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

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Date:   Sat, 29 Oct 2016 14:15:24 +0200 (CEST)
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Eric Anholt <eric@...olt.net>
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

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