas,id = <&gpio5 31 GPIO_ACTIVE_HIGH>;
>> +    renesas,vbus = <&gpio7 24 GPIO_ACTIVE_HIGH>;
>> +    renesas,vbus-pwr = <&gpio7 23 GPIO_ACTIVE_HIGH>;

>     The prop names should end with "-gpio" or even "-gpios", according to the
> GPIO bindings.

    Oh, and you didn't document the props in the previous patch.

WBR, Sergei

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