linux-kernel - Re: [PATCH v2 1/4] dt-bindings: phy: Add support for QUSB2 phy

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Message-ID: <CAFp+6iGRNyzWWjgQzOFpn8e21qo7XGGxZoSpvbYZ4D-vx6Vxyg@mail.gmail.com>
Date:   Tue, 29 Nov 2016 10:50:59 +0530
From:   Vivek Gautam <vivek.gautam@...eaurora.org>
To:     Rob Herring <robh@...nel.org>
Cc:     kishon <kishon@...com>, Mark Rutland <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 1/4] dt-bindings: phy: Add support for QUSB2 phy

Hi Rob,


On Mon, Nov 28, 2016 at 7:49 PM, Rob Herring <robh@...nel.org> wrote:

Thanks for reviewing the patch.

> On Tue, Nov 22, 2016 at 05:32:40PM +0530, Vivek Gautam wrote:
>> Qualcomm chipsets have QUSB2 phy controller that provides
>> HighSpeed functionality for DWC3 controller.
>> Adding dt binding information for the same.
>>
>> Signed-off-by: Vivek Gautam <vivek.gautam@...eaurora.org>
>> ---
>>
>> Changes since v1:
>>  - New patch, forked out of the original driver patch:
>>    "phy: qcom-qusb2: New driver for QUSB2 PHY on Qcom chips"
>>  - Updated dt bindings to remove 'hstx-trim-bit-offset' and
>>    'hstx-trim-bit-len' bindings.
>>
>>  .../devicetree/bindings/phy/qcom-qusb2-phy.txt     | 55 ++++++++++++++++++++++
>>  1 file changed, 55 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
>>
>> diff --git a/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
>> new file mode 100644
>> index 0000000..38c8b30
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
>> @@ -0,0 +1,55 @@
>> +Qualcomm QUSB2 phy controller
>> +=============================
>> +
>> +QUSB2 controller supports LS/FS/HS usb connectivity on Qualcomm chipsets.
>> +
>> +Required properties:
>> + - compatible: compatible list, contains "qcom,msm8996-qusb2-phy".
>> + - reg: offset and length of the PHY register set.
>> + - #phy-cells: must be 0.
>> +
>> + - clocks: a list of phandles and clock-specifier pairs,
>> +        one for each entry in clock-names.
>> + - clock-names: must be "cfg_ahb" for phy config clock,
>> +                     "ref_clk" for 19.2 MHz ref clk,
>> +                     "ref_clk_src" reference clock source.
>> +                     "iface" for phy interface clock (Optional).
>> +
>> + - vdd-phy-supply: Phandle to a regulator supply to PHY core block.
>> + - vdda-pll-supply: Phandle to 1.8V regulator supply to PHY refclk pll block.
>> + - vdda-phy-dpdm: Phandle to 3.1V regulator supply to Dp/Dm port signals.
>
> Needs '-supply'

sure, will add.

>
>> +
>> + - resets: a list of phandles and reset controller specifier pairs,
>> +        one for each entry in reset-names.
>> + - reset-names: must be "phy" for reset of phy block.
>> +
>> +Optional properties:
>> + - nvmem-cells: a list of phandles to nvmem cells that contain fused
>> +             tuning parameters for qusb2 phy, one for each entry
>> +             in nvmem-cell-names.
>> + - nvmem-cell-names: must be "tune2_hstx_trim_efuse" for cell containing
>> +                  HS Tx trim value.
>> +
>> + - qcom,tcsr-syscon: Phandle to TCSR syscon register region.
>> +
>> +Example:
>> +     hsphy: qusb2phy@...1000 {
>
> usb-phy@...

Or may be just 'phy' for the node name, and then label could be 'usb_hs_phy'?

[...]


Thanks
Vivek

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