Thread (15 messages) flat view 15 messages, 7 authors, 2011-02-08

RE: About bittiming calculation result

From: Tomoya MORINAGA <hidden>
Date: 2011-02-08 01:09:52
Also in: lkml

On Monday, February 07, 2011 9:01 PM, Wolfgang Grandegger wrote
Well, only prop_seg+phase_seg=tseg1 is relevant and the 
pch_can driver sets the allowed minimum "tseg1_min1" currently to 1:

static struct can_bittiming_const pch_can_bittiming_const = {
        .name = KBUILD_MODNAME,
        .tseg1_min = 1,
        .tseg1_max = 16,
        .tseg2_min = 1,
        .tseg2_max = 8,
        .sjw_max = 4,
        .brp_min = 1,
        .brp_max = 1024, /* 6bit + extended 4bit */
        .brp_inc = 1,
};
quoted
seg1/seg2/sjw/prop_seg must be more than 1 ?
Then "tseg1_min" should be set to *2*.
Though some drivers accepted by upstream have parameter "tseg1_min" as 1,
Sould we release the patch like below ?
 -         .tseg1_min = 1,
+         .tseg1_min = 2,

Thanks,
-----------------------------------------
Tomoya MORINAGA
OKI SEMICONDUCTOR CO., LTD.
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