Re: [PATCH v4 2/2] fpga: Add support for Lattice iCE40 FPGAs

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Hi Rob,

Thanks for taking the time review the patches.

 .../bindings/fpga/lattice-ice40-fpga-mgr.txt       |  23 +++

It's preferred that bindings are a separate patch.

Can you just clarify a little? I'm happy to split the patch up, but I don't understand how it could work without the bindings. For example, in ice40_fpga_probe, I have to get the GPIOs with devm_gpiod_get for the driver to work.

Maybe I'm missing something. Or do you just mean the documentation?



-gpios is preferred.

Please state direction and polarity.

Thanks, I'll fix that up.


+- creset_b-gpio:	GPIO connected to CRESET_B pin. Note that CRESET_B is

Don't use '_'. In this case, I'd just do cresetb-gpios.

So the pin is called CRESET_B in the datasheet. I think the _B refers to the active-low polarity of the line.

So I would think it should be creset-b-gpios or creset-gpios. I'm not so convinced cresetb-gpios is ideal, but it's a minor point.


+			treated as an active-low output because the signal is
+			treated as an enable signal, rather than a reset. This

Though for enable signals, enable-gpios is fairly standard even if that
deviates from the pin name.

I would think that would just confuse the user, unless they dig out the binding docs. The FPGA doesn't have an enable pin, and it's not at all obvious that a "reset" pin means "enable" in this driver.

Again, if you're adamant this is the correct convention it's no problem to make the change - just seems weird to me. What do you think?


Thanks
Joel
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