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Re: [PATCH v4 1/1] hw/arm/sbsa-ref: use XHCI to replace EHCI


From: Chen Baozi
Subject: Re: [PATCH v4 1/1] hw/arm/sbsa-ref: use XHCI to replace EHCI
Date: Mon, 19 Jun 2023 23:24:00 +0800


> On Jun 19, 2023, at 18:28, Peter Maydell <peter.maydell@linaro.org> wrote:
> 
> On Wed, 7 Jun 2023 at 08:25, Chen Baozi <chenbaozi@phytium.com.cn> wrote:
>> 
>> 
>>> On Jun 7, 2023, at 10:33, Yuquan Wang <wangyuquan1236@phytium.com.cn> wrote:
>>> 
>>> The current sbsa-ref cannot use EHCI controller which is only
>>> able to do 32-bit DMA, since sbsa-ref doesn't have RAM below 4GB.
>>> Hence, this uses system bus XHCI to provide a usb controller with
>>> 64-bit DMA capablity instead of EHCI.
>>> 
>>> Signed-off-by: Yuquan Wang <wangyuquan1236@phytium.com.cn>
>> 
>> Signed-off-by: Chen Baozi <chenbaozi@phytium.com.cn 
>> <mailto:chenbaozi@phytium.com.cn>>
> 
> Hi; why have you added yourself as a Signed-off-by: here?
> Did you do the work jointly with Yuquan? Or did you intend
> to provide some other tag (like a reviewed-by or a tested-by?)

Oh yes, we are. And I asked him to send this patch upstream after we have 
worked it
out internally first.

Cheers,

Baozi.



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