linux-kernel - [PATCH 0/4] CAN TRANSCEIVER: Add support for CAN transceivers

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Date:   Fri, 9 Apr 2021 19:10:50 +0530
From:   Aswath Govindraju <a-govindraju@...com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Vignesh Raghavendra <vigneshr@...com>,
        Kishon Vijay Abraham I <kishon@...com>,
        Lokesh Vutla <lokeshvutla@...com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Aswath Govindraju <a-govindraju@...com>,
        Chandrasekar Ramakrishnan <rcsekar@...sung.com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Vinod Koul <vkoul@...nel.org>,
        Sriram Dash <sriram.dash@...sung.com>,
        <linux-can@...r.kernel.org>, <netdev@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>
Subject: [PATCH 0/4] CAN TRANSCEIVER: Add support for CAN transceivers

The following series of patches add support for CAN transceivers.

TCAN1042 has a standby signal that needs to be pulled high for
sending/receiving messages[1]. TCAN1043 has a enable signal along with
standby signal that needs to be pulled up for sending/receiving
messages[2], and other combinations of the two lines can be used to put the
transceiver in different states to reduce power consumption. On boards
like the AM654-idk and J721e-evm these signals are controlled using gpios.

Patch 1 models the transceiver as a phy device tree node with properties
for max bit rate supported, gpio properties for indicating gpio pin numbers
to which standby and enable signals are connected.

Patch 2 adds a generic driver to support CAN transceivers.

Patches 3 & 4 add support for implementing the transceiver as a phy of
m_can_platform driver.

Aswath Govindraju (2):
  dt-bindings: phy: Add binding for TI TCAN104x CAN transceivers
  phy: phy-can-transceiver: Add support for generic CAN transceiver
    driver

Faiz Abbas (2):
  dt-bindings: net: can: Document transceiver implementation as phy
  can: m_can_platform: Add support for transceiver as phy

 .../bindings/net/can/bosch,m_can.yaml         |   6 +
 .../bindings/phy/ti,tcan104x-can.yaml         |  56 +++++++
 drivers/net/can/m_can/m_can_platform.c        |  25 ++++
 drivers/phy/Kconfig                           |   9 ++
 drivers/phy/Makefile                          |   1 +
 drivers/phy/phy-can-transceiver.c             | 140 ++++++++++++++++++
 6 files changed, 237 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml
 create mode 100644 drivers/phy/phy-can-transceiver.c

-- 
2.17.1