[v3,0/6] Add support for RZ/N1 SJA1000 CAN controller

Message

Biju Das July 4, 2022, 7:50 a.m. UTC

This patch series aims to add support for RZ/N1 SJA1000 CAN controller.

The SJA1000 CAN controller on RZ/N1 SoC has some differences compared
to others like it has no clock divider register (CDR) support and it has
no HW loopback (HW doesn't see tx messages on rx), so introduced a new
compatible 'renesas,rzn1-sja1000' to handle these differences.

v2->v3:
 * Added reg-io-width is a required property for technologic,sja1000 & renesas,rzn1-sja1000
 * Removed enum type from nxp,tx-output-config and updated the description
   for combination of TX0 and TX1.
 * Updated the example for technologic,sja1000
v1->v2:
 * Moved $ref: can-controller.yaml# to top along with if conditional to
   avoid multiple mapping issues with the if conditional in the subsequent
   patch.
 * Added an example for RZ/N1D SJA1000 usage.
 * Updated commit description for patch#2,#3 and #6
 * Removed the quirk macro SJA1000_NO_HW_LOOPBACK_QUIRK
 * Added prefix SJA1000_QUIRK_* for quirk macro.
 * Replaced of_device_get_match_data->device_get_match_data.
 * Added error handling on clk error path
 * Started using "devm_clk_get_optional_enabled" for clk get,prepare and enable.

Ref:
 [1] https://lore.kernel.org/linux-renesas-soc/[e-mail]/T/#t

Biju Das (6):
  dt-bindings: can: sja1000: Convert to json-schema
  dt-bindings: can: nxp,sja1000: Document RZ/N1{D,S} support
  can: sja1000: Add Quirk for RZ/N1 SJA1000 CAN controller
  can: sja1000: Use device_get_match_data to get device data
  can: sja1000: Change the return type as void for SoC specific init
  can: sja1000: Add support for RZ/N1 SJA1000 CAN Controller

 .../bindings/net/can/nxp,sja1000.yaml         | 138 ++++++++++++++++++
 .../devicetree/bindings/net/can/sja1000.txt   |  58 --------
 drivers/net/can/sja1000/sja1000.c             |  13 +-
 drivers/net/can/sja1000/sja1000.h             |   3 +-
 drivers/net/can/sja1000/sja1000_platform.c    |  56 ++++---
 5 files changed, 186 insertions(+), 82 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/can/nxp,sja1000.yaml
 delete mode 100644 Documentation/devicetree/bindings/net/can/sja1000.txt