linux-kernel - Re: [PATCH V8 0/4] phy: USB and PCIe phy drivers for Qcom chipsets

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Date:   Thu, 6 Apr 2017 17:47:19 +0530
From:   Vivek Gautam <vivek.gautam@...eaurora.org>
To:     Kishon Vijay Abraham I <kishon@...com>, robh+dt@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        mark.rutland@....com, sboyd@...eaurora.org,
        bjorn.andersson@...aro.org, srinivas.kandagatla@...aro.org
Subject: Re: [PATCH V8 0/4] phy: USB and PCIe phy drivers for Qcom chipsets



On 04/06/2017 03:41 PM, Kishon Vijay Abraham I wrote:
>
> On Thursday 06 April 2017 11:21 AM, Vivek Gautam wrote:
>> Hi Kishon,
>> Here's the series with fixed checkpatch warnings/checks.
>> Please pick it for phy/next.
>>
>> This patch series adds couple of PHY drivers for Qualcomm chipsets.
>> a) qcom-qusb2 phy driver: that provides High Speed USB functionality.
>> b) qcom-qmp phy driver: that is a combo phy providing support for
>>     USB3, PCIe, UFS and few other controllers.
>>
>> The patches are based on next branch of linux-phy tree.
>>
>> These patches have been tested on Dragon board db820c hardware with
>> required set of dt patches.
>> The tested branch[3] is based on torvald's master with greg's usb/usb-next
>> merged. Additionally the patches to get rpm up on msm8996 are also pulled
>> in.
> merged, thanks!

Thanks Kishon.

BRs
Vivek

>
> -Kishon
>> Changes since v7:
>>   - Fixed 'checkpatch --strict' alignment warnings/checks, and
>>     added Stephen's Reviewed-by tag.
>>
>> Changes since v6:
>>   - Rebased on phy/next and *not* including phy grouping series[4].
>>   - qusb2-phy: addressed Stephen's comment.
>>     - Dropped pm8994_s2 corner regulator from QUSB2 phy bindings.
>>   - qmp-phy: none on functionality side.
>>   
>> Changes since v5:
>>   - Addressed review comments from Bjorn:
>>     - Removed instances of readl/wirtel_relaxed calls from the drivers.
>>       Instead, using simple readl/writel. Inserting a readl after a writel
>>       to ensure the write is through to the device.
>>     - Replaced regulator handling with regulator_bulk_** apis. This helps
>>       in cutting down a lot of regulator handling code.
>>     - Fixed minor return statements.
>>
>> Changes since v4:
>>   - Addressed comment to add child nodes for qmp phy driver. Each phy lane
>>     now has a separate child node under the main qmp node.
>>   - Modified the clock and reset initialization and enable methods.
>>     Different phys - pcie, usb and later ufs, have varying number of clocks
>>     and resets that are mandatory. So adding provision for clocks and reset
>>     lists helps in requesting all mandatory resources for individual phys
>>     and handle their failure cases accordingly.
>>
>> Changes since v3:
>>   - Addressed review comments given by Rob and Stephen for qusb2 phy
>>     and qmp phy bindings respectively.
>>   - Addressed review comments given by Stephen and Bjorn for qmp phy driver.
>>
>> Changes since v2:
>>   - Addressed review comments given by Rob and Stephen for bindings.
>>   - Addressed the review comments given by Stephen for the qusb2 and qmp
>>     phy drivers.
>>
>> Changes since v1:
>>   - Moved device tree binding documentation to separate patches, as suggested
>>     by Rob.
>>   - Addressed review comment regarding qfprom accesses by qusb2 phy driver,
>>     given by Rob.
>>   - Addressed review comments from Kishon.
>>   - Addressed review comments from Srinivas for QMP phy driver.
>>   - Addressed kbuild warning.
>>
>> Please see individual patches for detailed changelogs.
>>
>> [1] https://patchwork.kernel.org/patch/9567767/
>> [2] https://patchwork.kernel.org/patch/9567779/
>> [3] https://github.com/vivekgautam1/linux/tree/linux-v4.11-rc5-qmp-phy-db820c
>> [4] https://lkml.org/lkml/2017/3/20/407
>>
>> Vivek Gautam (4):
>>    dt-bindings: phy: Add support for QUSB2 phy
>>    phy: qcom-qusb2: New driver for QUSB2 PHY on Qcom chips
>>    dt-bindings: phy: Add support for QMP phy
>>    phy: qcom-qmp: new qmp phy driver for qcom-chipsets
>>
>>   .../devicetree/bindings/phy/qcom-qmp-phy.txt       |  106 ++
>>   .../devicetree/bindings/phy/qcom-qusb2-phy.txt     |   43 +
>>   drivers/phy/Kconfig                                |   18 +
>>   drivers/phy/Makefile                               |    2 +
>>   drivers/phy/phy-qcom-qmp.c                         | 1153 ++++++++++++++++++++
>>   drivers/phy/phy-qcom-qusb2.c                       |  493 +++++++++
>>   6 files changed, 1815 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/phy/qcom-qmp-phy.txt
>>   create mode 100644 Documentation/devicetree/bindings/phy/qcom-qusb2-phy.txt
>>   create mode 100644 drivers/phy/phy-qcom-qmp.c
>>   create mode 100644 drivers/phy/phy-qcom-qusb2.c
>>

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