linux-kernel - Re: [PATCH v3 1/5] dt-bindings: gpio: Add a binding header for the MSC313 GPIO driver

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Date:   Wed, 11 Nov 2020 14:28:47 -0600
From:   Rob Herring <robh@...nel.org>
To:     Daniel Palmer <daniel@...f.com>
Cc:     maz@...nel.org, linux-kernel@...r.kernel.org,
        linus.walleij@...aro.org, soc@...nel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        w@....eu, linux-gpio@...r.kernel.org
Subject: Re: [PATCH v3 1/5] dt-bindings: gpio: Add a binding header for the
 MSC313 GPIO driver

On Mon, 09 Nov 2020 21:17:27 +0900, Daniel Palmer wrote:
> Header adds defines for the gpio number of each pad from the driver view.
> 
> The gpio block seems to have enough registers for 128 lines but what line
> is mapped to a physical pin depends on the chip. The gpio block also seems
> to contain some registers that are not related to gpio but needed somewhere
> to go.
> 
> Because of the above the driver itself uses the index of a pin's offset in
> an array of the possible offsets for a chip as the gpio number.
> 
> Signed-off-by: Daniel Palmer <daniel@...f.com>
> ---
>  MAINTAINERS                            |  1 +
>  include/dt-bindings/gpio/msc313-gpio.h | 53 ++++++++++++++++++++++++++
>  2 files changed, 54 insertions(+)
>  create mode 100644 include/dt-bindings/gpio/msc313-gpio.h
> 

Reviewed-by: Rob Herring <robh@...nel.org>