linux-kernel - Re: [PATCH 2/3] dt-bindings: gpio: Add binding document for xylon logicvc-gpio

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Message-ID: <CACRpkdYrTCnrW6-28+RhdMZ4cB5VcqG6T-5aABvvEgiZ3iri2Q@mail.gmail.com>
Date:   Thu, 12 Sep 2019 10:19:42 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH 2/3] dt-bindings: gpio: Add binding document for xylon logicvc-gpio

On Tue, Sep 10, 2019 at 4:29 PM Paul Kocialkowski
<paul.kocialkowski@...tlin.com> wrote:

> The Xylon LogiCVC display controller exports some GPIOs, which are
> exposed as a dedicated driver.
>
> This introduces the associated device-tree bindings documentation.
>
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
(...)
> +The controller exposes GPIOs from the display and power control registers,
> +which are mapped by the driver as follows:
> +- GPIO[4:0] (display control) mapped to index 0-4
> +- EN_BLIGHT (power control) mapped to index 5
> +- EN_VDD (power control) mapped to index 6
> +- EN_VEE (power control) mapped to index 7
> +- V_EN (power control) mapped to index 8

This should be reflected in the gpio-line-names in the example
and in your device trees.

Yours,
Linus Walleij