Thread (23 messages) 23 messages, 4 authors, 2026-01-16

Re: [PATCH v2 4/4] can: rcar_canfd: Add RZ/T2H support

From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Date: 2026-01-16 09:09:05
Also in: linux-can, linux-renesas-soc, lkml

Hi Geert,

On Wed, Jan 7, 2026 at 4:37 PM Geert Uytterhoeven [off-list ref] wrote:
Hi Prabhakar,

On Tue, 30 Dec 2025 at 12:58, Prabhakar [off-list ref] wrote:
quoted
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

The CAN-FD IP on the RZ/T2H SoC is similar to R-Car Gen4, but differs in
the AFLPN and CFTML bits and supports two channels with eight interrupts.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Thanks for your patch!

LGTM, so
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

However, compared to other SoCs, CFDCnNCFG.NSJW[6:0] has:

    0x00: Setting prohibited

Perhaps this is a documentation issue, as the same limitation was
dropped in RZ/V2H Hardware User Manual Rev.1.30?
I got confirmation from the HW team that it's a typo. Similar to
RZ/V2H, setting it to 0x00 results in 1 Tq and this shall be reflected
in the next UM update.

Cheers,
Prabhakar
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