linux-kernel - Re: [PATCH v4] ARM: dts: stm32: change pinctrl bindings definition

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Date:   Mon, 11 Sep 2017 16:07:21 -0500
From:   Rob Herring <robh@...nel.org>
To:     Alexandre Torgue <alexandre.torgue@...com>
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>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, vikas.manocha@...com,
        Benjamin Gaignard <benjamin.gaignard@...aro.org>
Subject: Re: [PATCH v4] ARM: dts: stm32: change pinctrl bindings definition

On Wed, Aug 30, 2017 at 04:50:53PM +0200, Alexandre Torgue wrote:
> Initially each pin was declared in "include/dt-bindings/stm32<SOC>-pinfunc.h"
> and each definition contained SOC names (ex: STM32F429_PA9_FUNC_USART1_TX).
> Since this approach was approved, the number of supported MCU has
> increased (STM32F429/STM32F469/STM32f746/STM32H743). To avoid to add a new
> file in "include/dt-bindings" each time a new STM32 SOC arrives I propose
> a new approach which consist to use a macro to define pin muxing in device
> tree. All STM32 will use the common macro to define pinmux. Furthermore, it
> will make STM32 maintenance and integration of new SOC easier .
> 
> Signed-off-by: Alexandre TORGUE <alexandre.torgue@...com>
> Reviewed-by: Vikas MANOCHA <vikas.manocha@...com>
> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@...aro.org>
> Acked-by: Linus Walleij <linus.walleij@...aro.org>

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