Re: [PATCH v2 2/5] phy: qcom: Add Qualcomm PCIe PHY

Kishon Vijay Abraham I
2015-05-20T13:08:19Z

Hi Bjorn,

On Wednesday 20 May 2015 04:11 AM, Bjorn Helgaas wrote:
> On Mon, May 04, 2015 at 06:24:10PM +0300, Stanimir Varbanov wrote:
>> On 05/04/2015 05:35 PM, Kishon Vijay Abraham I wrote:
>>> Hi,
>>>
>>> On Monday 04 May 2015 06:12 PM, Stanimir Varbanov wrote:
>>>> Add a PCIe PHY driver used by PCIe host controller driver
>>>> on Qualcomm SoCs like Snapdragon 805.
>>>>
>>>> Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
>>>> ---
>>>> drivers/phy/Kconfig | 9 ++
>>>> drivers/phy/Makefile | 1 +
>>>> drivers/phy/phy-qcom-pcie.c | 291
>>>> +++++++++++++++++++++++++++++++++++++++++++
>>>
>>> Why do you need a new PHY driver for this? Why not use the existing QCOM
>>> PHY driver. I can see the registers used here in phy-qcom-ufs-qmp-14nm.h?
>>
>> I agree that on first glance there are similarities, but I'm not sure
>> does the PHYs are the same IP blocks. Or at least they are different
>> revisions which have too many differences. So trying to combine them
>> will lead to more code than now.
>>
>> Either way I will try to understand how many the differences are.
>
> Ping, where are we with this? Should I wait for something else, or are you
> convinced there's enough difference to warrant a new PHY driver, Kishon?

I'd like to wait to see if Stanimir can use existing driver instead of creating
a new driver.

Cheers
Kishon