linux-kernel - Re: [PATCH v3] ARM: bcm2835: Add names for the Raspberry Pi GPIO lines

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Date:   Mon, 31 Oct 2016 10:53:15 -0700
From:   Eric Anholt <eric@...olt.net>
To:     Stefan Wahren <stefan.wahren@...e.com>
Cc:     Lee Jones <lee@...nel.org>, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, swarren@...dotorg.org,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v3] ARM: bcm2835: Add names for the Raspberry Pi GPIO lines

Stefan Wahren <stefan.wahren@...e.com> writes:

> Hi Eric,
>
>> Eric Anholt <eric@...olt.net> hat am 27. Oktober 2016 um 18:52 geschrieben:
>> 
>> 
>> From: Linus Walleij <linus.walleij@...aro.org>
>> 
>> The idea is to give useful names to GPIO lines that an implementer
>> will be using from userspace, e.g. for maker type projects.  These are
>> user-visible using tools/gpio/lsgpio.c
>
> sorry for the late feedback, but did you check your patch against the Firmware
> DTS [1]?
>
> As an example the GPIO38 is connected and named as USB_LIMIT_1A2 since Raspberry
> Pi 1 B Plus.
>
> [1] -
> https://github.com/raspberrypi/documentation/blob/master/configuration/images/dt-blob.dts

I did use the dt-blob sometimes for cross-checking, but these are
written against the schematics, not the dt-blob.  If you've got things
you'd like changed, could you send a patch?

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