Re: [RFC PATCH] usb/acpi: Add support usb port power off mechanism for device fixed on the motherboard

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To: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
Subject: Re: [RFC PATCH] usb/acpi: Add support usb port power off mechanism for device fixed on the motherboard
From: Peter Stuge <peter@xxxxxxxx>
Date: Fri, 11 May 2012 23:09:40 +0200
Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>, Lan Tianyu <tianyu.lan@xxxxxxxxx>, lenb@xxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, linux-usb@xxxxxxxxxxxxxxx
In-reply-to: <20120511201124.GF18754@xanatos>
Mail-followup-to: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>, Lan Tianyu <tianyu.lan@xxxxxxxxx>, lenb@xxxxxxxxxx, linux-acpi@xxxxxxxxxxxxxxx, linux-usb@xxxxxxxxxxxxxxx

Sarah Sharp wrote:
> Theoretically there's no maximum number for xHCI root ports

Hm? Please clarify this?

HCSPARAMS1 MaxPorts is 8 bits and "Valid values are in the range of
1h to FFh."


//Peter
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- Re: [RFC PATCH] usb/acpi: Add support usb port power off mechanism for device fixed on the motherboard
  - From: Lan Tianyu
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