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Message-ID: <CAPncsNNQKC_o4ZeP7PcfPWK5X70b5+f3oBNFRYaWcjJj1hPjgw@mail.gmail.com>
Date:   Thu, 29 Apr 2021 09:22:29 +0800
From:   Jarvis Jiang <jarvis.w.jiang@...il.com>
To:     Loic Poulain <loic.poulain@...aro.org>
Cc:     Manivannan Sadhasivam <mani@...nel.org>,
        Hemant Kumar <hemantk@...eaurora.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Chi-Wei Chen50 <cchen50@...ovo.com>,
        Mark Pearson <mpearson@...ovo.com>
Subject: Re: [PATCH v1] bus: mhi: pci_generic: T99W175: update channel name
 from AT to DUN

On Wed, Apr 28, 2021 at 4:30 PM Loic Poulain <loic.poulain@...aro.org> wrote:
>
> On Wed, 21 Apr 2021 at 08:56, Jarvis Jiang <jarvis.w.jiang@...il.com> wrote:
> >
> > According to MHI v1.1 specification, change the channel name of T99W175
> > from "AT" to "DUN" (Dial-up networking) for both channel 32 and 33,
> > so that the channels can be bound to the Qcom WWAN control driver, and
> > device node such as /dev/wwan0p3AT will be generated, which is very useful
> > for debugging modem
> >
> > Signed-off-by: Jarvis Jiang <jarvis.w.jiang@...il.com>
>
> Ok, it seems the spec claims it's a DUN channel, but all vendors use
> it for AT protocol, so it's fine (and correctly handled by the
> mhi_wwan_ctrl driver).
>
> Could you please add a Fixes tag since it fixes your previous commit?
>

Sure, I will add it in the next patch.

thanks,
Jarvis

> with that
>
> Reviewed-by: Loic Poulain <loic.poulain@...aro.org>
>
>
>
> > ---
> >  drivers/bus/mhi/pci_generic.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
> > index 7c810f02a2ef..8c7f6576e421 100644
> > --- a/drivers/bus/mhi/pci_generic.c
> > +++ b/drivers/bus/mhi/pci_generic.c
> > @@ -311,8 +311,8 @@ static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = {
> >         MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
> >         MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
> >         MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
> > -       MHI_CHANNEL_CONFIG_UL(32, "AT", 32, 0),
> > -       MHI_CHANNEL_CONFIG_DL(33, "AT", 32, 0),
> > +       MHI_CHANNEL_CONFIG_UL(32, "DUN", 32, 0),
> > +       MHI_CHANNEL_CONFIG_DL(33, "DUN", 32, 0),
> >         MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 128, 2),
> >         MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
> >  };
> > --
> > 2.25.1
> >

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