Thread (17 messages) 17 messages, 6 authors, 2015-11-09

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

From: Kishon Vijay Abraham I <hidden>
Date: 2015-05-20 13:09:14
Also in: linux-arm-msm, linux-devicetree, linux-pci, lkml

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:
quoted
On 05/04/2015 05:35 PM, Kishon Vijay Abraham I wrote:
quoted
Hi,

On Monday 04 May 2015 06:12 PM, Stanimir Varbanov wrote:
quoted
Add a PCIe PHY driver used by PCIe host controller driver
on Qualcomm SoCs like Snapdragon 805.

Signed-off-by: Stanimir Varbanov <redacted>
---
   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
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