linux-kernel - Re: [PATCH v3 4/5] PCI: epf-mhi: Add support for SA8775P

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Date:   Thu, 26 Oct 2023 17:04:24 +0530
From:   Mrinmay Sarkar <quic_msarkar@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Manivannan Sadhasivam <mani@...nel.org>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <quic_shazhuss@...cinc.com>, <quic_nitegupt@...cinc.com>,
        <quic_ramkri@...cinc.com>, <quic_nayiluri@...cinc.com>,
        <dmitry.baryshkov@...aro.org>, <robh@...nel.org>,
        <quic_krichai@...cinc.com>, <quic_vbadigan@...cinc.com>,
        <quic_parass@...cinc.com>, Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <mhi@...ts.linux.dev>,
        <linux-phy@...ts.infradead.org>
Subject: Re: [PATCH v3 4/5] PCI: epf-mhi: Add support for SA8775P


On 10/26/2023 4:40 PM, Konrad Dybcio wrote:
>
>
> On 10/26/23 07:30, Mrinmay Sarkar wrote:
>>
>> On 10/25/2023 1:26 PM, Manivannan Sadhasivam wrote:
>>> On Thu, Oct 19, 2023 at 05:07:09PM +0530, Mrinmay Sarkar wrote:
>>>> Add support for Qualcomm Snapdragon SA8775P SoC to the EPF driver.
>>>> SA8775P has the PID (0x0306) and supports HDMA. Currently, it has
>>> Is the PID fixed? I thought you just want to reuse the SDXxx PID in the
>>> meantime.
>>>
>>> - Mani
>>
>> The PID for SA8775p EP is not decided yet. So using 0x0306 PID meantime.
> If it's not decided, why should it go upstream then? Would that
> not break the hosts' expectations when the EP device is updated?
>
> Konrad

I don't think it will break the host's functionality. In host side as 
well we are reusing same 0x0306 for SA8775p

--Mrinmay