Example device-tree-aware i2c gpio driver for Linux?

Question

Is there a good example device-tree-aware i2c gpio driver for Linux?

I've been looking at gpio-pcf857x but it has a header file containing struct pcf857x_platform_data which is used in board files.

I am looking for a similar example, but where the i2c id is defined-in/retrieved-from the device tree.

Have you checked other drivers there? gpio-pca953x supports it at least. ID is retrived via compatible strings as far as I know. — 0andriy
– 0andriy, Commented Apr 22, 2017 at 8:44
Take a look at max732x.c driver. Corresponding bindings documentation (for driver references you are looking for) is at Documentation/devicetree/bindings/gpio/. — Sam Protsenko
– Sam Protsenko, Commented Apr 22, 2017 at 11:03
@SamProtsenko I used the max732.c as a base and it worked well. Make your comment an answer and I'll accept it. — fadedbee
– fadedbee, Commented May 17, 2017 at 9:51

Community · Accepted Answer · 2017-05-23 10:31:11Z

1

Take a look at max732x.c driver (code). As for I2C ID table usage -- see this answer.

Corresponding bindings documentation (for driver references you are looking for) is at Documentation/devicetree/bindings/gpio/.

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answered May 17, 2017 at 10:19

Sam Protsenko

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1 Comment

Thanks for your answer.