linux-kernel - [PATCH v4 0/2] can: flexcan: add transceiver capabilities

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Message-Id: <20250222-flexcan-add-transceiver-caps-v4-0-a38dfadab763@liebherr.com>
Date: Sat, 22 Feb 2025 08:43:12 +0100
From: Dimitri Fedrau via B4 Relay <devnull+dimitri.fedrau.liebherr.com@...nel.org>
To: Marc Kleine-Budde <mkl@...gutronix.de>, 
 Vincent Mailhol <mailhol.vincent@...adoo.fr>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-can@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, Dimitri Fedrau <dimitri.fedrau@...bherr.com>, 
 Dimitri Fedrau <dima.fedrau@...il.com>, 
 Conor Dooley <conor.dooley@...rochip.com>
Subject: [PATCH v4 0/2] can: flexcan: add transceiver capabilities

Currently the flexcan driver does only support adding PHYs by using the
"old" regulator bindings. Add support for CAN transceivers as a PHY. Add
the capability to ensure that the PHY is in operational state when the link
is set to an "up" state.

Signed-off-by: Dimitri Fedrau <dimitri.fedrau@...bherr.com>
---
Changes in v4:
- Dropped "if: required: phys" in bindings
- Link to v3: https://lore.kernel.org/r/20250221-flexcan-add-transceiver-caps-v3-0-a947bde55a62@liebherr.com

Changes in v3:
- Have xceiver-supply or phys properties in bindings
- Switch do dev_err_probe in flexcan_probe when checking error of call
  devm_phy_optional_get
- Link to v2: https://lore.kernel.org/r/20250220-flexcan-add-transceiver-caps-v2-0-a81970f11846@liebherr.com

Changes in v2:
- Rename variable xceiver to transceiver in struct flexcan_priv and in
  flexcan_probe
- Set priv->can.bitrate_max if transceiver is found
- Fix commit messages which claim that transceivers are not supported
- Do not print error on EPROBE_DEFER after calling devm_phy_optional_get in
  flexcan_probe
- Link to v1: https://lore.kernel.org/r/20250211-flexcan-add-transceiver-caps-v1-0-c6abb7817b0f@liebherr.com

---
Dimitri Fedrau (2):
      dt-bindings: can: fsl,flexcan: add transceiver capabilities
      can: flexcan: add transceiver capabilities

 .../devicetree/bindings/net/can/fsl,flexcan.yaml   |  9 ++++++++
 drivers/net/can/flexcan/flexcan-core.c             | 27 +++++++++++++++++-----
 drivers/net/can/flexcan/flexcan.h                  |  1 +
 3 files changed, 31 insertions(+), 6 deletions(-)
---
base-commit: 6a24171b9625471abfc90c7b28c4b45bee64b3a4
change-id: 20241209-flexcan-add-transceiver-caps-7cff9400c926

Best regards,
-- 
Dimitri Fedrau <dimitri.fedrau@...bherr.com>