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

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Message-Id: <cover.1674500205.git.geert+renesas@glider.be>
Date:   Mon, 23 Jan 2023 20:06:17 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Magnus Damm <magnus.damm@...il.com>
Cc:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Ulrich Hecht <uli+renesas@...nd.eu>,
        linux-renesas-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 0/2] arm64: dts: renesas: r8a779g0/white-hawk: Add CAN-FD support

	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(+)

-- 
2.34.1

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds