From: Kishon Vijay Abraham I <kishon@ti.com>
To: Roger Quadros <rogerq@ti.com>
Cc: <nsekhar@ti.com>, <jsarha@ti.com>, <linux-kernel@vger.kernel.org>,
<devicetree@vger.kernel.org>
Subject: Re: [PATCH v5 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support
Date: Wed, 8 Jan 2020 13:12:31 +0530 [thread overview]
Message-ID: <952bd59a-5998-9cc2-d438-4a7185ad480f@ti.com> (raw)
In-Reply-To: <6390dd78-92bd-711b-f153-ae73c959a665@ti.com>
On 06/01/20 6:37 PM, Roger Quadros wrote:
>
>
> 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
merged now, thanks!
-Kishon
>
>> 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(+)
>>
>
prev parent reply other threads:[~2020-01-08 7:40 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-06 13:06 [PATCH v5 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support Roger Quadros
2020-01-06 13:06 ` [PATCH v5 1/3] phy: cadence: Sierra: add phy_reset hook Roger Quadros
2020-01-06 13:06 ` [PATCH v5 2/3] dt-bindings: phy: ti,phy-j721e-wiz: Add Type-C dir GPIO Roger Quadros
2020-01-06 13:06 ` [PATCH v5 3/3] phy: ti: j721e-wiz: Manage typec-gpio-dir Roger Quadros
2020-01-06 13:07 ` [PATCH v5 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support Roger Quadros
2020-01-08 7:42 ` Kishon Vijay Abraham I [this message]
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