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SubjectRe: [PATCH v5 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support
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On 06/01/2020 15:06, Roger Quadros wrote:
> Hi,
>
> On J721e platform, the 2 lanes of SERDES PHY are used to achieve
> USB Type-C plug flip support without any additional MUX component
> by using a lane swap feature.
>
> However, the driver needs to know the Type-C plug orientation before
> it can decide whether to swap the lanes or not. This is achieved via a
> GPIO named DIR.
>
> Another constraint is that the lane swap must happen only when the PHY
> is in inactive state. This is achieved by sampling the GPIO and
> programming the lane swap before bringing the PHY out of reset.
>
> This series adds support to read the GPIO and accordingly program
> the Lane swap for Type-C plug flip support.
>
> Series must be applied on top of
> https://patchwork.kernel.org/cover/11293671/
>
> cheers,
> -roger
>
> Changelog:
v5
- rebased on phy/next

> v4
> - fixes in dt-binding document
> - fix typo
> - change to typec-dir-debounce-ms and add min/max/default values
> - drop reference to uint32 type
> - fixes in driver
> - change to updated typec-dir-debounce-ms property
> - add limit checks and use default value if not specified
>
> v3
> - Rebase on v2 of PHY series and update DT binding to yaml
>
> v2
> - revise commit log of patch 1
> - use regmap_field in patch 3
>
>
> Roger Quadros (3):
> phy: cadence: Sierra: add phy_reset hook
> dt-bindings: phy: ti,phy-j721e-wiz: Add Type-C dir GPIO
> phy: ti: j721e-wiz: Manage typec-gpio-dir
>
> .../bindings/phy/ti,phy-j721e-wiz.yaml | 17 ++++++
> drivers/phy/cadence/phy-cadence-sierra.c | 10 +++
> drivers/phy/ti/phy-j721e-wiz.c | 61 +++++++++++++++++++
> 3 files changed, 88 insertions(+)
>

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