Commit e3409e41 authored Nov 24, 2020 by Marc Kleine-Budde

can: m_can: fix nominal bitiming tseg2 min for version >= 3.1



At lest the revision 3.3.0 of the bosch m_can IP core specifies that valid
register values for "Nominal Time segment after sample point (NTSEG2)" are from
1 to 127. As the hardware uses a value of one more than the programmed value,
mean tseg2_min is 2.

This patch fixes the tseg2_min value accordingly.

Cc: Dan Murphy <dmurphy@ti.com>
Cc: Mario Huettel <mario.huettel@gmx.net>
Acked-by: Sriram Dash <sriram.dash@samsung.com>
Link: https://lore.kernel.org/r/20201124190751.3972238-1-mkl@pengutronix.de


Fixes: b03cfc5b ("can: m_can: Enable M_CAN version dependent initialization")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

parent 865f5b67

drivers/net/can/m_can/m_can.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1033,7 +1033,7 @@ static const struct can_bittiming_const m_can_bittiming_const_31X = {
		.name = KBUILD_MODNAME,
		.tseg1_min = 2, /* Time segment 1 = prop_seg + phase_seg1 */
		.tseg1_max = 256,
		.tseg2_min = 1, /* Time segment 2 = phase_seg2 */
		.tseg2_min = 2, /* Time segment 2 = phase_seg2 */
		.tseg2_max = 128,
		.sjw_max = 128,
		.brp_min = 1,

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