linux-kernel - Re: [PATCH v2 4/4] gpio: dt-bindings: Update documentation with ast2600 controllers

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Message-Id: <3f9d48eb-79ed-42e9-a346-761871e74c98@www.fastmail.com>
Date:   Thu, 05 Sep 2019 13:29:29 +0930
From:   "Andrew Jeffery" <andrew@...id.au>
To:     "Rashmica Gupta" <rashmica.g@...il.com>,
        "Linus Walleij" <linus.walleij@...aro.org>
Cc:     "Bartosz Golaszewski" <bgolaszewski@...libre.com>,
        "Rob Herring" <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        "Joel Stanley" <joel@....id.au>, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] gpio: dt-bindings: Update documentation with ast2600 controllers



On Thu, 5 Sep 2019, at 10:48, Rashmica Gupta wrote:
> The ast2600 is a new generation of SoC from ASPEED. Similarly to the
> ast2400 and ast2500, it has a GPIO controller for it's 3.6V GPIO pins.
> Additionally, it has a GPIO controller for 36 1.8V GPIO pins. These
> voltages are fixed and cannot be configured via pinconf, so we have two
> separate drivers for them.

See 3/4 for discussion about the commit message.

> 
> Signed-off-by: Rashmica Gupta <rashmica.g@...il.com>
> ---
>  Documentation/devicetree/bindings/gpio/gpio-aspeed.txt | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt 
> b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
> index 7e9b586770b0..cd388797e07c 100644
> --- a/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
> +++ b/Documentation/devicetree/bindings/gpio/gpio-aspeed.txt
> @@ -2,7 +2,8 @@ Aspeed GPIO controller Device Tree Bindings
>  -------------------------------------------
>  
>  Required properties:
> -- compatible		: Either "aspeed,ast2400-gpio" or "aspeed,ast2500-gpio"
> +- compatible		: Either "aspeed,ast2400-gpio", "aspeed,ast2500-gpio",
> +					  "aspeed,ast2600-gpio", or "aspeed,ast2600-1-8v-gpio"

See the discussion on patch 3/4 about how we might eliminate the
aspeed,ast2600-1-8v-gpio compatible string.

Also, this patch should be the first in the series and start the subject with
"dt-bindings: gpio: aspeed: ..."

Cheers,

Andrew