linux-kernel - Re: [PATCH v4 06/10] phy: qcom: Add M31 based eUSB2 PHY driver

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Message-ID: <fvbfsvx4ibixnvdh7ujt3kaybjqj3fdla4k5sx6lguegepxipg@ci5nmq36irpr>
Date: Thu, 10 Apr 2025 06:22:53 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Melody Olvera <melody.olvera@....qualcomm.com>
Cc: Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Wesley Cheng <quic_wcheng@...cinc.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 06/10] phy: qcom: Add M31 based eUSB2 PHY driver

On Wed, Apr 09, 2025 at 10:48:17AM -0700, Melody Olvera wrote:
> From: Wesley Cheng <quic_wcheng@...cinc.com>
> 
> SM8750 utilizes an eUSB2 PHY from M31.  Add the initialization
> sequences to bring it out of reset and into an operational state.  This
> differs to the M31 USB driver, in that the M31 eUSB2 driver will
> require a connection to an eUSB2 repeater.  This PHY driver will handle
> the initialization of the associated eUSB2 repeater when required.
> 
> Signed-off-by: Wesley Cheng <quic_wcheng@...cinc.com>
> Signed-off-by: Melody Olvera <melody.olvera@....qualcomm.com>
> ---
>  drivers/phy/qualcomm/Kconfig              |  10 +
>  drivers/phy/qualcomm/Makefile             |   1 +
>  drivers/phy/qualcomm/phy-qcom-m31-eusb2.c | 325 ++++++++++++++++++++++++++++++
>  3 files changed, 336 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>

-- 
With best wishes
Dmitry