i.MX ProcessorsのトピックRe: i2c communication in uboot

i2c communication in uboot

mathew_k_t — Mon, 01 Jun 2020 05:24:53 GMT

Hi,

I have an LCD module. I would like to initialize the LCD from uboot over i2c. I'm using imx6ull based custom board.

Are there any existing solutions available to do that?

If not, how I can get the i2c access in uboot?

Thanks in advance.

Re: i2c communication in uboot

igorpadykov — Mon, 01 Jun 2020 07:30:39 GMT

Hi mathew_k_t

i2c example can be found in pmic initialzation (function power_init_board())

in uboot-imx/tree/board/freescale/mx6ullevk/mx6ullevk.c

mx6ullevk.c\mx6ullevk\freescale\board - uboot-imx - i.MX U-Boot

Best regards
igor
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Re: i2c communication in uboot

mathew_k_t — Mon, 01 Jun 2020 10:21:10 GMT

Hi,

I have read about i2c commands in u-boot. Can I use that here?

Could you give me an example of "i2c write" command with -s(bulk of bytes)?