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SubjectRe: [PATCH v3 0/2] Common SerDes driver for TI's Keystone Platforms
On 10/21/2015 08:56 AM, WingMan Kwok wrote:
> On TI's Keystone platforms, several peripherals such as the
> gbe ethernet switch, 10gbe ethernet switch and PCIe controller
> require the use of a SerDes for converting SoC parallel data into
> serialized data that can be output over a high-speed electrical
> interface, and also converting high-speed serial input data
> into parallel data that can be processed by the SoC. The
> SerDeses used by those peripherals, though they may be different,
> are largely similar in functionality and setup.
>
> This patch series provides a SerDes phy driver implementation that can be
> used by the above mentioned peripheral drivers to configure their
> respective SerDeses.
>
> As an example of the using the SerDes driver, this patch series also
> updates the Keystone PCIe host driver to enable and use its SerDes block.
>
> References:
> [1] KeyStone II Architecture Serializer/Deserializer (SerDes) User's Guide
> (http://www.ti.com/lit/ug/spruho3a/spruho3a.pdf)
>
> v3:
> - addresses the following review comments
> 1. https://lkml.org/lkml/2015/10/19/756
> -- included sizes.h
> 2. https://lkml.org/lkml/2015/10/19/781
> -- updated base on Fengguang Wu's suggestions.
> 3. https://lkml.org/lkml/2015/10/15/896
> -- clarified here https://lkml.org/lkml/2015/10/20/512
> -- nothing to do.
>
> v2:
> - addresses the following review comments on v1:
> 1. https://lkml.org/lkml/2015/10/15/896
> -- this does not address the question:
> "The current code does not do this when compiled,
> which might be a problem for distributors.
> Can you clarify the license?"
> -- the question is still under discussion here:
> https://lkml.org/lkml/2015/10/19/471
> 2. https://lkml.org/lkml/2015/10/15/895
>
> v1:
> - addresses the following review comments
> 1. https://lkml.org/lkml/2015/10/13/803
> 2. https://lkml.org/lkml/2015/10/14/613
> 3. https://lkml.org/lkml/2015/10/13/818
>
> - An update to PCIe dts bindings to enable the PCIe SerDes is
> submitted in a separate patch.
>
> WingMan Kwok (2):
> phy: keystone: serdes driver for gbe 10gbe and pcie
> PCI: keystone: update to use generic keystone serdes driver
>
> Documentation/devicetree/bindings/phy/ti-phy.txt | 239 +++
> drivers/pci/host/pci-keystone.c | 24 +-
> drivers/pci/host/pci-keystone.h | 1 +
> drivers/phy/Kconfig | 8 +
> drivers/phy/Makefile | 1 +
> drivers/phy/phy-keystone-serdes.c | 2366 ++++++++++++++++++++++
> 6 files changed, 2629 insertions(+), 10 deletions(-)
> create mode 100644 drivers/phy/phy-keystone-serdes.c
>
Kishon, Bjorn

Who will pick this up? Do we have time to get this in 4.4?
--
Murali Karicheri
Linux Kernel, Keystone


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