i.MX ProcessorsのトピックRe: How to enable Flexcan1 on iMX6Q Sabre-AI using U-Boot

How to enable Flexcan1 on iMX6Q Sabre-AI using U-Boot

usuda — Fri, 14 Dec 2018 05:56:03 GMT

Hi,

I want to know how to enable Flexcan1 on iMX6Q Sabre AI board using U-Boot.

Because I want to execute some simple program from U-Boot.

I think it seems possible with i2c command.

But I don't know the details.

Re: How to enable Flexcan1 on iMX6Q Sabre-AI using U-Boot

igorpadykov — Fri, 14 Dec 2018 23:17:18 GMT

Hi Hisashi

unfortunately flexcan is not supported in nxp uboot releases, one can try to

port it using linux driver, documentation can be found on

i.MX Software|NXP

or post this to uboot mail list

lists.denx.de Mailing Lists

Best regards
igor
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Re: How to enable Flexcan1 on iMX6Q Sabre-AI using U-Boot

usuda — Wed, 19 Dec 2018 04:03:42 GMT

Hi igor,

Thank you for your reply.

I can enable flexcan1 by using the following U-Boot commands.

=> i2c dev 2

Setting bus to 2

=> i2c mm 32 0

00000000: 11 ? 0

00000001: 00 ? ef

00000002: f0 ? 0

00000003: ff ? 0

00000004: 01 ? ac

00000005: 00 ? ?

- read input_port_reg(0x00)

- set output_port_reg(0x01) to 0xef

- set polarity_reg(0x02) to 0x00

- set config_reg(0x03) to 0x00

- set timeout_reg(0x04) to 0xac

Best regards,

Hisashi USUDA