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    Subject[PATCH 5.18 026/112] can: rcar_canfd: Fix data transmission failed on R-Car V3U
    Date
    From: Duy Nguyen <duy.nguyen.rh@renesas.com>

    commit 374e11f1bde91545674233459e5a0416ba842b69 upstream.

    On R-Car V3U, this driver should use suitable register offset instead of
    other SoCs' one. Otherwise, data transmission failed on R-Car V3U.

    Fixes: 45721c406dcf ("can: rcar_canfd: Add support for r8a779a0 SoC")
    Link: https://lore.kernel.org/all/20220704074611.957191-1-yoshihiro.shimoda.uh@renesas.com
    Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
    Signed-off-by: Duy Nguyen <duy.nguyen.rh@renesas.com>
    Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
    Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    drivers/net/can/rcar/rcar_canfd.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    --- a/drivers/net/can/rcar/rcar_canfd.c
    +++ b/drivers/net/can/rcar/rcar_canfd.c
    @@ -1334,7 +1334,10 @@ static void rcar_canfd_set_bittiming(str
    cfg = (RCANFD_DCFG_DTSEG1(gpriv, tseg1) | RCANFD_DCFG_DBRP(brp) |
    RCANFD_DCFG_DSJW(sjw) | RCANFD_DCFG_DTSEG2(gpriv, tseg2));

    - rcar_canfd_write(priv->base, RCANFD_F_DCFG(ch), cfg);
    + if (is_v3u(gpriv))
    + rcar_canfd_write(priv->base, RCANFD_V3U_DCFG(ch), cfg);
    + else
    + rcar_canfd_write(priv->base, RCANFD_F_DCFG(ch), cfg);
    netdev_dbg(priv->ndev, "drate: brp %u, sjw %u, tseg1 %u, tseg2 %u\n",
    brp, sjw, tseg1, tseg2);
    } else {

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