linux-kernel - Re: [PATCH v2 07/10] phy: qualcomm: qmp-combo: Update QMP PHY with Glymur settings

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Message-ID: <5a6b3a3e-c6f6-ba39-9edf-eab3e1815862@oss.qualcomm.com>
Date: Wed, 24 Sep 2025 19:14:41 -0700
From: Wesley Cheng <wesley.cheng@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: krzk+dt@...nel.org, conor+dt@...nel.org, kishon@...nel.org,
        vkoul@...nel.org, gregkh@...uxfoundation.org, robh@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 07/10] phy: qualcomm: qmp-combo: Update QMP PHY with
 Glymur settings



On 9/24/2025 6:30 PM, Dmitry Baryshkov wrote:
> On Wed, Sep 24, 2025 at 05:52:25PM -0700, Wesley Cheng wrote:
>> For SuperSpeed USB to work properly, there is a set of HW settings that
>> need to be programmed into the USB blocks within the QMP PHY.  Ensure that
>> these settings follow the latest settings mentioned in the HW programming
>> guide.  The QMP USB PHY on Glymur is a USB43 based PHY that will have some
>> new ways to define certain registers, such as the replacement of TXA/RXA
>> and TXB/RXB register sets.  This was replaced with the LALB register set.
>>
>> There are also some PHY init updates to modify the PCS MISC register space.
>> Without these, the QMP PHY PLL locking fails.
>>
>> Signed-off-by: Wesley Cheng <wesley.cheng@....qualcomm.com>
>> ---
>>   drivers/phy/qualcomm/phy-qcom-qmp-combo.c     | 311 ++++++++-
>>   .../phy/qualcomm/phy-qcom-qmp-pcs-aon-v6.h    |  12 +
>>   .../phy/qualcomm/phy-qcom-qmp-pcs-aon-v8.h    |  17 +
>>   .../phy/qualcomm/phy-qcom-qmp-pcs-misc-v5.h   |  12 +
>>   .../qualcomm/phy-qcom-qmp-qserdes-lalb-v8.h   | 639 ++++++++++++++++++
>>   .../phy/qualcomm/phy-qcom-qmp-usb43-pcs-v8.h  |  33 +
>>   .../phy-qcom-qmp-usb43-qserdes-com-v8.h       | 224 ++++++
>>   drivers/phy/qualcomm/phy-qcom-qmp.h           |   4 +
> 
> I think yo've squashed too many changes here. V5 and V6 headers should
> be a part of the previous patch.
> 

Hmm, not sure what went wrong there, but I will fix it shortly and 
submit as v3.

>>   8 files changed, 1251 insertions(+), 1 deletion(-)
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-pcs-aon-v6.h
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-pcs-aon-v8.h
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-pcs-misc-v5.h
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-qserdes-lalb-v8.h
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-usb43-pcs-v8.h
>>   create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-usb43-qserdes-com-v8.h
>>