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Re: [PATCH 5/6] DT bindings documentation for Broadcom IPROC USB Device controller.

Started byRob Herring <robh@kernel.org>
First post2017-02-01 17:20 +0100
Last post2017-02-02 12:30 +0100
Articles 2 — 2 participants

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  Re: [PATCH 5/6] DT bindings documentation for Broadcom IPROC USB  Device controller. Rob Herring <robh@kernel.org> - 2017-02-01 17:20 +0100
    Re: [PATCH 5/6] DT bindings documentation for Broadcom IPROC USB  Device controller. Raviteja Garimella <raviteja.garimella@broadcom.com> - 2017-02-02 12:30 +0100

#1571695 — Re: [PATCH 5/6] DT bindings documentation for Broadcom IPROC USB Device controller.

FromRob Herring <robh@kernel.org>
Date2017-02-01 17:20 +0100
SubjectRe: [PATCH 5/6] DT bindings documentation for Broadcom IPROC USB Device controller.
Message-ID<t65Nw-8ap-29@gated-at.bofh.it>
On Mon, Jan 30, 2017 at 01:26:12PM +0530, Raviteja Garimella wrote:
> The device node is used for UDCs integrated into Broadcom's
> iProc family of SoCs'. The UDC is based on Synopsys Designware
> Cores AHB Subsystem USB Device Controller IP.
> 
> Signed-off-by: Raviteja Garimella <raviteja.garimella@broadcom.com>
> ---
>  .../bindings/usb/brcm,iproc-snps-udc.txt           | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
> 
> diff --git a/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt b/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
> new file mode 100644
> index 0000000..537dd4d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
> @@ -0,0 +1,24 @@
> +Broadcom IPROC USB Device controller.
> +
> +The device node is used for UDCs integrated into Broadcom's
> +iProc family of SoCs'. The UDC is based on Synopsys Designware
> +Cores AHB Subsystem Device Controller.
> +
> +Required properties:
> + - compatible: should be "brcm,iproc-snps-udc"

Adding "snps" in here adds nothing really. Again, please use per SoC 
compatible strings.

> + - reg: Offset and length of UDC register set
> + - interrupts: description of interrupt line
> + - phys: phandle to phy node.
> + - extcon: phandle to the extcon device. This is optional and
> +   not required for those that don't require extcon support.
> +   Extcon support will be required if the UDC is connected to
> +   a Dual Role Device Phy that supports both Host and Device
> +   mode based on the external cable.

Drop this property.

> +
> +Example:
> +	udc_dwc: usb@664e0000 {
> +		compatible = "brcm,iproc-snps-udc";
> +		reg = <0x664e0000 0x2000>;
> +		interrupts = <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>;
> +		phys = <&usbdrd_phy>;
> +		extcon = <&usbdrd_phy>";
> -- 
> 2.1.0
> 

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#1572288

FromRaviteja Garimella <raviteja.garimella@broadcom.com>
Date2017-02-02 12:30 +0100
Message-ID<t6nKp-3ij-7@gated-at.bofh.it>
In reply to#1571695
Hi Rob,

On Wed, Feb 1, 2017 at 9:43 PM, Rob Herring <robh@kernel.org> wrote:
> On Mon, Jan 30, 2017 at 01:26:12PM +0530, Raviteja Garimella wrote:
>> The device node is used for UDCs integrated into Broadcom's
>> iProc family of SoCs'. The UDC is based on Synopsys Designware
>> Cores AHB Subsystem USB Device Controller IP.
>>
>> Signed-off-by: Raviteja Garimella <raviteja.garimella@broadcom.com>
>> ---
>>  .../bindings/usb/brcm,iproc-snps-udc.txt           | 24 ++++++++++++++++++++++
>>  1 file changed, 24 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
>>
>> diff --git a/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt b/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
>> new file mode 100644
>> index 0000000..537dd4d
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/usb/brcm,iproc-snps-udc.txt
>> @@ -0,0 +1,24 @@
>> +Broadcom IPROC USB Device controller.
>> +
>> +The device node is used for UDCs integrated into Broadcom's
>> +iProc family of SoCs'. The UDC is based on Synopsys Designware
>> +Cores AHB Subsystem Device Controller.
>> +
>> +Required properties:
>> + - compatible: should be "brcm,iproc-snps-udc"
>
> Adding "snps" in here adds nothing really. Again, please use per SoC
> compatible strings.

Will do.

>
>> + - reg: Offset and length of UDC register set
>> + - interrupts: description of interrupt line
>> + - phys: phandle to phy node.
>> + - extcon: phandle to the extcon device. This is optional and
>> +   not required for those that don't require extcon support.
>> +   Extcon support will be required if the UDC is connected to
>> +   a Dual Role Device Phy that supports both Host and Device
>> +   mode based on the external cable.
>
> Drop this property.

Ok.

Thanks,
Ravi
>
>> +
>> +Example:
>> +     udc_dwc: usb@664e0000 {
>> +             compatible = "brcm,iproc-snps-udc";
>> +             reg = <0x664e0000 0x2000>;
>> +             interrupts = <GIC_SPI 424 IRQ_TYPE_LEVEL_HIGH>;
>> +             phys = <&usbdrd_phy>;
>> +             extcon = <&usbdrd_phy>";
>> --
>> 2.1.0
>>

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