linux-kernel - Re: [PATCH v8 0/3] Support for USB DRD PHY driver for NS2

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Date:   Fri, 9 Jun 2017 16:23:40 +0530
From:   Raviteja Garimella <raviteja.garimella@...adcom.com>
To:     Kishon Vijay Abraham I <kishon@...com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Jon Mason <jonmason@...adcom.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 0/3] Support for USB DRD PHY driver for NS2

Hi Kishon,

On Fri, Jun 9, 2017 at 2:36 PM, Kishon Vijay Abraham I <kishon@...com> wrote:
> Hi,
>
> On Friday 09 June 2017 02:30 PM, Raviteja Garimella wrote:
>> Hi,
>>
>> On Fri, Jun 9, 2017 at 2:25 PM, Kishon Vijay Abraham I <kishon@...com> wrote:
>>> Hi,
>>>
>>> On Thursday 08 June 2017 04:05 PM, Raviteja Garimella wrote:
>>>> Changes in v8:
>>>> =============
>>>> -Renamed phy shutdown routine
>>>> -Used devm_request_irq in stead of threaded irq
>>>
>>> That's not what I intended. Continue to use threaded irq but remove delayed work.
>>>
>>
>> Yes I get that. We see intermittent connection issues without delayed
>> work. Debounce delay matters there.
>
> All right!
>
> I'm unable to apply the series. Please rebase to linux-phy next (directory
> structure has changed)
>

Ok. They got applied to linux-phy next for me without issues.
I will resend the patchset anyways after rebasing to linux-phy next.

Thanks,
Ravi

> Thanks
> Kishon
>>
>> Thanks,
>> Ravi
>>
>>> Thanks
>>> Kishon
>>>> -Removed devm_unregister calls in probe routine
>>>>
>>>> Changes in v7:
>>>> =============
>>>> Cleaned up unused variables in phy private data structure that's
>>>> missed out in v6.
>>>> Setting of phy mode to device/host is removed from phy power on.
>>>> routine.
>>>>
>>>> Changes in v6:
>>>> =============
>>>> Removed spin locks which are not required as the references
>>>> to phy_ops in the same driver were removed in v5.
>>>>
>>>> Removed host/device 'notify' routines which are registered
>>>> using 'extcon_register_notifier'. The irq handler is sufficient
>>>> to deal with the change in extcon events within the same driver.
>>>>
>>>> Changes in v5:
>>>> =============
>>>> Removed references to phy_ops in the same driver by connect_work
>>>> event handler to change the phy modes.
>>>>
>>>> To support dynamically changing the mode of the phy, it does
>>>> not require doing a phy reset/programming of PHY PLL. Changes
>>>> are made to the connect_work routine to just program the required
>>>> register bits to achieve this purpose.
>>>>
>>>> Changes in v4:
>>>> =============
>>>> Remove references to edev->name in debug prints.
>>>>
>>>> Changes in v3:
>>>> =============
>>>> Remove unnecessary checks for poweron as suggested in review.
>>>>
>>>> Changes in v2:
>>>> =============
>>>> 1. Initialize file operations .owner field with THIS_MODULE.
>>>> 2. Remove unnecessary gpio example in DT bindings documentation.
>>>>    This is previously acked by Rob Herring <robh@...nel.org>
>>>>
>>>> Introduction for PATCH v1:
>>>>
>>>> This patch adds support for USB Dual Role Device Phy for Broadcom
>>>> Northstar2 SoC. Apart from the new phy driver, this patchset contains
>>>> changes to Kconfig, Makefile, and Device tree files.
>>>>
>>>> This patchset is tested on Broadcom NS2 BCM958712K reference board.
>>>>
>>>> Repo: https://github.com/Broadcom/arm64-linux.git
>>>> Branch: ns2_drdphy_v8
>>>>
>>>> Raviteja Garimella (3):
>>>>   dt-bindings: phy: Add DT bindings documentation for NS2 USB DRD PHY
>>>>   phy: phy-bcm-ns2-usbdrd: Broadcom USB DRD PHY driver for Northstar2
>>>>   arm64: dts: NS2: Add USB DRD PHY device tree node
>>>>
>>>>  .../devicetree/bindings/phy/brcm,ns2-drd-phy.txt   |  30 ++
>>>>  arch/arm64/boot/dts/broadcom/ns2.dtsi              |  14 +
>>>>  drivers/phy/Kconfig                                |  13 +
>>>>  drivers/phy/Makefile                               |   1 +
>>>>  drivers/phy/phy-bcm-ns2-usbdrd.c                   | 437 +++++++++++++++++++++
>>>>  5 files changed, 495 insertions(+)
>>>>  create mode 100644 Documentation/devicetree/bindings/phy/brcm,ns2-drd-phy.txt
>>>>  create mode 100644 drivers/phy/phy-bcm-ns2-usbdrd.c
>>>>