linux-kernel - Re: [PATCH 1/9] dt-bindings: phy: qcom,uniphy: Rename ipq4019 usb PHY to UNIPHY

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Message-ID: <4e9a43c5-43ec-4a07-9053-366a517f5c54@quicinc.com>
Date:   Thu, 31 Aug 2023 17:59:57 +0530
From:   Praveenkumar I <quic_ipkumar@...cinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
CC:     <robert.marko@...tura.hr>, <luka.perkov@...tura.hr>,
        <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <gregkh@...uxfoundation.org>, <catalin.marinas@....com>,
        <will@...nel.org>, <p.zabel@...gutronix.de>, <arnd@...db.de>,
        <geert+renesas@...der.be>, <nfraprado@...labora.com>,
        <rafal@...ecki.pl>, <peng.fan@....com>, <quic_wcheng@...cinc.com>,
        <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>, <quic_varada@...cinc.com>
Subject: Re: [PATCH 1/9] dt-bindings: phy: qcom,uniphy: Rename ipq4019 usb PHY
 to UNIPHY


On 8/31/2023 5:47 PM, Dmitry Baryshkov wrote:
> On Thu, 31 Aug 2023 at 14:54, Praveenkumar I <quic_ipkumar@...cinc.com> wrote:
>>
>> On 8/29/2023 7:49 PM, Dmitry Baryshkov wrote:
>>> On Tue, 29 Aug 2023 at 16:59, Praveenkumar I <quic_ipkumar@...cinc.com> wrote:
>>>> UNIPHY / Combo PHY used on various qualcomm SoC's are very similar to
>>>> ipq4019 PHY. Hence renaming this dt-binding to uniphy dt-binding and
>>>> can be used for other qualcomm SoCs which are having similar UNIPHY.
>>>>
>>>> Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
>>>> ---
>>>>    .../phy/{qcom-usb-ipq4019-phy.yaml => qcom,uniphy.yaml}  | 9 +++++++--
>>>>    1 file changed, 7 insertions(+), 2 deletions(-)
>>>>    rename Documentation/devicetree/bindings/phy/{qcom-usb-ipq4019-phy.yaml => qcom,uniphy.yaml} (78%)
>>>>
>>>> diff --git a/Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
>>>> similarity index 78%
>>>> rename from Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
>>>> rename to Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
>>>> index 09c614952fea..cbe2cc820009 100644
>>>> --- a/Documentation/devicetree/bindings/phy/qcom-usb-ipq4019-phy.yaml
>>>> +++ b/Documentation/devicetree/bindings/phy/qcom,uniphy.yaml
>>>> @@ -1,13 +1,18 @@
>>>>    # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>>>    %YAML 1.2
>>>>    ---
>>>> -$id: http://devicetree.org/schemas/phy/qcom-usb-ipq4019-phy.yaml#
>>>> +$id: http://devicetree.org/schemas/phy/qcom,uniphy.yaml#
>>>>    $schema: http://devicetree.org/meta-schemas/core.yaml#
>>>>
>>>> -title: Qualcom IPQ40xx Dakota HS/SS USB PHY
>>>> +title: Qualcomm UNIPHY
>>> We know that UNIPHY was a common design / IP block used for APQ8064
>>> SATA and MSM8974 DSI and HDMI PHYs. Is this the same design, or was
>>> the name reused by the Qualcomm for some other PHYs?
>>> Several latest generations have USB QMP PHYs which are called 'uni-phy'.
>> This PHY is build on top of QCA Uniphy 22ull. A combo PHY used between
>> USB Gen3 / PCIe Gen3 controller.
>> It is different from USB QMP PHYs.
> So we have now three different items called Qualcomm uniphy. Could you
> please add some distinctive name?
There is one more target called IPQ5018 which is also having similar USB 
PHY built on top of
Uniphy 28nm LP. That also can leverage this upcoming IPQ5332 USB PHY 
driver. Considering that,
given a common name 'uniphy'.

- Praveenkumar
>
>> - Praveenkumar
>>>>    maintainers:
>>>>      - Robert Marko <robert.marko@...tura.hr>
>>>> +  - Praveenkumar I <quic_ipkumar@...cinc.com>
>>>> +
>>>> +description:
>>>> +  UNIPHY / COMBO PHY supports physical layer functionality for USB and PCIe on
>>>> +  Qualcomm chipsets.
>>>>
>>>>    properties:
>>>>      compatible:
>>>> --
>>>> 2.34.1
>>>>
>
>