On 23/10/2019 11:49, 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://lkml.org/lkml/2019/10/16/517 > > cheers, > -roger > > Changelog: > v2 > - revise commit log of patch 1 > - use regmap_field in patch 3 > Reviewed-by: Jyri Sarha <jsarha@xxxxxx> For the whole series. > 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.txt | 9 ++++ > drivers/phy/cadence/phy-cadence-sierra.c | 10 ++++ > drivers/phy/ti/phy-j721e-wiz.c | 48 +++++++++++++++++++ > 3 files changed, 67 insertions(+) > -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
