On 24.06.2021 05:19:54, Kurt Van Dijck wrote:
> Signed-off-by: Kurt Van Dijck <dev.kurt@xxxxxxxxxxxxxxxxxxxxxx>
> ---
> can-calc-bit-timing.c | 33 +++++++++++++++++++++++++++++++++
> 1 file changed, 33 insertions(+)
>
> diff --git a/can-calc-bit-timing.c b/can-calc-bit-timing.c
> index d0626f7..fd37886 100644
> --- a/can-calc-bit-timing.c
> +++ b/can-calc-bit-timing.c
> @@ -307,6 +307,23 @@ static void printf_btr_c_can(struct can_bittiming *bt, bool hdr)
> }
> }
>
> +static void printf_btr_mcan(struct can_bittiming *bt, bool hdr)
> +{
> + if (hdr) {
> + printf("%10s", "NBTP");
> + } else {
> + uint32_t nbtp;
> +
> +
> + nbtp = (((bt->brp -1) & 0x1ff) << 16) |
> + (((bt->sjw -1) & 0x7f) << 25) |
> + (((bt->prop_seg + bt->phase_seg1 -1) & 0xff) << 8) |
> + (((bt->phase_seg2 -1) & 0x7f) << 0);
> +
> + printf("0x%08x", nbtp);
> + }
> +}
> +
> static struct calc_bittiming_const can_calc_consts[] = {
> {
> .bittiming_const = {
> @@ -483,6 +500,22 @@ static struct calc_bittiming_const can_calc_consts[] = {
> { .clk = 24000000, },
> },
> .printf_btr = printf_btr_c_can,
> + }, {
> + .bittiming_const = {
> + .name = "mcan",
This is for mcan > v3.1
> + .tseg1_min = 1,
> + .tseg1_max = 256,
> + .tseg2_min = 1,
I just re-chcked the datasheet, and tseg{1,2} min are actually 2.
> + .tseg2_max = 128,
> + .sjw_max = 128,
> + .brp_min = 1,
> + .brp_max = 512,
> + .brp_inc = 1,
> + },
> + .ref_clk = {
> + { .clk = 40000000, },
> + },
> + .printf_btr = printf_btr_mcan,
> },
> };
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung West/Dortmund | Phone: +49-231-2826-924 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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