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Re: [PATCH v3 21/22] phy: Add support for Qualcomm's USB HSIC phy

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On 2016-09-02 03:30, Stephen Boyd wrote:
> (Please trim replies)

sorry, will take care from next time.

> 
> Quoting Vivek Gautam (2016-08-31 23:17:55)
>> On Thu, Sep 1, 2016 at 6:10 AM, Stephen Boyd <stephen.boyd@linaro.org> 
>> wrote:
>> > +
>> > +       uphy->cal_sleep_clk = clk = devm_clk_get(&ulpi->dev, "cal_sleep");
>> > +       if (IS_ERR(clk))
>> > +               return PTR_ERR(clk);
>> > +
>> > +       uphy->phy = devm_phy_create(&ulpi->dev, ulpi->dev.of_node,
>> > +                                   &qcom_usb_hsic_phy_ops);
>> 
>> There's a ulpi_phy library available in  drivers/phy/. Do we want to 
>> use that ?
>> That also creates a phy-lookup of this PHY so that the ulpi device's 
>> parent
>> can request the PHY.
> 
> I don't have any interest in using those two functions (does two
> functions constitute a library?).

Not really.

> There's no devm as you say,

I meant to say that you may need to change the existing APIs to the 
devm_* APIs.

> and it seems to be specific to the ULPI hardware for dwc3 (the only 
> user) where
> the phy is called "usb2-phy".

This was used with TI's USB 2.0 PHY, that has ULPI interface.

> This is a phy for the ChipIdea controller
> which only has one phy and it's called "usb-phy" in that case.

In a way this is also a USB 2.0 phy, isn't it ?

> 
>> 
>> You may want to modify the APIs available in ulpi_phy library to use 
>> the
>> devm_* APIs.
>> 
> 
> The lookup isn't necessary because we use DT to find the lookup. I seem
> to recall the phy framework requiring a DT lookup too.

The lookup created in this ulpi_phy.h was used to help getting the PHY 
in the
driver for parent device (a core wrapper) of the controller (platform 
glue layer) that requests this PHY.
I am not certain at this point about how PHY has to be handled in case 
of Chipidea.
Was just throwing in ideas. :-)


Thanks
Vivek

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Thread

[PATCH v3 00/22] Support qcom's HSIC USB and rewrite USB2 HS phy support Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 06/22] usb: chipidea: Add platform flag for wrapper phy management Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 12/22] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 16/22] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 11/22] usb: chipidea: msm: Mark device as runtime pm active Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 04/22] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 04/22] usb: chipidea: Only read/write OTGSC from one  place Peter Chen <hzpeterchen@gmail.com> - 2016-09-02 05:00 +0200
  [PATCH v3 17/22] usb: chipidea: msm: Make platform data driver local instead of global Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 03/22] usb: ulpi: Support device discovery via device properties Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 03/22] usb: ulpi: Support device discovery via device  properties Heikki Krogerus <heikki.krogerus@linux.intel.com> - 2016-09-02 16:20 +0200
      Re: [PATCH v3 03/22] usb: ulpi: Support device discovery via device properties Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-03 03:20 +0200
  [PATCH v3 20/22] usb: chipidea: msm: Be silent on probe defer errors Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 15/22] usb: chipidea: msm: Mux over secondary phy at the right time Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 13/22] usb: chipidea: msm: Use hw_write_id_reg() instead of writel Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 19/22] usb: chipidea: msm: Handle phy power states Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 22/22] phy: Add support for Qualcomm's USB HS phy Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 05/22] usb: chipidea: Handle extcon events properly Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 01/22] of: device: Support loading a module with OF based modalias Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 02/22] of: device: Export of_device_{get_modalias,uvent_modalias} to modules Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 14/22] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
  [PATCH v3 09/22] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 09/22] usb: chipidea: Add support for ULPI PHY bus Peter Chen <hzpeterchen@gmail.com> - 2016-09-02 05:00 +0200
  [PATCH v3 18/22] usb: chipidea: msm: Add reset controller for PHY POR bit Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 18/22] usb: chipidea: msm: Add reset controller for  PHY POR bit Peter Chen <hzpeterchen@gmail.com> - 2016-09-02 05:50 +0200
  [PATCH v3 10/22] usb: chipidea: Consolidate extcon notifiers Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 10/22] usb: chipidea: Consolidate extcon notifiers Peter Chen <hzpeterchen@gmail.com> - 2016-09-02 05:30 +0200
      Re: [PATCH v3 10/22] usb: chipidea: Consolidate extcon notifiers Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-03 03:10 +0200
        Re: [PATCH v3 10/22] usb: chipidea: Consolidate extcon notifiers Peter Chen <hzpeterchen@gmail.com> - 2016-09-05 04:40 +0200
          Re: [PATCH v3 10/22] usb: chipidea: Consolidate extcon notifiers Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-06 19:50 +0200
  [PATCH v3 21/22] phy: Add support for Qualcomm's USB HSIC phy Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200
    Re: [PATCH v3 21/22] phy: Add support for Qualcomm's USB HSIC phy Vivek Gautam <vivek.gautam@codeaurora.org> - 2016-09-01 08:20 +0200
      Re: [PATCH v3 21/22] phy: Add support for Qualcomm's USB HSIC phy vivek.gautam@codeaurora.org - 2016-09-02 13:30 +0200
  [PATCH v3 07/22] usb: chipidea: Notify events when switching host mode Stephen Boyd <stephen.boyd@linaro.org> - 2016-09-01 02:50 +0200

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