[0/2] arm64: dts: renesas: r8a779g0/white-hawk: Add CAN-FD support

Message

Geert Uytterhoeven Jan. 23, 2023, 7:06 p.m. UTC

Hi all,

This patch series enables support for the CAN-FD interface on the Renesas
R-Car V4H (R8A779G0) SoC, and for the first two CAN-FD channels on the
Renesas White-Hawk development board.

While R-Car V4H supports 8 CAN-FD channels, and White-Hawk has
transceivers mounted for the first 4 channels, my test results are
similar to what Ulrich Hecht reported for R-Car V3U on the Falcon
development board before, i.e. only channels 0 and 1 work, and thus this
series enables support for these channels only.  Whether this is a
CAN-FD driver issue, a pin control issue, an IP core issue, or an SoC
integration issue is still to be seen...

For testing, this series and its dependencies can be found at [1].

Thanks for your comments!

[1] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/log/?h=topic/r8a779g0-canfd-v1

Geert Uytterhoeven (2):
  arm64: dts: renesas: r8a779g0: Add CAN-FD node
  arm64: dts: renesas: white-hawk: Add CAN-FD support

 .../boot/dts/renesas/r8a779g0-white-hawk.dts  | 44 ++++++++++++++
 arch/arm64/boot/dts/renesas/r8a779g0.dtsi     | 57 +++++++++++++++++++
 2 files changed, 101 insertions(+)