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[v3,0/3] Add 16GT/s equalization and margining settings

Message ID 20240419001013.28788-1-quic_schintav@quicinc.com (mailing list archive)
Headers show
Series Add 16GT/s equalization and margining settings | expand

Message

Shashank Babu Chinta Venkata April 19, 2024, 12:09 a.m. UTC
Add 16GT/s specific equalization and rx lane margining settings. These
settings are inline with respective PHY settings for 16GT/s 
operation. 

In addition, current QCOM EP and RC drivers do not share common
codebase which would result in code duplication. Hence, adding
common files for code reusability among RC and EP drivers.

v2 -> v3:
- Replaced FIELD_GET/FIELD_PREP macros for bit operations.
- Renamed cmn to common.
- Avoided unnecessary argument validations.
- Addressed review comments from Konrad and Mani.

v1 -> v2:
- Capitilized commit message to be inline with history 
- Dropped stubs from header file.
- Moved Designware specific register offsets and masks to
  pcie-designware.h header file.
- Applied settings based on bus data rate rather than link generation.
- Addressed review comments from Bjorn and Frank.

Shashank Babu Chinta Venkata (3):
  PCI: qcom: Refactor common code
  PCI: qcom: Add equalization settings for 16GT/s
  PCI: qcom: Add rx margining settings for 16GT/s

 drivers/pci/controller/dwc/Kconfig            |   5 +
 drivers/pci/controller/dwc/Makefile           |   1 +
 drivers/pci/controller/dwc/pcie-designware.h  |  30 ++++
 drivers/pci/controller/dwc/pcie-qcom-common.c | 129 ++++++++++++++++++
 drivers/pci/controller/dwc/pcie-qcom-common.h |  14 ++
 drivers/pci/controller/dwc/pcie-qcom-ep.c     |  44 ++----
 drivers/pci/controller/dwc/pcie-qcom.c        |  72 ++--------
 7 files changed, 201 insertions(+), 94 deletions(-)
 create mode 100644 drivers/pci/controller/dwc/pcie-qcom-common.c
 create mode 100644 drivers/pci/controller/dwc/pcie-qcom-common.h

Comments

Niklas Cassel April 19, 2024, 7:36 a.m. UTC | #1
On Thu, Apr 18, 2024 at 05:09:33PM -0700, Shashank Babu Chinta Venkata wrote:
> Add 16GT/s specific equalization and rx lane margining settings. These
> settings are inline with respective PHY settings for 16GT/s 
> operation. 
> 
> In addition, current QCOM EP and RC drivers do not share common
> codebase which would result in code duplication. Hence, adding
> common files for code reusability among RC and EP drivers.
> 
> v2 -> v3:
> - Replaced FIELD_GET/FIELD_PREP macros for bit operations.
> - Renamed cmn to common.
> - Avoided unnecessary argument validations.
> - Addressed review comments from Konrad and Mani.
> 
> v1 -> v2:
> - Capitilized commit message to be inline with history 
> - Dropped stubs from header file.
> - Moved Designware specific register offsets and masks to
>   pcie-designware.h header file.
> - Applied settings based on bus data rate rather than link generation.
> - Addressed review comments from Bjorn and Frank.
> 
> Shashank Babu Chinta Venkata (3):
>   PCI: qcom: Refactor common code
>   PCI: qcom: Add equalization settings for 16GT/s
>   PCI: qcom: Add rx margining settings for 16GT/s
> 
>  drivers/pci/controller/dwc/Kconfig            |   5 +
>  drivers/pci/controller/dwc/Makefile           |   1 +
>  drivers/pci/controller/dwc/pcie-designware.h  |  30 ++++
>  drivers/pci/controller/dwc/pcie-qcom-common.c | 129 ++++++++++++++++++
>  drivers/pci/controller/dwc/pcie-qcom-common.h |  14 ++
>  drivers/pci/controller/dwc/pcie-qcom-ep.c     |  44 ++----
>  drivers/pci/controller/dwc/pcie-qcom.c        |  72 ++--------
>  7 files changed, 201 insertions(+), 94 deletions(-)
>  create mode 100644 drivers/pci/controller/dwc/pcie-qcom-common.c
>  create mode 100644 drivers/pci/controller/dwc/pcie-qcom-common.h
> 
> -- 
> 2.43.2
> 

FWIW: I think the subject of the cover-letter should have been prefixed with:
"PCI: qcom: "


Kind regards,
Niklas