linux-kernel - Re: [PATCH v2 3/7] includes: dt-bindings: Rename STM32F429 pinctrl DT bindings

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Date:   Wed, 12 Apr 2017 15:31:01 +0200
From:   Alexandre Torgue <alexandre.torgue@...com>
To:     Rob Herring <robh@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Olof Johansson <olof@...om.net>, <lee.jones@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/7] includes: dt-bindings: Rename STM32F429 pinctrl DT
 bindings

Hi Rob,

On 04/10/2017 10:27 PM, Rob Herring wrote:
> On Fri, Apr 07, 2017 at 02:43:00PM +0200, Alexandre TORGUE wrote:
>> STM32F4 MCU series is composed of several SOC (STM32F429, STM32F469, ...).
>> Most of muxing definition are identical. So to avoid to duplicate bindings
>> definition, this patch create common definitions.
>
> This is a lot of churn. Some confirmation that the resultant dtb is the
> same before and after would be nice. Perhaps the script you used to
> convert this as well.

I tried to use fdtdump but it seems bugged. So I used directly dtc 
binary to (re)generate dts files (before and after apply the series) and 
I compared "pinmux" field in both case.

Example on stm32f469-disco:

./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-after.dts 
stm32f469-disco-after.dtb

./scripts/dtc/dtc -I dtb -O dts -o stm32f469-disco-before.dts 
stm32f469-disco-before.dtb

cat stm32f469-disco-after.dts | grep pinmux
cat stm32f469-disco-before.dts | grep pinmux

regards
alex

>
> Rob
>