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Subject: Re: [PATCH v3 2/4] leds: simatic-ipc-leds: add new driver for Siemens
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To:     Henning Schild <henning.schild@siemens.com>,
        Andy Shevchenko <andy.shevchenko@gmail.com>
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From:   "Enrico Weigelt, metux IT consult" <lkml@metux.net>
Message-ID: <c268618b-27f5-5f1d-a3d2-d94e785df0cb@metux.net>
Date:   Wed, 5 May 2021 16:58:31 +0200
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On 12.04.21 13:56, Henning Schild wrote:

> Enrico, does "gpio_amd_fch" show up under /sys/class/gpio as a
> gpiochip? Or how to interact with that driver before basing another one
> on top?

It's not probed on its own, but explicitly by a board specific driver,
as it needs board specific data.

See drivers/platform/x86/pcengines-apuv2.c


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287