Commit 946c4135 authored by Gerhard Uttenthaler's avatar Gerhard Uttenthaler Committed by Marc Kleine-Budde
Browse files

can: ems_pci: Deassert hardware reset 



The reset line from the Asix chip to the SJA1000 is asserted after boot up
until it is deasserted by a register write

Signed-off-by: default avatarGerhard Uttenthaler <uttenthaler@ems-wuensche.com>
Link: https://lore.kernel.org/all/20230120112616.6071-8-uttenthaler@ems-wuensche.com


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 8b4339f7

drivers/net/can/sja1000/ems_pci.c

+8 −0
Original line number Diff line number Diff line
@@ -326,6 +326,14 @@ static int ems_pci_add_card(struct pci_dev *pdev, 
		}

	}



	if (card->version == 3) {

		/* ASIX chip asserts local reset to CAN controllers

		 * after bootup until it is deasserted

		 */

		writel(readl(card->conf_addr + ASIX_LIEMR) & ~ASIX_LIEMR_LRST,

		       card->conf_addr + ASIX_LIEMR);

	}



	ems_pci_card_reset(card);



	/* Detect available channels */