linux-kernel - [PATCH net-next 0/5] Add PPS support to am65-cpts driver

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Date:   Wed, 11 Jan 2023 17:14:24 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski@...aro.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <nm@...com>,
        <kristo@...nel.org>, <vigneshr@...com>, <rogerq@...nel.org>,
        <nsekhar@...com>
CC:     <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>,
        <s-vadapalli@...com>
Subject: [PATCH net-next 0/5] Add PPS support to am65-cpts driver

The CPTS hardware doesn't support PPS signal generation. Using the GenFx
(periodic signal generator) function, it is possible to model a PPS signal
followed by routing it via the time sync router to the CPTS_HWy_TS_PUSH
(hardware time stamp) input, in order to generate timestamps at 1 second
intervals.

This series adds driver support for enabling PPS signal generation.
Additionally, the documentation for the am65-cpts driver is updated with
the bindings for the "ti,pps" property, which is used to inform the
pair [CPTS_HWy_TS_PUSH, GenFx] to the cpts driver. The PPS example is
enabled for AM625-SK board by default, by adding the timesync_router node
to the AM62x SoC, and configuring it for PPS in the AM625-SK board dts.

Grygorii Strashko (3):
  dt-binding: net: ti: am65x-cpts: add 'ti,pps' property
  net: ethernet: ti: am65-cpts: add pps support
  net: ethernet: ti: am65-cpts: adjust pps following ptp changes

Siddharth Vadapalli (2):
  arm64: dts: ti: k3-am62-main: Add timesync router node
  arm64: dts: ti: k3-am625-sk: Add cpsw3g cpts PPS support

 .../bindings/net/ti,k3-am654-cpts.yaml        |   8 +
 arch/arm64/boot/dts/ti/k3-am62-main.dtsi      |   9 ++
 arch/arm64/boot/dts/ti/k3-am625-sk.dts        |  20 +++
 drivers/net/ethernet/ti/am65-cpts.c           | 144 ++++++++++++++++--
 4 files changed, 166 insertions(+), 15 deletions(-)

-- 
2.25.1