linux-kernel - Re: [PATCH 02/11] dt-bindings: usb: Add NVIDIA Tegra XUSB host controller binding

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Date:   Tue, 25 Oct 2022 08:02:09 +0000
From:   Wayne Chang <waynec@...dia.com>
To:     Rob Herring <robh@...nel.org>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "heikki.krogerus@...ux.intel.com" <heikki.krogerus@...ux.intel.com>,
        Ajay Gupta <ajayg@...dia.com>, "kishon@...com" <kishon@...com>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "balbi@...nel.org" <balbi@...nel.org>,
        "mathias.nyman@...el.com" <mathias.nyman@...el.com>,
        Jui Chang Kuo <jckuo@...dia.com>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sing-Han Chen <singhanc@...dia.com>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 02/11] dt-bindings: usb: Add NVIDIA Tegra XUSB host
 controller binding

Thanks for the review.
All the changes will be updated in the next patchset except the 
power-domain-name.

On 10/24/22 22:54, Rob Herring wrote:
> External email: Use caution opening links or attachments
> 
> 
>> +description:
>> +  The Tegra XHCI controller supports both USB 2.0 HighSpeed/FullSpeed and
>> +  USB 3.1 SuperSpeed protocols.
>> +
>> +maintainers:
>> +  - Wayne Chang <waynec@...dia.com>
>> +
> 
> Ref to usb-xhci.yaml? Or usb-hcd.yaml.
> 
It should be usb-xhci.yaml. thanks.

>> +  power-domain-names:
>> +    items:
>> +      - const: xusb_host
>> +      - const: xusb_ss
> 
> Drop 'xusb_'.

The properties are constant and we use the name to get the power domain.

	tegra->genpd_dev_host = dev_pm_domain_attach_by_name(dev, "xusb_host");
	
	tegra->genpd_dev_ss = dev_pm_domain_attach_by_name(dev, "xusb_ss");
	
we might not be able to drop the xusb_

thanks,
Wayne.