linux-kernel - Re: [PATCH 4/5] pwm: tegra: Add DT node compatible for Tegra186

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Date:	Wed, 22 Jun 2016 14:46:14 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Rob Herring <robh+dt@...nel.org>
Cc:	Laxman Dewangan <ldewangan@...dia.com>, swarren@...dotorg.org,
	gnurou@...il.com, linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] pwm: tegra: Add DT node compatible for Tegra186

On Wed, Jun 22, 2016 at 05:17:22PM +0530, Laxman Dewangan wrote:
> Tegra186 has 8 different PWM controller and each controller has only
> one output. Earlier generation SoCs have the 4 PWM output per controller.
> 
> Add DT node compatible for Tegra186.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@...dia.com>
> ---
>  Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
> index c52f03b..2851b2d 100644
> --- a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
> +++ b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
> @@ -1,10 +1,12 @@
>  Tegra SoC PWFM controller
>  
>  Required properties:
> -- compatible: For Tegra20, must contain "nvidia,tegra20-pwm".  For Tegra30,
> -  must contain "nvidia,tegra30-pwm".  Otherwise, must contain
> -  "nvidia,<chip>-pwm", plus one of the above, where <chip> is tegra114,
> -  tegra124, tegra132, or tegra210.
> +- compatible: For Tegra20, must contain "nvidia,tegra20-pwm".
> +	      For Tegra30, must contain "nvidia,tegra30-pwm".
> +	      For Tegra114, Tegra124, Tegra132, Tegra210 must contain
> +	      "nvidia,<chip>-pwm", plus one of the above, where <chip> is
> +	      tegra114, tegra124, tegra132, or tegra210.
> +	      For Tegra186, must contain "nvidia,tegra186-pwm".

Rob, I recall discussing this with you a couple of weeks ago, but fail
to remember the outcome and can't find a link to the discussion either.
Wasn't there a new standard way of documenting this kind of compatible
string list?

Or did you say it didn't matter much until we moved to a YAML-based
description?

Thierry

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