Re: [PATCH v4 2/3] dt-bindings: net: bluetooth: Add qualcomm-bluetooth

[Marcel Holtmann]

Hi Bjoern,

>>> +		bt-disable-n-gpios = <&pm8994_gpios 19 GPIO_ACTIVE_HIGH>;
>> 
>> can we use a common name here. I think that Nokia and Broadcom drivers
>> define one. And if this is the enable/shutdown GPIO, we should name it
>> consistently across all manufacturers. It essentially does the same on
>> Bluetooth UART chips no matter what chip is behind them.
>> 
> 
> Broadcomm has a device-wakup-gpios and Nokia has bluetooth-wakup-gpios.
> It might be that these behave in the same way, but from the description
> they only trigger the wakeup.

that is something that we might need to start fixing. I really prefer if we name the GPIOs a bit more consistent.

> The reason for the proposed naming here is that the pin is named
> "BT_DISABLE_N" in the datasheet.

That is not a reason I buy. So the next board comes around that labels it in the data sheet BT_DISABLE_YEAH_SUPER_GREAT and you send me a patch to the driver to look for that name. If the GPIO does the same thing, I couldnât care less what the data sheet says. That might be a comment in the DT file, but it should not pollute the driver code.

A new board should not require driver changes, you just ship a new DT for that board and an existing driver hopefully just does the job. No matter how someone named a GPIO in a piece of paper.

Regards

Marcel